Eaton CL-6 series control Instructions

Below you will find brief information for Voltage regulator control CL-6 series. The CL-6 control provides a user-friendly interface for programming, metering, and data retrieval, as well as the capability to interface with SCADA systems. It also offers a variety of advanced features, including Metering-PLUS, programmable inputs and outputs, and a Compact Flash card for data logging.

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Voltage Regulators

MN225016EN

Effective January 2016

Supersedes S225-11-1 July 2013

COOPER POWER

SERIES

CL-6 series control installation, operation, and maintenance instructions

DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY

The information, recommendations, descriptions and safety notations in this document are based on Eaton Corporation’s

(“Eaton”) experience and judgment and may not cover all contingencies. If further information is required, an Eaton sales office should be consulted. Sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other contractual agreement between Eaton and the purchaser.

THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES

OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY

EXISTING CONTRACT BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON. THE

CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES.

In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or otherwise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the information, recommendations and descriptions contained herein. The information contained in this manual is subject to change without notice. ii CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

SAFETY INFORMATION

Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Hazard statement definitions . . . . . . . . . . . . . . . . . iv

PRODUCT INFORMATION

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Acceptance and initial inspection . . . . . . . . . . . . . . 1

Handling and storage . . . . . . . . . . . . . . . . . . . . . . . . 1

Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Quality standards. . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SECTION 1: CONTROL PANEL

Lower panel (grey) . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Control function switch . . . . . . . . . . . . . . . . . . . . . 3

Manual raise lower switch . . . . . . . . . . . . . . . . . . 3

Supervisory switch . . . . . . . . . . . . . . . . . . . . . . . . 3

Drag-hand reset switch . . . . . . . . . . . . . . . . . . . . 3

Neutral light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Voltmeter terminals . . . . . . . . . . . . . . . . . . . . . . . . 3

Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

External source terminals . . . . . . . . . . . . . . . . . . . 3

Connecting power to external source terminals . . . 4

240 Vac applications to Eaton 240 V control . . . . . 4

240 Vac applications to Eaton 120 V control . . . . . 6

120 Vac applications to Eaton 120 V control . . . . . 8

Upper panel (black) . . . . . . . . . . . . . . . . . . . . . . . . 10

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Alarm indicators . . . . . . . . . . . . . . . . . . . . . . . . . 12

Communications . . . . . . . . . . . . . . . . . . . . . . . . . 12

Status indicators . . . . . . . . . . . . . . . . . . . . . . . . . 12

Flash card port . . . . . . . . . . . . . . . . . . . . . . . . . . 12

SECTION 2: CONTROL INSTALLATION

Mounting the control . . . . . . . . . . . . . . . . . . . . . . . 13

Placing the control into service . . . . . . . . . . . . . . . 13

Setting the control for service . . . . . . . . . . . . . . 13

Operational check . . . . . . . . . . . . . . . . . . . . . . . . . 14

Pre-Installation check . . . . . . . . . . . . . . . . . . . . . 14

In-service check . . . . . . . . . . . . . . . . . . . . . . . . . 14

Control bench testing . . . . . . . . . . . . . . . . . . . . . 14

Field calibration check . . . . . . . . . . . . . . . . . . . . . . 15

Removal from service . . . . . . . . . . . . . . . . . . . . . . 15

Determining neutral position . . . . . . . . . . . . . . . . 15

Return the regulator to neutral . . . . . . . . . . . . . . 16

Removing the control . . . . . . . . . . . . . . . . . . . . . . 16

Replacing the control . . . . . . . . . . . . . . . . . . . . . . . 17

SECTION 3: INITIAL CONTROL PROGRAMMING

Basic programming . . . . . . . . . . . . . . . . . . . . . . . . 18

Programming and reconfiguring for different voltage systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Allowable system voltages and calculation of overall

PT ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Determination of leading or lagging in deltaconnected regulators . . . . . . . . . . . . . . . . . . . . . 23

SECTION 4: CONTROL OPERATION

Automatic operation . . . . . . . . . . . . . . . . . . . . . . . 24

Manual operation . . . . . . . . . . . . . . . . . . . . . . . . . 24

Self-diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Security system . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Basic control operations . . . . . . . . . . . . . . . . . . . . 26

Set voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Time delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Line compensation, resistance and reactance settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Regulator configuration . . . . . . . . . . . . . . . . . . . . 26

Control operating modes . . . . . . . . . . . . . . . . . . 26

System line voltage . . . . . . . . . . . . . . . . . . . . . . . 27

Potential transformer ratio . . . . . . . . . . . . . . . . . 27

Current transformer primary tating . . . . . . . . . . . 27

Delta-connected (line-to-line connected) regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SECTION 5: CONTROL PROGRAMMING

Quik-Start setup . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Function menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Function codes . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Special functions . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Power-UP/Reset conditions . . . . . . . . . . . . . . . . . . 73

Indication messages . . . . . . . . . . . . . . . . . . . . . . . 74

Metering-PLUS formats . . . . . . . . . . . . . . . . . . . . . 76

Load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

SECTION 6: CONTROL FEATURES

Calendar/clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 iii

SAFETY

FOR LIFE

Safety for life

SAFETY

FOR LIFE

Eaton meets or exceeds all applicable industry standards relating to product safety in its Cooper Power™ series products.

We actively promote safe practices in the use and maintenance of our products through our service literature, instructional training programs, and the continuous efforts of all Eaton employees involved in product design, manufacture, marketing, and service.

We strongly urge that you always follow all locally approved safety procedures and safety instructions when working around high voltage lines and equipment, and support our “Safety For Life” mission.

Safety information

The instructions in this manual are not intended as a substitute for proper training or adequate experience in the safe operation of the equipment described. Only competent technicians who are familiar with this equipment should install, operate, and service it.

A competent technician has these qualifications:

• Is thoroughly familiar with these instructions.

• Is trained in industry-accepted high and low-voltage safe operating practices and procedures.

• Is trained and authorized to energize, de-energize, clear, and ground power distribution equipment.

• Is trained in the care and use of protective equipment such as arc flash clothing, safety glasses, face shield, hard hat, rubber gloves, clampstick, hotstick, etc.

Following is important safety information. For safe installation and operation of this equipment, be sure to read and understand all cautions and warnings.

Safety instructions

Following are general caution and warning statements that apply to this equipment. Additional statements, related to specific tasks and procedures, are located throughout the manual.

DANGER

Hazardous voltage. Contact with hazardous voltage will cause death or severe personal injury. Follow all locally approved safety procedures when working around high- and low-voltage lines and equipment.

G103.3

WARNING

Before installing, operating, maintaining, or testing this equipment, carefully read and understand the contents of this manual. Improper operation, handling or maintenance can result in death, severe personal injury, and equipment damage.

G101.0

Hazard Statement Definitions

This manual may contain four types of hazard statements:

DANGER

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

This equipment is not intended to protect human life. Follow all locally approved procedures and safety practices when installing or operating this equipment.

Failure to comply can result in death, severe personal injury and equipment damage.

G102.1

WARNING

Indicates a potentially hazardous situation which, if not avoided, could result In death or serious injury.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage only.

WARNING

Power distribution and transmission equipment must be properly selected for the intended application. It must be installed and serviced by competent personnel who have been trained and understand proper safety procedures. These instructions are written for such personnel and are not a substitute for adequate training and experience in safety procedures. Failure to properly select, install or maintain power distribution and transmission equipment can result in death, severe personal injury, and equipment damage.

G122.3

iv CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Instantaneous metering . . . . . . . . . . . . . . . . . . . 77

Demand metering . . . . . . . . . . . . . . . . . . . . . . . . 77

Demand Task operation . . . . . . . . . . . . . . . . . . . . 77

Tap Position indication . . . . . . . . . . . . . . . . . . . . . . 78

Source-Side voltage . . . . . . . . . . . . . . . . . . . . . . . . 78

Differential voltage . . . . . . . . . . . . . . . . . . . . . . . 78

External source voltage . . . . . . . . . . . . . . . . . . . . 78

Source-side voltage calculation . . . . . . . . . . . . . . 78

Reverse power operation . . . . . . . . . . . . . . . . . . . 79

Locked forward mode . . . . . . . . . . . . . . . . . . . . . 79

Locked reverse mode . . . . . . . . . . . . . . . . . . . . . 79

Reverse idle ,ode . . . . . . . . . . . . . . . . . . . . . . . . 80

Bi-directional mode . . . . . . . . . . . . . . . . . . . . . . 81

Neutral idle mode . . . . . . . . . . . . . . . . . . . . . . . . 81

Cogeneration mode . . . . . . . . . . . . . . . . . . . . . . 82

Reactive bi-directional mode . . . . . . . . . . . . . . . 83

Voltage limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Voltage reduction . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Local/digital remote mode . . . . . . . . . . . . . . . . . 84

Soft ADD-AMP feature . . . . . . . . . . . . . . . . . . . . . 84

Supervisory control and data acquisition (SCADA) 84

Data retrieval and settings uploading . . . . . . . . . 84

Digital SCADA . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Analog SCADA . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Remote motor control and auto inhibit . . . . . . . . 87

Alternate configuration . . . . . . . . . . . . . . . . . . . . . 87

Transducer connections . . . . . . . . . . . . . . . . . . . . . 88

Fooler Voltage Scheme . . . . . . . . . . . . . . . . . . . . . 88

SECTION 7: ADVANCED CONTROL FEATURES

Metering-PLUS feature . . . . . . . . . . . . . . . . . . . . . 89

Compensated voltage . . . . . . . . . . . . . . . . . . . . . 89

Load voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Tap position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Compact flash card . . . . . . . . . . . . . . . . . . . . . . . . 92

Flash card functions . . . . . . . . . . . . . . . . . . . . . . 93

Communications . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Communication ports . . . . . . . . . . . . . . . . . . . . . 95

Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Programmable input and output . . . . . . . . . . . . . . 95

Inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . 96

Discrete inputs and outputs (Auxiliary I/O) . . . . . 97

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Profiling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Histograms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

TIME-ON-TAP feature . . . . . . . . . . . . . . . . . . . . . 100

Preventive maintenance tapping . . . . . . . . . . . . . 100

PMT Mode A . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

PMT Mode B . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Duty Cycle Monitor . . . . . . . . . . . . . . . . . . . . . . . .101

Leader/Follower scheme . . . . . . . . . . . . . . . . . . . .101

SECTION 8: TROUBLESHOOTING

External check . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Defining the problem . . . . . . . . . . . . . . . . . . . . . . 102

Control panel troubleshooting . . . . . . . . . . . . . . . 102

No power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Self-diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . 102

Diagnostic error messages . . . . . . . . . . . . . . . 107

Indication messages when using edit key . . . . 103

Tap-changer operation troubleshooting . . . . . . . . 104

Metering troubleshooting . . . . . . . . . . . . . . . . . . 106

Control calibration . . . . . . . . . . . . . . . . . . . . . . . . 106

Voltage calibration . . . . . . . . . . . . . . . . . . . . . . . 106

Current calibration . . . . . . . . . . . . . . . . . . . . . . . 107

SECTION 9: CONTROL ACCESSORIES

Communications . . . . . . . . . . . . . . . . . . . . . . . . . 108

Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Heater assembly . . . . . . . . . . . . . . . . . . . . . . . . . 108

SECTION 10: APPENDIX

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 v

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vi CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Product information

Introduction

This document describes the operation, and maintenance instructions for Eaton's Cooper Power™ series CL-6 series control for voltage regulators. Refer to Service Information

MN225008EN VR-32 Voltage Regulator with Quik-Drive™

Tap-Changer Installation, Operation, and Maintenance

Instructions for installation and operation information on

Eaton's Cooper Power series voltage regulator.

Read this manual first

Read and understand the contents of this manual and follow all locally approved procedures and safety practices before installing or operating this equipment. Read and understand the manual detailing the installation and operation of the regulator used with this control.

Additional information

These instructions cannot cover all details or vari ations in the equipment, procedures, or processes described nor provide directions for meeting every possible contin gency during installation, operation, or maintenance. For additional information, please contact your Eaton representative.

Acceptance and initial inspection

This product is completely assembled, tested, and inspected at the factory. It is carefully calibrated, adjusted, and in good condition when accepted by the carrier for shipment.

Upon receipt, inspect the carton for signs of damage.

Unpack the control and inspect it thoroughly for damage incurred during shipment. If damage is discovered, file a claim with the carrier immediately.

Handling and storage

Be careful during handling and storage of equipment to minimize the possibility of damage.

Standards

Eaton's regulators are designed and tested in accordance with the following standards:

IEEE Std. C37.90.1

™ -2012 Standard

IEEE Std. C37.90.2

™ -2004 Standard

IEEE Std. C57.13

™ -2008 Standard

IEEE Std. C57.15

™ -2009 Standard

IEEE Std. C57.91

™ -2011 Standard

IEEE Std. C57.131

™ -2012 Standard

Quality standards

ISO 9001 Certified Quality Management System.

Description

The reliable CL-6 control from Eaton incorporates the latest in digital technology to provide accurate, rapid, and dependable control of a step-voltage regulator. Utilizing surface-mount technology and low-power electronics, the

CL-6 control is CE (Commonwealth Europe) compliant. The nameplate located on the control box defines the power circuit.

The CL-6 control allows keypad programming, Metering-

PLUS™ status inquiries, flashcard uploading and downloading, and multiple communication ports with user-selectable DNP3 or 2179 protocol. LED indicators provide instant information on alarm, communications, and regulation condition status. A four-line display provides more detailed information and further simplifies programming.

In addition, the CL-6 control is highly configurable and ready for use in applications where either digital or analog supervisory control and data acquisition (SCADA) is required.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 1

4 X 20 Character

Liquid Crystal

Display

Alarm Indicators

Status Indicators

Communications

Indicators,

Coms Tx and Rx

LEDs

DB9-Style RS-232 Port

Control Function

Switch:

Auto/

Remote-Off-Manual

Flash Card Port and LED

Multi-Use Keypad:

Numeric Keys,

Function Keys,

Short-Cut Keys

Redundant Neutral-

Indicating Light

(LED)

Power Switch:

Internal,

Off,External

Manual Raise/Lower

Switch

Supervisory On/Off

Switch

Drag-Hand

Reset Switch

Motor

Fuse

External Source

Terminals with

Ground

Voltmeter

Terminals

Figure 1-1. Control panel layout.

2 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Section 1: Control panel

Lower panel (grey)

The lower section of the control contains components which are similar to other controls in Eaton's Cooper Power series CL line of controls. Refer to Figure 1-1.

Power switch

In the external position, the control and tap-changer motor are powered from an external source connected to the external source terminals (120 Vac standard, 240 Vac as indicated by decal). In the internal position, the control and motor are powered from the regulator. In the off position, no power is delivered to either the control or the motor.

Control function switch

In the auto/remote position, the tap-changer motor can be controlled by either the front panel (auto) or remotely by

SCADA. In the off position, manual and automatic operation and remote motor control are inhibited. In the manual position, automatic operation and remote motor control are inhibited and the tap-changer may be raised or lowered locally by momentarily toggling the raise/lower switch.

Manual (raise/lower) switch

This switch allows the operator to manually raise or lower the tap-changer motor when the control switch is set to

Manual.

Supervisory switch

This switch is used for digital communications only. When set to On, SCADA has full capabilities. When set to Off,

SCADA may only read the control database.

Drag-hand reset switch

This switch operates a solenoid in the position indicator to move the drag hands to the present tap position.

Neutral light

This is the primary indication that the tap-changer is in the neutral position. See the Control Installation: Determining

Neutral Position section of this manual.

Voltmeter terminals

These allow the connection of a voltmeter to measure the potential sensed by the control [between the load (L) bushing and the source load (SL) bushing of the regulator]. There are two terminals: a red terminal and a white terminal.

Fuse

The motor fuse is a 125 V, 6 A, fast-blow fuse.

External source terminals

CAUTION

Equipment damage. Be mindful of polarity when using an external source. Polarity reversal will result in control damage.

Providing 120 Vac to these terminals powers the control and tap-changer motor. Controls wired for an external source of

220–240 Vac have a decal specifying “240” at the terminals.

Caution should be taken when connecting external voltage to the terminal(s). The voltage should be checked to insure the polarity is correct. The black terminal is the hot terminal, the white is the neutral terminal, and the green, which is directly connected to the chassis, is the external supply ground.

CAUTION

Equipment damage. Only an ac power supply is to be used to energize the control externally. Do not use a dc-to-ac voltage inverter. Failure to comply can cause excessive harmonics to be generated and result in damage to the front panel.

The CL series control can be powered externally through the front ‘external power’ binding posts. The control panel itself utilizes 120 Vac to operate. However, there are optional configurations in which a 240 Vac control cabinet is supplied. Whichever the case, care must be taken when applying an external source to the control.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 3

Connecting power to external source terminals

240 Vac applications to Eaton 240 V control

Option 1:

Control Box Assembly/Panel connected to earth ground to provide protection to operations personnel (typical field application where control is mounted on grounded

Regulator tank or dropped down pole with control box grounded properly).

The 240 Vac Eaton control cabinet utilizes a 240 Vac to

120 Vac (2:1) auto transformer inside the control cabinet

(on the back panel). This transformer steps down the

240 Vac external supply to provide 120 Vac to the control panel. Inside the CL-6 control, the neutral and ground are connected in several locations. Care should be taken when applying external power.

The 240 Vac external source must be completely isolated.

In most cases an isolation transformer is needed. This isolation transformer must isolate both the neutral and line on the secondary side. Also, the neutral and ground on the secondary side should not be bonded or connected.

To check isolation from earth ground, check the continuity of each lead on the isolation transformer with respect to ground (G). Check this before connecting the leads to the control panel. See Figure 1-2.

The control panel assembly is grounded through the tank or a separate grounding strap. Earth ground of the isolation transformer is not connected to the control. The only source of earth ground reference on secondary of isolation transformer is through the control box connection to ground.

Option 2:

Control Box Assembly floating (typical shop or lab application where control is mounted on ungrounded regulator tank or sitting on workbench).

Eaton offers an optional control configuration that accepts

240 Vac external power. In this configuration, a 240 Vac to

120 Vac (2:1) auto transformer is installed inside the control cabinet (on the back panel). This transformer steps down the 240 Vac external supply to provide 120 Vac to the control panel. Inside the CL-6 control, the neutral and ground are connected in several locations.

The 240 Vac external source must be completely isolated.

In this case, the ground of the isolation transformer is connected to the green terminal post on the CL-6 series control. In this configuration, the only source of earth ground reference on the secondary side of the isolation transformer is through the control box connection to the isolation transformer ground.

4 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

1:1 Isolation

Transformer

CL-6 Panel

240V

Core may or may not be tied to Earth

Earth Ground not carried to panel.

To assure isolation from Earth Ground check continuity of each of the leads of the isolation transformer to G before connecting leads to control panel.

Figure 1-2. 240 Vac application with Eaton 240 V control - Option 1.

Eaton supplied 2:1 Auto

Transformer on Control

Cabinet Back Panel

Neutral connected to ground at panel to shunt HV to LV faults/ leakage to Earth

Ground. Can't be removed.

240V External

Source

TB2-7

240V-L

120V-L

TB2-8

Common-N

TB2-5, 6 G

CL-6 Panel

240V

1:1 Isolation

Transformer

240V

Eaton supplied 2:1 Auto

Transformer on Control

Cabinet Back Panel

Neutral connected to ground at panel to shunt HV to LV faults/ leakage to Earth

Ground. Can't be removed.

240V External

Source

TB2-7

240V-L

120V-L

TB2-8

Common-N

TB2-5, 6 G

N N

Core may or may not be tied to Earth

To assure isolation from

Earth Ground check continuity of each of the leads of the isolation transformer to

G before connecting leads to control panel.

Figure 1-3. 240 Vac application with Eaton 240 V control - Option 2.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 5

240 Vac applications to Eaton 120 V control

Option 1:

Control Box Assembly/Panel connected to earth ground to provided protection to operations personnel (typical field application where control is mounted on grounded

Regulator tank or dropped down pole with control box grounded properly).

Since the control is configured for 120 Vac, a 2:1 Isolation transformer must be used to step and isolate the supply voltage. This isolation transformer must isolate both the neutral and line on the secondary side. Also, the neutral and ground on the secondary side should not be bonded or connected. To check isolation from earth ground, check the continuity of each lead on the isolation transformer with respect to ground (G). Check this before connecting the leads to the control panel. See Figure 1-4.

The control panel assembly is grounded through the tank or a separate grounding strap. Earth ground of the isolation transformer is not connected to the control. Only source of earth ground reference on secondary of Isolation transformer is through Control Box connection to ground.

Option 2:

Control Box assembly floating (typical shop or lab application when control is mounted on ungrounded regulator tank or setting on workbench).

In this case the ground of the isolation transformers is connected to the green terminal post on the CL-6 series control. In this configuration, the only source of earth ground reference on the secondary side of the isolation transformer is through the control box connection to the isolation transformer ground.

6 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

CL-6 Panel

2:1 Isolation

Transformer

240V

120V

Neutral connected to ground at panel to shunt

HV to LV faults/leakage to

Earth Ground. Can't be removed.

120V External

Source

Core may or may not be tied to Earth

Earth Ground not carried to panel.

To assure isolation from Earth

Ground check continuity of each of the leads of the isolation transformer to G before connecting leads to control panel.

Figure 1-4. 240 Vac application with Eaton 120 V control - Option 1.

CL-6 Panel

2:1 Isolation

Transformer

240V

Neutral connected to ground at panel to shunt

HV to LV faults/leakage to

Earth Ground. Can't be removed.

120V

120V External

Source

Core may or may not be tied to Earth

To assure isolation from Earth

Ground check continuity of each of the leads of the isolation transformer to G before connecting leads to control panel.

Figure 1-5. 240 Vac application with Eaton 120 V control - Option 2.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 7

120 Vac applications to Eaton 120 V control

Option 1:

Control Box Assembly Panel connected to earth ground to provide protection to operations personnel (typical field application where control is mounted on grounded regulator tank or dropped down pole with control box grounded properly).

Since the control is configured for 120 Vac, a 1:1 Isolation transformer must be used to isolate the supply voltage.

This isolation transformer must isolate both the neutral and line on the secondary side. Also, the neutral and ground on the secondary side should not be bonded or connected.

Option 2:

Control Box Assembly floating (typical shop or lab application where control is mounted on ungrounded regulator tank or sitting on workbench).

The 120 Vac external source must be completely isolated.

8 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

CL-6 Panel

120V

1:1 Isolation

Transformer

Core may or may not be tied to Earth.

Neutral connected to ground at panel to shunt

HV to LV faults/leakage to

Earth Ground. Can't be removed.

120V

Earth Ground not carried to panel.

120 V External

Source

To assure isolation from Earth

Ground check continuity of each of the leads of the isolation transformer to G before connecting leads to control panel.

Figure 1-6. 120 Vac application with Eaton 120 V control - Option 1.

CL-6 Panel

1:1 Isolation

Transformer

120V

Core may or may not be tied to Earth.

Neutral connected to ground at panel to shunt

HV to LV faults/leakage to

Earth Ground. Can't be removed.

120V

120 V External

Source

To assure isolation from Earth

Ground check continuity of each of the leads of the isolation transformer to G before connecting leads to control panel.

Figure 1-7. 120 Vac application with Eaton 120 V control - Option 2.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 9

Upper panel (black)

Display

The display is a back-lit LCD that will display information in four lines of twenty characters and in four different languages: English, French, Portuguese, and Spanish. See

Figure 1-8.

Utilizing a 3-level, nested menu structure, items are structured in levels one and two and parameters are in level three. The main menu is the default display; refer to

Table 5-2 for the complete nested menu. When a menu is displayed, the current menu item is indicated by a cursor on the display screen. Parameter values appear on the LCD, right justified, with a decimal point shown as necessary.

Note: Only four line items appear on the display at one time. Moving the cursor down from the fourth line will shift the line items up one item at a time.

The LCD display panel contrast is adjustable. Press and hold the Function key, then press the scroll up arrow key to increase or the scroll down arrow key to decrease contrast.

Keypad

The front panel interface for the CL-6 control uses a 16-key touchpad laid out in a diamond pattern. Refer to Figure 1-9.

The keypad allows for three modes of interface with the three levels of nested menu structure: numeric keys, shortcut keys, and scroll keys.

Numeric keys

To use the keypad as a numeric keypad to enter function codes (FC) or parameter values, press the Function or Edit/

Reset keys. When the numeric keying is complete, press

Enter.

Use function codes to quickly program and read Level

3 parameters. To display a parameter on the LCD via a function code (FC), press Function, key in the function code (FC) number, then press Enter. For security, certain parameters, as noted in Table 4-1, can only be accessed via the function code method. Also, certain parameters and data, such as alarms, custom logic, histograms, and profiler data, can only be accessed using ProView™ NXG interface software.

See Table 5-2 for a list of the functions grouped by menu level and Table 5-3 for a numerical listing of function codes.

Figure 1-8. Main Menu, Forward Direction, and

Metering-PLUS Tap Position screens.

10 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Scroll Key

Function Key

Edit Key

Number Keys

Scroll Key

Figure 1-9. Fully numeric, scrollable keypad with Metering-PLUS.

Short-cut keys

There are two types of short-cut keys which access specific locations within the nested menu structure. Keys *1–*4 support the Metering-PLUS feature which provides, with one touch, commonly requested diagnostic data; see

Figures 1–8 and 1–9. Keys 5–9 and 0 support Level 1 menu items; press keys 5–9 and 0 and the associated Level 2 menu items will display in the LCD.

The Metering-PLUS data includes Compensated Voltage,

Load Voltage, Load Current, and Tap Position; refer to the

Advanced Features: Metering-PLUS section of this manual for more information.

The Level 1 menu items include Settings, Features,

Counters, Metering, Alarms/Events (occurrences), and

Diagnostics.

Scroll keys

Use the scrolling arrows to move the cursor between items within a menu level location. For example, within the Level 2 submenu for Metering, the arrows will scroll the cursor through Instantaneous, Forward Demand,

Reverse Demand, and Master Reset, and then return to

Instantaneous.

The Enter and Escape keys are used to enter the menu structure or move between menu levels. Enter is used to access submenus. Escape is used to step back or exit submenus. Repeated pressing of the Escape key will return the display screen to the level one main menu. (A deeply nested level location necessitates a greater number of depressions.)

N ote: Only four line items appear on the display at one time. Moving the cursor down from the fourth line will shift the line items up one item at a time.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 11

Alarm

Indicators

Status

Indicators

Communication

Indicators

Com 1 Port

Figure 1-10. Alarm and communication indicators and

Com 1 Port.

Alarm indicators

These LEDs indicate an Alarm or Warning, a user-defined condition, or a diagnostic error. See Figure 1-10.

Communications

Communication indicators

These LEDs give the ability to see that transmit and receive messages are active when the transfer of information is taking place. See Figure 1-10.

Communication Port 1

Com 1 Port is an RS-232 (DCE) port that interfaces local communication between the control and a PC using a standard DB9-style RS-232 cable. A null modem is not required. See Figure 1-10.

Flash Card Port

Figure 1-11. Status indicators and flash card port.

Status indicators

These LEDs indicate regulation conditions: Voltage

Limiter High, Out-of-Band High, Out-of-Band Low, Voltage

Limiter Low, Tapping Blocked, Reverse Power, and Voltage

Reduction. Refer to Figure 1-11.

Refer to the Control Operation, Control Features, and

Advanced Features sections of this manual for more information.

Flash card port

The flash card port accepts a Type 1 compact flash card.

It is used to write existing data logs and to load and save standard and custom configurations. See Figure 1-11. FC

350 through FC 368 are flash card functions; refer to the appropriate listing in Table 5-3. See the Advanced Features:

Compact Flash Card section of this manual for more information.

12 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Section 2: Control installation

WARNING

Hazardous Voltage. To protect personnel from surges while operating the control, follow these control enclosure grounding procedures: a) If the enclosure is attached to the regulator tank or is remote from the tank but only accessible with a ladder, connect the enclosure to the regulator-to-ground rod conductor; b)

If the enclosure is accessible by personnel standing on the ground, connect the enclosure directly to a ground mat and ground rod. Failure to comply can result in severe personal injury or death.

WARNING

Hazardous Voltage. The control box must be solidly earth grounded. Failure to comply can cause severe personal injury and equipment damage.

CAUTION

Equipment damage. Be mindful of polarity when using an external source. Polarity reversal will result in control damage.

Mounting the control

The CL-6 regulator control from Eaton can be mounted on the regulator tank or at a point remote from the unit.

Rubber-covered cable is available for interconnection between the control and the regulator. Refer to the

Accessories section of this manual.

Placing the control into service

Refer to the appropriate regulator manual, as indicated on the regulator nameplate, for specific information on the regulator installation (see Figure 3-3). Refer to Tables 2-1 and 2-2 for control specifications and metering accuracy.

When energizing the control from an external source, use only a 120 Vac source, unless the control was configured for 240 Vac, as indicated by a decal adjacent to the terminals.

Table 1. Control Specifications

Description

Physical Size

Height

Width

Depth

Weight

Burden @ 120 V

Operating Temperature Range

Control System Accuracy

Specifications

417 mm (16.4”)

234 mm (9.2”)

81 mm (3.2”)

3.8 kg (8.4 lbs.)

4 VA

-40°C to +85°C

±1%

Table 2. Metering Accuracy

Load Voltage and Differential/Source Voltage

80–137 Vac, 45–65 Hz with error not to exceed 0.5%* † of the reading under all conditions.

The control will withstand up to 137 V without damage or loss of calibration.

Current Input

0-0.400 A AC 45–65 Hz with error not to exceed 0.6% (0.0012

A)* of the nominal full load current (0.200 A), under all conditions.

The control will withstand the short-circuit rating of the regulator without damage or loss of calibration.

Calculated Values, kVA, kW, kvar

0–9999, with error not to exceed 1% * under all conditions.

Harmonic Analysis, Current and Voltage Harmonics

2nd–15th harmonic frequencies and THD, with error not to exceed

5% under all conditions

* Basic accuracy of the device, excluding PT and CT errors.

† 0.5% on 120 V base: (0.5%) (120) = 0.6 V

Setting the control for service

The control must be properly programmed for service. Refer to the Initial Control Programming section of this manual.

The control must be energized to be programmed. Apply

120 Vac, or other voltage as indicated by decal, to the external source terminals; ensure the ground wire is connected to the ground terminal; and place power switch in the external position. Alternately, the regulator may be energized at line potential and the power switch placed in the Internal position.

When power is applied to the control, the self-diagnostic routine will commence and the LCD display will activate, followed by a PASS message. Check the date and time displayed and reset if necessary. If the FAILURE or

Diagnostic Error message is displayed, refer to the

Troubleshooting section of this manual.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 13

Operational check

Pre-installation check

The CL-6 control has the facilities for either manual or automatic operation of the tap-changer, using either the internal source of power (the regulator) or an external source. To perform an operational check of the control before installing the regulator, follow these steps.

Note: For use with a non-Eaton voltage regulator, refer to the manufacturer’s manual for equipment specific information.

1. Open V1 (and V6, if present) knife switch(es) located on back panel of control enclosure.

2. Place POWER switch in Off position and CONTROL

FUNCTION switch in Off position.

3. Connect a variable 120 Vac 50/60 Hz source to

EXTERNAL SOURCE terminals. Controls wired for an external source of 220 –240 Vac have a decal specifying

“240” at the terminals. Verify proper polarity.

4. Place POWER switch in External position.

5. Move CONTROL FUNCTION switch to Manual, press and hold Raise/Lower momentary toggle switch. Allow tap-changer to operate to 8 L, the 5% buck position.

Verify tap position indication (TPI) is registering properly by pressing *Tap Position key.

6. Raise and hold the Raise/Lower momentary toggle switch. Allow tap-changer to operate to 8 R, the 5% boost position.

7. Place CONTROL FUNCTION switch in the Auto/

Remote position.

8. Increase variable voltage source until applied voltage is out-of-band. Note that the Out-of-Band High LED on the front panel will come on. After the time delay period, control will issue a lower-tap-change signal.

Verify tap position indication (TPI) is registering properly by pressing *Tap Position key and comparing the reading to the tap position indicator on the regulator junction box.

9. Decrease variable voltage source until applied voltage is out-of-band. Note that the Out-of-Band Low LED on the front panel will come on. After the time delay period, control will issue a raise-tap-change signal. Verify tap position indication (TPI) is registering properly by pressing *Tap Position key and comparing the reading to the tap position indicator on the regulator junction box.

10. Place CONTROL FUNCTION switch in Manual position and manually return tap-changer to neutral. When on neutral, the Neutral Light will illuminate continuously and position indicator will point to zero.

11. Place CONTROL FUNCTION switch in Off position.

12. Press down on DRAG HAND Reset momentary toggle switch and release; the position indicator drag hands will reset to indicating hand.

13. Turn POWER switch to Off and disconnect power supply from EXTERNAL SOURCE terminals.

In-service check

With the control programmed for basic operation, perform an operational check of manual and automatic operation.

1. Press the *Comp Voltage key to display compensated voltage and both band edges in the LCD.

2. Place CONTROL FUNCTION switch in Manual position.

3. Toggle the Raise/Lower switch up to activate a raise operation. Allow tap-changer to operate for enough steps to take voltage out-of-band. Note that the Out-

of-Band High LED on the front panel will come on.

4. Place CONTROL FUNCTION switch in the Auto/

Remote position. After the time delay period, the control should cause the regulator to step down to the top band edge. This will display in the LCD.

EXAMPLE: 120 V and a 2 V bandwidth = 121 V top band edge.

5. After voltage is brought in-band and tap changing has stopped, move CONTROL FUNCTION switch to the

MANUAL position.

6. Toggle the Raise/Lower switch down to activate a lower operation. Allow tap-changer to operate for enough steps to take voltage out-of-band. Note that the

Out-of-Band Low LED on the front panel will come on.

7. Place CONTROL FUNCTION switch in the Auto/

Remote position. After the time delay period, the control should cause the regulator to step up to the lower band edge. This will display in the LCD.

EXAMPLE: 120 V and a 2 V bandwidth = 119 V lower band edge.

Control bench testing

When applying external voltage to a CL-6 control, disconnected from the control enclosure, follow these steps:

1. Place a jumper between positions 7 and 8 of the disconnect plug on the wiring harness of the control.

2. Place a jumper between positions 5 and 6 of the disconnect plug on the wiring harness of the control.

3. Connect the external source to the external source post on the front of the control. Connect the hot lead to the black terminal post, the neutral to the white post, and the ground to the green terminal post. See the detailed instructions for applying power to the external source terminals in Section 1 of this manual.

14 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Field calibration check

To check the calibration of the control, compare the voltage that the control reports on the display to the voltage measured at the test terminals.

Note: Field calibration checks are only an indication of calibration and are not as precise as the procedure described in the Troubleshooting section of this manual.

1. Connect an accurate true-RMS responding voltmeter to the voltmeter terminals.

2. Use the keypad to access FC 47 parameter. Key in:

FUNCTION, 47, ENTER.

Or access via the menu: Features > Calibration >

Voltage Calibration.

3. Under ideal conditions, the displayed voltage of the control will match the voltage of the voltmeter.

Realistically, the voltages may be slightly different because:

A. The metering and operation is based upon the RMS value of the fundamental power line frequency.

Thus, the metered values exclude the influences of harmonic voltages which are probably present on the line. A true RMS meter, however, will include these harmonic voltages in its calculations of the RMS voltage. This does not present a problem with either metering device, since each device uses a different approach to metering.

B. The calibration of the voltmeter being used for measurement is probably not exact. Even a very good meter with a basic accuracy of 0.5% could be in error by as much as 0.6 V (out of 120 V) and still be considered to be “in calibration.” The control is calibrated using a conditioned power supply and reference voltmeters which are periodically calibrationchecked, traceable to the National Bureau of

Standards.

Note: The control firmware is designed to perform ratio correction. Through the use of the ratio-correcting transformer (RCT) located on the back panel, the voltage brought to the control is usually corrected to the 120 V base voltage. However, there are some ratings in which this voltage is not fully corrected by the RCT. Refer to the regulator nameplate for specific information for that regulator. Table 3-3 gives a general indication of these voltages.

When mounting the CL-6 control into an existing enclosure, the existing enclosure may not have

RCTs installed. In this case the voltage measured on the voltmeter terminals may not match the voltage read on the control.

Whatever voltage results from dividing the nominal system voltage, FC 43, by the overall PT ratio,

FC 44, is considered by the control to be the nominal voltage. Therefore, when that voltage appears at the input of the control, 120 V will be reported as the output voltage, FC 6, whether the nominal is actually 120 V or not. Likewise, the compensated voltage, FC 8, and input voltage,

FC 7, will be scaled accordingly. If the regulator is equipped and programmed for reverse power operation, the compensated voltage will be correct even during reverse power conditions.

The load voltage, FC 10; source voltage, FC 11; and calculated parameters such as the kVA, kW, and kvar, are not scaled similarly to FC 6 and FC 8.

Instead, they reflect the true value of line voltage.

Note: The voltage measured at the test terminals during reverse power flow is the new source voltage at the load bushing of the regulator.

Removal from service

Refer to the appropriate regulator manual as indicated on the regulator nameplate for further information.

Determining neutral position

DANGER

Explosion Hazard. During bypass switching, the regulator must be in the neutral position. Prior to bypass switching: 1) The regulator must be placed in the neutral position; 2) Tap-changer operation must be disabled. If the regulator is not in the neutral position, part of the series winding will be shorted when the bypass switch is closed, resulting in high circulating current. Failure to comply will result in death or severe personal injury and equipment damage.

WARNING

Explosion Hazard. Bypass a regulator with the line energized only if the position indicator, the neutral light, and the control tap position indicate neutral and the voltage measured between the source and load bushings using an approved voltmeter is zero. If both neutral indicators do not indicate neutral or there is a voltage between the source and load bushings, the line should be de-energized to avoid shorting part of the series winding and resultant high circulating current.

Failure to comply can result in death or personal injury and equipment damage.

Return the regulator to neutral. Only a regulator in the neutral position can be safely removed from service without interrupting load continuity. It is recommended to use more than one method to determine the neutral condition.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 15

Return the regulator to neutral

WARNING

Explosion Hazard. To insure a complete tapping operation when returning the tap changer to the neutral position, the CONTROL FUNCTION switch must be placed in the OFF position before the POWER switch is placed in the OFF position. Failure to comply can result in the tap changer stepping off of neutral immediately upon being energized which can result in death or severe personal injury and equipment damage.

1. Use the Raise/Lower switch to bring the regulator to the neutral position.

2. When in neutral, the Neutral Light will be continuously lit on the control front panel and the position indicator will point to zero.

3. Verify the neutral position of the regulator using four methods.

A. Verify that the neutral indicator light on the control is indicating the neutral position. Neutral is indicated only when the light is continuously illuminated.

B. Verify the tap position of the control indicates neutral

(numeric key pad number 4).

C. Verify that the position indicator on the regulator is in the neutral position.

D. Using an acceptable method, verify that there is no voltage difference between the source and load bushings.

WARNING

Explosion Hazard. After placing the regulator in the neutral position for bypass switching, always disable the motor to prevent a tap change during bypassing which can result in the tap-changer stepping off of neutral. Failure to comply can cause death or severe personal injury and equipment damage.

4. When the regulator has been placed in the neutral position, but prior to bypassing, additional safety action must be taken to ensure that the tap-changer will not inadvertently switch to an off-neutral position. This can be accomplished by doing the following:

A. Place the CONTROL FUNCTION switch in the Off position.

B. Remove the motor fuse.

C. Place the control POWER switch in the Off position.

D. Open V1, knife switch (and V6 if present) located on the control back panel.

Removing the control

The control may be removed from the regulator with the regulator energized. Record settings, etc., to facilitate replacement of the control.

To open the control, unscrew the captive knob on the left side of the panel. This allows the control to swing open on its hinges. With the control open, the back panel is readily accessible. The design of the control enclosure, back panel, and control enables easy replacement of the control, leaving the back panel, control enclosure, and cable intact. To remove the control, proceed as follows:

WARNING

Flashover Hazard. Push the C shorting switch closed before attempting to remove the front panel. Failure to comply can open the regulator CT circuit, producing a flashover in the control, causing personal injury and equipment damage.

1. Push closed the current shorting switch C. This shorts out the secondary of the regulator CT.

Note: Regulators shipped with a quick-disconnect cable contain a solid-state CT monitoring circuit in the junction box. This device automatically places a burden on the CT anytime the CT circuit is opened. For consistency, it is recommended that the CT shorting switch be used whenever it is present on the back panel.

2. Pull open disconnect switch V1 (and V6 if present). This de-energizes terminal board TB2.

3. Disconnect the control from the back panel at TB2, located at the bottom of the back panel.

4. Disconnect the control ground lead from the back panel.

The control can now be lifted off its hinges. Care should be taken to prevent damage to a control while in transit and/or storage.

WARNING

Flashover Hazard. Do not pull open the current shorting switch C until the TB2 connection is completed. Failure to comply can open the regulator CT secondary and cause a flashover in the control, causing personal injury and equipment damage.

16 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Replacing the control

To place a control into the control enclosure, follow the procedure outlined below:

1. Engage control on enclosure hinges.

2. Connect control ground lead to back panel.

3. Reconnect control to back panel at TB2, located at the bottom of back panel.

4. Push closed disconnect switch V1 (and V6 if present).

5. Pull open current shorting switch C.

6. Close control and tighten locking screws.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 17

Section 3: Initial control programming

This section explains each step for properly completing initial control programming settings on a CL-6 voltage regulator control and back panel. Check the System Line Voltage rating on the regulator nameplate. Refer to the regulator service manual as identified on the regulator nameplate for additional information on the regulator.

This section covers standard set-up procedures for controls, including control replacement. Refer to

Programming and Reconfiguring for Different

Voltage Systems, in this section of this manual, when installing/replacing the CL-6 control and reconfiguring the regulator for a different voltage system.

1. Start with all switches on the control front panel turned

Off.

2. There are two options for powering the control: internal power or external power. Select one method and follow the appropriate step.

A. Internal Power

Turn POWER switch to Internal from the Off position.

B. External Power

Apply external source to EXTERNAL SOURCE binding posts: hot lead to black, top binding posts; neutral lead to white, bottom binding posts; ground to green ground binding posts. See detailed instructions for applying power to the external source terminals in Section 1 of this manual.

Turn POWER switch to External from the Off position.

Basic programming

Complete the steps in Table 3-1 (on the next page) to program the control for basic operation. Continue with the steps in Table 3-2 to then program the control for additional features or control replacement. For each item, check each value and verify or change as appropriate.

Note: After turning on the control and the LCD displays

PASS, press Escape for further keypad use.

Step-by-step instructions are included in Tables 3-1 and

3-2. The Instructions column lists keys to press (i.e.; Enter,

Edit, 7, etc.). Also, italicized instructions denote a choice or an entry; Value denotes a desired value entered via the numeric keypads; and following each “Scroll” is an italicized list of alternatives that appear in the display, within that function code. Scroll through the list until the desired alternative is selected, and then press Enter.

Perform a Demand Master Reset (FC 38) after completing the initial control programming to reset to present demand values.

Note: Go to FC 141 to change the language setting.

18 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Table 3-1. Programming for Basic Operations

Function

Code

Description

Security Function

Forward Set Voltage

Forward Bandwidth

Forward Time Delay

Forward Line Drop Comp. Resistance

Forward Line Drop Comp. Reactance

Regulator Identification

Regulator Configuration

Control Operating Mode

System Line Voltage

Overall P.T. Ratio

C.T. Primary Rating

Demand Time Interval

Tap Changer Type

Instructions

Function, 99, Enter Password 32123 (default), Enter

Function, 1, Enter, Edit, Value, Enter

Function, 2, Enter, Edit, Value, Enter

Function, 3, Enter, Edit, Value, Enter

Function, 4, Enter, Edit, Value, Enter

Function, 5, Enter, Edit, Value, Enter

Function, 40, Enter, Edit, I. D. number, Enter

Function, 41, Enter, Edit, Scroll - Wye; Delta Lagging; Delta Leading, Enter

Function, 42, Enter, Edit, Scroll - Sequential; Time Integrating; Voltage Averaging, Enter

Function, 43, Enter, Edit, Value, Enter

Function, 44, Enter, Edit, Value, Enter

Function, 45, Enter, Edit, Value, Enter

Function, 46, Enter, Edit, Value, Enter

Function, 49, Enter, Edit, Scroll - Cooper QD8; Cooper QD5; Cooper QD3; Cooper Spring Drive;

Cooper Direct Drive; Siemens; General Electric; Howard; LTC-Reinhausen, Enter

Function, 50, Enter, Edit, Month, Day, Year, Hour, Minute, Enter

Function, 140, Enter, Edit, Scroll - Type A; Type B; Type C; Type D, Enter

Function, 144, Enter, Edit, Value, Enter

Function, 145, Enter, Edit, Value, Enter

Function, 146, Enter, Edit, Scroll - Vdiff Mode; Vin Mode, Enter

Function, 69, Enter, Edit, Scroll - Normal; Blocked, Enter

140

144

145

146

Calendar/Clock

Regulator Type

P.I. ADD-AMP™ High Limit

P.I. ADD-AMP Low Limit

Vin P.T. Configuration

Auto Operation Blocking Status

072

073

074

080

081

082

075

076

077

052

053

054

055

056

Requirements for Reverse Sensing Mode without IDPTs

039 Source Voltage Calculation Function, 39, Enter, Edit Scroll - On; Off, Enter

Required for Reverse Sensing Modes

051 Reverse Set Voltage

Reverse Bandwidth

Reverse Time Delay

Reverse Line Drop Comp. Resistance

Reverse Line Drop Comp. Reactance

Reverse Sensing Mode

Function, 51, Enter, Edit, Value, Enter

Function, 52, Enter, Edit, Value, Enter

Function, 53, Enter, Edit, Value, Enter

Function, 54, Enter, Edit, Value, Enter

Function, 55, Enter, Edit, Value, Enter

Function, 56, Enter, Edit, Scroll - Locked Forward; Locked Reverse; Reverse Idle;

Bi-directional; Neutral Idle; Co-generation; React Bi-directional, Enter

Required for Voltage Reduction Mode

070 Voltage Reduction Mode

Local/Digital Reduction Value

Remote #1 Value

Remote #2 Value

Remote #3 Value

# of Pulse Reduction Steps

% of Voltage Red Per Pulse Step

Required for Voltage Limit Mode

Voltage Limit Mode

High Voltage Limit

Low Voltage Limit

Function, 70, Enter, Edit, Scroll - Off; Local/Digital Remote; Remote/Latch; Remote/

Pulse, Enter

Function, 72, Enter, Edit, Value, Enter

Function, 73, Enter, Edit, Value, Enter

Function, 74, Enter, Edit, Value, Enter

Function, 75, Enter, Edit, Value, Enter

Function, 76, Enter, Edit, Value, Enter

Function, 77, Enter, Edit, Value, Enter

Function, 80, Enter, Edit, Scroll - Off; High Limit Only; High/Low Limits, Enter

Function, 81 Enter, Edit, Value, Enter

Function, 82, Enter, Edit, Value, Enter

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 19

Programming and reconfiguring for different voltage systems

Reconfiguring regulators requires more than just reprogramming the control. In reconfiguring, refer to the nameplate and, if necessary, change the connection of the ratio-correcting transformers (RCTs) on the back panel

(see Figure 3-1). In some cases, it may be necessary to reconnect the tap windings in the regulator via the handhole cover.

Refer to the nameplate for information on programming and reconfiguring a regulator: confirm Regulator Configuration

(FC 41), System Line Voltage (FC 43), and Overall PT Ratio

(FC 44). Refer to Allowable System Voltages and

Calculation of Overall PT Ratio and Determination of Leading or Lagging in Delta-Connected

Regulators, in this section of the manual.

WARNING

Explosion Hazard. Bypass a regulator with the line energized only if both the position indicator and the neutral light indicate neutral. If both do not indicate neutral, the line should be de-energized to avoid shorting part of the series winding and resultant high circulating current. Failure to comply can result in death or personal injury and equipment damage.

1. Start with all switches on the control front panel turned Off.

2. Refer to the nameplate. If the Control Winding Taps are required to be changed to reconfigure, de-energize the regulator. Open up the hand hole and reconnect the E tap lead on the tap-changer terminal board on top of the tap-changer. (Example: If the regulator is being changed from a 7200 to 14400 load voltage, the Control Winding

Figure 3-1. Ratio-correcting transformers’ connections.

3. Open V1 switch and, if present, V6. Refer to Figure 3-2.

4. Connect the RCT per the information supplied by the nameplate. The RCT is to be connected to the value listed on the nameplate for the load voltage to be regulated. The adjustable lead is tagged and has a loop in it.

5. Close V1 switch and, if present, V6.

6. There are two options for powering the control panel: internal power or external power. Select one method and follow the appropriate step.

A. Internal Power

Turn POWER switch to Internal Power from the

Off position.

B. External Power

Apply external source to EXTERNAL SOURCE binding post: hot lead to black, top binding post; neutral lead to white bottom binding post; ground to green ground binding post. Turn POWER switch to External power from the Off position. See the detailed instructions for applying power to the external source terminals in

Section 1 of this manual.

Figure 3-2. V1, V6, and C connections.

20 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Refer to Table 3-1 for the steps to program the control panel for operation. Refer to the Appendix for the Wiring

Diagram.

Allowable system voltages and calculation of overall PT ratio

If the system voltage is other than those listed on the nameplate, it can be determined if there is sufficient ratio correction available from the control winding (internal PT) taps and the Ratio Correction Transformer (RCT) taps to allow the CL-6 Series control and motor to function properly.

The general guideline is that the overall PT ratio is sufficient if the voltage delivered to the control for the nominal voltage conditions is in the range of 115 –125 V.

To determine the voltage delivered to the control, use the following procedure:

1. Calculate the desired PT ratios.

Desired PT Ratio = Desired system voltage ÷ 120 V

2. Choose the internal PT ratio on the nameplate closest to the desired PT Ratio.

3. Calculate the actual voltage at the output of the internal PT.

Internal PT Output Voltage = Desired system voltage ÷

Selected Internal PT Ratio

4. Choose the RCT tap (133, 127, 120, 115, 110, 104) closest to the internal PT output voltage.

5. Given the RCT input tap, use Table 3-2 to determine the

RCT ratio.

6. Calculate the control input voltage.

Control Input Voltage = Internal PT Output Voltage ÷ (RCT

Ratio)

7. Calculate the overall PT Ratio.

Overall PT Ratio = Internal PT Ratio x (RCT Ratio)

EXAMPLE: If a 60 Hz, 7620 V regulator is to be used on a system with a nominal voltage of 2500 V, the following is determined:

1. 2500 V ÷ 120 V = 20.8

2. Choose 20:1 for the internal PT ratio.

3. Internal PT output voltage = 2500 V ÷ 20 = 125 V

4. Best RCT input tap is 127.

5. RCT ratio is 1.058.

6. Control input V = 125 ÷ 1.058 = 118 V

This is within allowable range.

7. Overall PT ratio = 20 x 1.058 = 21.2:1

115

110

104

Table 3-2. RCT Ratios

RCT Input Tap

133

127

120

RCT Ratio

1.108

1.058

1.000

.0958

.0917

.0867

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 21

2075 4485 210

692 1384 490

Figure 3-3. Nameplates, 60 Hz regulator and 50 Hz regulator shown.

22 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Determination of leading or lagging in deltaconnected regulators

For a regulator to operate properly when connected phase to phase, it is necessary for the control to be programmed with the correct regulator configuration in FC 41. It must be determined whether it is connected leading or lagging. The control aids the operator in making this determination.

1. Regulator must be installed.

2. POWER switch must be set to Internal.

3. V1 knife switch (and V6, if present) must be closed.

3. Knife switch C must be open. Current must be flowing.

4. CONTROL FUNCTION switch may be in any position

(Auto/Remote-Off-Manual).

5. For regulator #1, set FC 41 to Delta Lagging and record the Power Factor, FC 13.

6. For the same regulator, set FC 41 to Delta Leading and record the Power Factor.

7. Repeat steps 6 and 7 for each regulator in the bank.

8. For each regulator, one of the two power factor values will be reasonable and the other will be unreasonable.

Set the Regulator Configuration (FC 41) to the value which produced the reasonable power factor. See Table

3-3.

For one regulator: Set FC 41 to the value which produced the reasonable power factor.

For two regulators in open-delta: See the example in

Table 3-3. In an open-delta connection, one of the regulators will always be leading and the other lagging. The reasonable power factor for each regulator should be very close to the typical power factor of the system. In this example, regulator #1 is the lagging unit and regulator #2 is the leading unit.

For three regulators in closed-delta: In closed-delta, all three regulators are either leading or lagging, depending on how they are connected relative to generator phase rotation. Set FC 41 of all three regulators to the value which produced the reasonable power factor.

Table 3-3. Sample Power Factor Values for Regulators Connected in Open-Delta

Configuration

Recorded Power Factor (FC 13)

Configuration (FC 41)

Delta Lagging

Delta Leading

Reg. #1

0.94*

0.17

Reg. #2

-0.77

0.93*

* Reasonable power factor values.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 23

Section 4: Control operation

Automatic operation

In the automatic mode of operation, the POWER switch will be set on Internal and the CONTROL FUNCTION switch will be placed on Auto. The regulator is assumed energized from the primary circuit. If the sequential mode of operation (the standard mode) is selected, the control response on Eaton's

Cooper Power series voltage regulator is as follows:

1. As the primary voltage moves to a level which represents an out-of-band condition, the sensing voltage will correspondingly reflect the same results on the 120 V base. Assuming the voltage dropped low, a lower than normal signal will appear at the printed circuit board input terminals.

2. The signal is transformed and converted into a digital format for use by the microprocessor.

3. The microprocessor, recognizing the voltage condition as low and out-of-band, issues an output which activates the Out-of-Band Low indicator and starts an internal timer, which is equivalent to the time-delay setting.

4. During the time-out period, the voltage is continually sensed and sampled. Should the voltage momentarily move into band, the Out-of-Band Low indicator is deactivated and the timer is reset.

5. At the end of the time-delay period, the microprocessor issues an output which causes the RAISE triac to be activated.

6. The tap-changer motor begins to turn as a result of triac closure, and a cam on the tap-changer closes the

RAISE holding switch. This now provides an alternate source for the motor current, which passes through the input terminals on the circuit board.

7. The microprocessor now recognizes that current is flowing in the holding switch circuit. The RAISE triac is deactivated.

8. As a result of the triac being deactivated, the motor current is now carried solely by the holding switch circuit. When the motor rotation is complete, the holding switch opens as a result of the cam action and the motor stops.

9. The microprocessor recognizes that the tap change is now complete by detecting that motor current is no longer flowing. The operations counter and tap position indication are incremented. A 2-second pause then occurs, allowing the sensing voltage to stabilize after motor operation.

10. At the end of this pause, if the voltage is still out-ofband, another output is issued to reactivate the Raise triac, thus starting another tap change sequence. If the voltage is in-band, the Out-of-Band Low indicator is turned off and the time-delay timer is reset.

This sequence is altered slightly if the voltage-averaging or time-integrating mode of operation is selected. These characteristics are described in Control Operating

Modes in this section of the manual.

Manual operation

In the manual mode of operation, the POWER switch can be set on either Internal or External and the control switch will be placed on manual. If the external position is chosen, an external source must be applied to the terminals on the control. This should be a nominal 120 Vac source (or other ac voltage as indicated by a decal) and should not be a direct current to alternating current (DC-to-AC) inverter.

Operation of the momentary toggle Raise/Lower switch applies power through the position indicator limit switch contacts directly to the tap-changer motor. As the tapchanger motor cam rotates, the holding switch is closed, as described above in the Automatic Operation section.

This holding-switch current is sensed by the circuit board, and the operations counter and tap position indicator are appropriately updated.

Tap change operation will continue as long as the Raise/

Lower switch is held in either the raise or lower position and the ADD-AMP™ limit switch is not activated to open the circuit.

Self-diagnostics

There are three events which trigger the self-diagnostic routines: the initial control power-up, operator entry of selftest mode using FC 91, or detection of a firmware problem.

Refer to the Troubleshooting section of this manual for more information on control self-diagnostics.

24 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Security system

The security (password) system implemented on the control is structured into four levels. This permits selective access to the various parameters as dictated by the active security level. Most function codes may be read (accessed) at level

0, the base (unsecured) level. The security level required to change or reset each parameter is listed in Table 4-1.

The security access codes for levels 1, 2, and 3 have been programmed into the control at the factory. These codes may be changed by the user according to Table 4-1. Access into the system is accomplished by entering the appropriate security code at FC 99.

Table 4-1. Security Codes

Security Level

Accessible at

Function Code

No Code Required

1 96

Factory-Programmed

Code

No Code Required

1234

12121

32123

The user has the option of overriding (inhibiting) one or more levels of security by choosing the appropriate Security

Override Code at FC 92. Choices at FC 92 are standard security mode (no override), override level 1, override levels

2 and 1, and override levels 3, 2, and 1.

The values of the three security codes, FC 96, FC 97, and

FC 98, may be read only at level 3. If the level 3 code has been changed and forgotten, it may be retrieved with a compact flash card or a personal computer using ProView

NXG software.

User-Definable Range Functions Available at the Active Code

No Code Required Read all parameters except security (FC 96, FC 97, & FC 98).

1-9999 Read all parameters as described above,and reset all demand metering and tap position maximum and minimum values and date/times

10000-19999

20000-32766

Read all parameters as described above, reset all demand meter and tap position maximum and minimum values and date/times, and change any operational or setup parameter.

Read, reset, or change any parameter.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 25

Basic control operations

Set voltage

The set voltage is the voltage level to which the control will regulate on the 120 V base. Since the control performs ratio correction in the firmware, this value will normally be set for 120.0 V, unless it is desired to operate at a voltage level higher or lower than nominal. For proper operation, the ratio-correcting transformer, located on the back panel of the control enclosure, must also be set for the correct tap as shown by the regulator nameplate.

Line compensation, resistance and reactance settings

Quite often regulators are installed some distance from the theoretical load center (the location at which the voltage is to be regulated). This means the load will not be served at the desired voltage level due to the losses

(voltage drop) on the line between the regulator and the load. Furthermore, as the load increases, line losses also increase, causing the lowest voltage condition to occur during the time of heaviest loading.

To provide the regulator with the capability to regulate at a projected load center, the control has line-drop compensation elements within it. This circuitry usually consists of a current source (CT), which produces a current proportional to the load current, and resistive (R) and reactive (X) elements through which this current flows. As the load increases, the resulting CT current flowing through these elements produces voltage drops, which simulate the voltage drops on the primary line.

Within the control, the input current is sampled and is used in a computer algorithm which calculates the respective resistive and reactive voltage drops based upon the linedrop compensation values programmed into the control at

FC 4 and FC 5 (or FC 54 and FC 55 for reverse power flow conditions). This is an accurate and economical means of developing the compensated voltage.

To select the proper R and X values, the user must know several factors about the line being regulated.

Bandwidth

The bandwidth is defined as that total voltage range, around the voltage setting, which the control will consider as a satisfied condition. As an example, a 2 V bandwidth on a

120 V setting means the operational timer will not activate until the voltage is below 119 V or above 121 V. When the voltage is in-band, the band edge indicators are off and the timer (time delay) is off. Selection of a small bandwidth will cause more tap changes to occur, but will provide a more tightly regulated line. Conversely, a larger bandwidth results in fewer tap changes, but at the expense of better regulation. Selection of the bandwidth and time-delay settings should be made recognizing the interdependence of these two parameters.

Regulator configuration

The control is designed to operate on wye (star)connected and delta-connected regulators. Regulators connected line-to-ground (wye) develop potentials and currents suitable for direct implementation in the control.

Regulators connected line-to-line (delta) develop a potentialto-current phase shift which is dependent upon whether the regulator is defined as leading or lagging. The phase shift must be known by the control to permit accurate calculations for correct operation. This is accomplished by entering the proper option at FC 41: Wye, Delta Lagging, or

Delta Leading.

Time delay

The time delay is the period of time (in seconds) that the control waits from when the voltage first goes out-of-band to the time when a tap change is issued. If a rapid response is required, a shorter setting should be used. If several devices on the same line are to be coordinated (cascaded), different time-delay settings will be required to allow the proper devices to operate in the desired sequence.

Proceeding from the source, each device should have a longer time delay than the preceding device. A minimum

15-second difference between regulators located on the same phase on the same feeder is recommended. The delay allows the upstream device to perform its operations prior to the downstream device reacting. The time-delay setting of a voltage-minimizing, activated capacitor control should be set the same as a regulator control. Alternate time delays are available with the voltage limiting feature.

Refer to the Voltage Limiting section of this manual.

Control operating modes

The CL-6 control supports three modes in which the control responds to out-of-band conditions, permitting use of the mode that best fits the application. The three modes are

Sequential, Time Integrating, and Voltage Averaging. The mode setting can be selected by scrolling within FC 42 or through Settings > Configuration in the menu structure.

Sequential mode

This is the standard mode of response. When the load voltage goes out-of-band, the time-delay circuit is activated.

At the end of the time-out, a tap change is initiated. After each tap change, a 2-second pause occurs to permit the control to sample the voltage again. This sequence continues until the voltage is brought into band, at which time the timing circuit is reset. Whenever the voltage goes in-band, the timer is reset.

26 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Time-integrating mode

When the load voltage goes out-of-band, the time-delay circuit is activated. At the end of the time-out, a tap change is initiated. After each tap change, a 2-second pause occurs to permit the control to sample the voltage again. If the voltage is still out-of-band, another tap change is performed.

This sequence continues until the voltage is brought into band. When the voltage goes in-band, the timer is decremented at the rate of 1.1 seconds for every second elapsed, until it reaches zero.

Voltage-averaging mode

When the load voltage goes out-of-band, the time-delay circuit is activated. During this time-delay period, the microprocessor monitors and averages the instantaneous load voltage. It then computes the number of tap changes required to bring the average voltage back to the set voltage level. When the time-delay period is complete, the computed number of tap changes are performed without any delay between them, up to a maximum of five consecutive tap changes, to avoid an accumulative error. The timer is not reset on voltage excursions in-band unless the voltage stays in-band for at least ten continuous seconds.

An error-averaging characteristic is inherent with the voltageaveraging mode.

Note: To permit sufficient time for the microprocessor to average the voltage, the time-delay period must be 30 seconds or longer. If the time delay is set for less than

30 seconds, the control ignores the setting and uses

30 seconds.

System line voltage

The control performs ratio correction in the firmware, and, consequently, the primary voltage must be entered for the control to perform this calculation. This value is simply the nominal single-phase voltage supplied across the L and

SL terminals. Regulators shipped from the factory are set for the voltage indicated by the pin on the nameplate, and this value is programmed into the control. If the regulator is installed on any other system voltage, this system voltage must be entered for proper operation.

FC 6. The voltage test terminals will continue to show the voltage as applied to the control from the RCT.

Current transformer primary rating

The control is designed for 200 mA (full scale) as the rated

CT current and will meter to 400 mA (200% load) with no loss of accuracy. Ratio correction is performed by the firmware, and, consequently, the CT primary rating must be entered. The CT primary rating is available on the regulator nameplate.

EXAMPLE: If a CT ratio 400/0.2 is indicated on the nameplate, then 400 must be entered at FC 45.

Delta-connected (line-to-line connected) regulators

When a regulator is connected line-to-line, the phase angle of the line current is 30 degrees displaced from the voltage impressed across the regulator. Setting the Regulator

Configuration, FC 41, correctly, the correct relationship between the voltage and current is established. Setting the regulator Configuration to the incorrect delta value (lagging instead of leading, or vice versa), the phase angle will be in error 60 degrees. Below are considerations concerning deltaconnected regulators:

•

The basic decision-making of the control when line-drop compensation is not used is not affected by the phase angle; therefore, operation will be correct even if FC 41 is set to either of the two incorrect values. This is true for forward and reverse operation.

If line-drop compensation is used, the scaling of the R and X values is controlled by FC 41; therefore, it is important to correctly set FC 41 for the compensated voltage to be set correctly.

•

The following metering parameters will be correct only if the Regulator Configuration is correctly set: power factor, kVA, kW, kvar, demand kVA, demand kW, and demand kvar.

N ote: The kVA, kW, kvar, demand kVA, demand kW, and demand kvar use the line-to-line voltage; therefore, they display the value at the regulator not on any one feeder. To determine the total three-phase value of any one of these parameters, each regulator value must be divided by √3 (1.732) before adding the three together.

Potential transformer ratio

Since the control performs ratio correction in the firmware, the PT ratio for the voltage-sensing supply must be entered for the control to perform this calculation. The ratio to be programmed in the control is the OVERALL PT RATIO, as shown on the regulator nameplate for every applicable system voltage for the particular regulator. The PT ratio, which corresponds to the regulator’s rated voltage, is set by the factory. If the regulator is installed on any other system voltage, the corresponding PT ratio must also be entered for proper operation. This value includes the correction performed by the ratio-correcting transformer (RCT) on the back panel of the control enclosure. The voltage from the

RCT is normally corrected to 120 V. However, when this voltage is other than 120 V, the control will calibrate the input voltage to a 120 V base and 120 V will be displayed at

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 27

Section 5: Control programming

Use the front keypad to program the control. A Quik-Start™ setup is given for programming for basic regulation. Refer to the Control Front Panel section of this manual for information on using the front panel.

Note: After turning on the control and the LCD displays

PASS, press Escape for further keypad use.

Control functions with corresponding control function codes are accessed via the keypad. The menu system is structured with a main menu (Level 1), a sub-menu (Level 2), and parameters (Level 3). These parameters and other text information are displayed on the LCD screen.

Refer to Table 5-2 for the three-level, nested menu of functions and parameters.

Refer to Table 5-3 for a numerical listing of Function Codes and corresponding menu and parameter information.

Multiple menu items with the same function code are allowed; the first menu item listed is then the main function called up when that function code is entered at the keypad.

Access multiple menu items within the same function code with the  scrolling keys.

Quik-Start setup

Refer to Table 5-1 for a quick start up for basic regulation.

Please note the following Function Code information when using the Quik-Start settings.

99 Security Function Code and password needs to be applied before changes can be made to parameters.

39 Source-Side Voltage must be on for Reverse Power

Flow operation if source-side calculations are to be used instead of an internal differential potential transformer to determine source-side voltage.

140 Regulator Type A, B, C, or D needs to be set for Type

A (Straight Design), Type B (Inverted Design), Type

C (Type TX for regulators rated at 2.5 kV and greater than 875 A), or Type D (Type AX for regulators rated at 5.0 or 7.53 kV and greater than 875 A) when FC 39 is on.

41 Regulator Configuration must be programmed when a control change-out is required.

43 System Line Voltage must be programmed when a control change-out is required.

44 Overall PT Ratio must be programmed when a control change-out is required.

45 CT Primary Rating must be programmed when a control change-out is required.

49 Tap-Changer Section must be programmed when a control change-out is required.

50 Calendar/Clock must be programmed when a control change-out is required or if power has been lost for more than 24 hours.

69 Blocking Status must be set to Normal for the regulator to operate in the automatic mode.

28 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

043

044

045

049

039

140

051

052

053

054

055

Configurations

041

042

Table 5-1. Quik-Start Set-Up for Basic Regulation

Function Code

Security

099

Description

Security

Forward Settings

001

002

003

004

005

Reverse Settings

056

Forward Set Voltage

Forward Bandwidth

Forward Time Delay

Forward Line Drip Comp. Resistance

Forward Line Drip Comp. Reactance

Reverse Sensing Mode

Source Voltage Calculation

Regulator Type

Reverse Set Voltage

Reverse Bandwidth

Reverse Time Delay

Reverse Line Drip Comp. Resistance

Reverse Line Drip Comp. Reactance

Regulator Configuration

Control Operation Mode

System Line Voltage

Overall P.T. Ratio

C.T. Primary Rating

Tap-Changer Type

050

069

Voltage Reduction

070

072

073

074

075

076

077

Voltage Limiter

080

081

082

System Calendar and Clock

Auto Operation Blocking Status

Voltage Reduction Mode

Local/Digital Reduction Value

Remote #1 Value

Remote #2 Value

Remote #3 Value

# of Pulse Reduction Steps

% of Voltage Red Per Pulse Step

Voltage Limiter Mode

High Voltage Limit

Low Voltage Limit

Instructions

Function, 99, Enter, Password (32123), Enter

Function, 1, Enter, Edit, Value, Enter

Function, 2, Enter, Edit, Value, Enter

Function, 3, Enter, Edit, Value, Enter

Function, 4, Enter, Edit, Value, Enter

Function, 5, Enter, Edit, Value, Enter

Function, 56, Enter, Scroll - Locked Forward; Locked Reverse; Reverse Idle;

Bi-Directional; Neutral Idle; Co-generation; React Bi-directional, Enter

Function, 39, Enter, Edit, Scroll - On or Off, Enter

Function, 140, Enter, Edit, Scroll - Type A; Type B; Type C; Type D, Enter

Function, 51, Enter, Edit, Value, Enter

Function, 52, Enter, Edit, Value, Enter

Function, 53, Enter, Edit, Value, Enter

Function, 54, Enter, Edit, Value, Enter

Function, 55, Enter, Edit, Value, Enter

Function, 41, Enter, Edit, Scroll - Wye; Delta Lag; Delta Lead, Enter

Function, 42, Enter, Edit, Scroll - Sequential; Time-Integrating; Voltage-

Averaging, Enter

Function, 43, Enter, Edit, Value, Enter

Function, 44, Enter, Edit, Value, Enter

Function, 45, Enter, Edit, Value, Enter

Function, 49, Enter, Edit, Scroll - Cooper QD8; Cooper QD5; Cooper QD3;

Cooper Spring Drive; Cooper Direct Drive; Siemens; General Electric;

Howard; LTC-Reinhausen, Enter

Function, 50, Enter, Edit, Month, Day, Year, Hour, Minute, Enter

Function, 69, Enter, Edit, Scroll - Normal; Blocked, Enter

Function, 70, Enter, Edit, Scroll - Off; Local/Digital Remote; Remote/Latch,

Remote/Pulse, Enter

Function, 72, Enter, Edit, Value, Enter

Function, 73, Enter, Edit, Value, Enter

Function, 74, Enter, Edit, Value, Enter

Function, 75, Enter, Edit, Value, Enter

Function, 76, Enter, Edit, Value, Enter

Function, 77, Enter, Edit, Value, Enter

Function, 80, Enter, Edit, Scroll - Off; High Limit Only; High/Low Limit, Enter

Function, 81, Enter, Edit, Value, Enter

Function, 82, Enter, Edit, Value, Enter

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 29

Function menu

Refer to Table 5-2 for the three levels of the nested menu structure: Main Menu, Sub-Menu, and Parameter.

Table 5-2. Function Menu

Level 1 Main Menu

*Settings

Level 2 Sub-Menu

*Forward Direction

*Features

*Reverse Direction

*Configuration

*Calendar/Clock

_Menu System

*Auto-Block Status

*Reverse Power Mode

*Source Side,

Voltage Calculation

*Voltage Limiter

*Voltage Reduction

Parameter

Forward Set Voltage

Forward Bandwidth

Forward Time Delay

Forward Line Drop Comp. Resistance

Forward Line Drop Comp. Reactance

Reverse Set Voltage

Reverse Bandwidth

Reverse Time Delay

Reverse Line Drop Comp. Resistance

Reverse Line Drop Comp. Reactance

Regulator Identification

Regulator Type

Tap Changer Type

Regulator Configuration

Control Operating Mode

System Line Voltage

Overall P.T. Ratio

C.T. Primary Rating

Demand Time Interval

P.I. ADD-AMP, High Limit

P.I. ADD-AMP, Low Limit

Vin P.T., Configuration

System Calendar and Clock

Language Selection

Date Format

Time Format

Auto Operation, Blocking Status

Reverse Sensing Mode

Reverse Current, Sense Threshold

Source Voltage Calculation

Voltage Limiter Mode

High Voltage Limit

Low Voltage Limit

Voltage Reduction Mode

Reduction in Effect

Local/Digital Reduction Value

Remote #1 Value

30 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Code

001

140

049

041

042

043

044

045

046

144

145

146

050

141

142

143

069

056

057

052

053

054

055

040

002

003

004

005

051

039

080

081

082

070

071

072

073

TABLE 5-2. Function Menu (continued)

Level 1 Main Menu

*Features, cont.

Level 2 Sub-Menu

*Voltage Reduction, cont.

*Tap to Neutral

* Soft ADD-AMP™

*Alternate Config

*Leader/Follower

*Communications

Parameter

Remote #2 Value

Remote #3 Value

# of Pulse Reduction Steps

% of Voltage Red Per Pulse Step

Tap to Neutral

Soft ADD-AMP Limits

Soft ADD-AMP High Limits Soft ADD-AMP Low Limits

Alternate Configuration

LoopShare Communications

LoopShare Comms State

LoopShare Comms Port

LoopShare Comms Table Assignment

LoopShare Comms Tx Delay

LoopShare Comms Timeout

Leader/Follower

Leader/Follower State

Leader/Follower Designation

Follower Devices Configured

Leader/Follower Tap Wait Timer

Leader/Follower Timeout

Leader/Follower Retry Delay

Leader/Follower Retries

Leader/Follower Monitor

Com Port #1 Protocol

Com Port #1 Speed

Com Port #1 Sync Time

Com Port #1 DNP Master Adrs

Com Port #1 DNP Remote Adrs1

Com Port #1 DNP Remote Adrs2

Com Port #1 2179 Remote Adrs

Com Port #1 Handshake Mode

Com Port #1 Tx Enable Delay

Com Port #1 Tx Disable Delay

Com Port #1 2179 Ordinal Map

Com Port #1 DNP Data Dict

Com Port #2 Protocol

Com Port #2 Speed

Com Port #2 Sync Time

Com Port #2 DNP Master Adrs

Com Port #2 DNP Remote Adrs1 a Settings for Com Port #1 also apply to Com Port #3.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

416

417

418

420

410

411

413

414

415

402

403

404

405

450

451

400

401

170

079

176

Code

074

075

076

077

161

162

163

164

066a

067a

266

267

160

064a

065a

060a

061a

062a

063a

TABLE 5-2. Function Menu (continued)

Level 1 Main Menu

*Features, cont.

Level 2 Sub-Menu

*Communications, cont

*Calibration

*Compact Flash

Parameter

Com Port #2 DNP Remote Adrs2

Com Port #2 2179 Remote Adrs

Com Port #2 Handshake Mode

Com Port #2 Tx Enable Delay

Com Port #2 Tx Disable Delay

Com Port #2 2179 Ordinal Map

Com Port #2 DNP Data Dict

Voltage Calibration

Current Calibration

Reset Calibration

CompactFlash Data Writer

CompactFlash Load Custom

CompactFlash Load Std Config

CompactFlash Save Custom Cfg

CompactFlash Save Std Config

CompactFlash Format CF Card

CF Load Custom Basic Config

CF Load Standard Basic Config

CF Save Custom Basic Config

CF Save Standard Basic Config

CF Load Custom AdvFeat Config

CF Load standard AdvFeat Config

CF Save Custom AdvFeat Config

CF Save Standard AdvFeat Config

CF Load Custom Comms Config

CF Load Standard Comms Config

CF Save Custom Comms Config

CF Save Standard Comms Config

363

364

365

366

359

360

361

362

367

368

353

354

355

357

358

350

351

352

047

048

150

167

268

269

Code

164

165

166

32 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-2. Function Menu (continued)

Level 1 Main Menu

*Features, cont.

*Counters

*Metering

Level 2 Sub-Menu

_ Security Access

*Operations Counter

*Instantaneous

*Forward Demand

Parameter

Security Override

Security Code Level 1

Security Code Level 2

Security Code Level 3

Total Operations

Last Counter Change

Enable Interval Counters

Last 24 Hours Operations

Last 30 Days Operations

Current Month Operations

Last Month Operations

Current Year Operations

Last Year Operations

Load Voltage Secondary

Source Voltage Secondary

Comp. Voltage Secondary

Load Current Primary

Load Voltage Primary

Source Voltage Primary

Present Tap Position

Percent Regulation

Power Factor kVA Load kW Load kvar Load

Line Frequency

Voltage THD

Voltage, 2nd–15th Harmonic

Current THD

Current, 2nd–15th Harmonic

Energy kW-hour Forward

Energy kW-hour Reverse

Energy kvar-hour Forward

Energy kvar-hour Reverse

Forward Load Voltage High

Forward Load Voltage Low

Forward Load Voltage Present

Fwd Compensated Voltage High

Fwd Compensated Voltage Low

Fwd Compensated Voltage Present

Forward Load Current High

Forward Load Current Low

Forward Load Current Present

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

014

015

016

017

018

019

125

126

011

012

112

013

007

008

009

010

021

022

020

021

102

103

104

105

000

100

107

101

106

006

Code

092

096

097

098

TABLE 5-2. Function Menu (continued)

Level 1 Main Menu

*Metering, cont.

Level 2 Sub-Menu

*Forward Demand, cont.

*Reverse Demand

Parameter

Power Factor at Max Forward kVA

Power Factor at Min Forward kVA

Forward kVA Load High

Forward kVA Load Low

Forward kVA Load Present

Forward kW Load High

Forward kW Load Low

Forward kW Load Present

Forward kvar Load High

Forward kvar Load Low

Forward kvar Load Present

Maximum Tap Position

Maximum % Boost

Minimum Tap Position

Maximum % Buck

Forward Source Voltage High

Forward Source Voltage Low

Forward Source Voltage Present

Reverse Load Voltage High

Reverse Load Voltage Low

Reverse Load Voltage Present

Rev Compensated Voltage High

Rev Compensated Voltage Low

Rev Compensated Voltage Present

Reverse Load Current High

Reverse Load Current Low

Reverse Load Current Present

Power Factor at Max. Reverse kVA

Power Factor at Min. Reverse kVA

Reverse kVA Load High

Reverse kVA Load Low

Reverse kVA Load Present

Reverse kW Load High

Reverse kW Load Low

Reverse kW Load Present

Reverse kvar Load High

Reverse kvar Load Low

Reverse kvar Load Present

Reverse Source Voltage, High

Reverse Source Voltage, Low

Reverse Source Voltage, Present

Master Reset _Master Reset

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

035

036

033

034

035

036

032

033

030

031

127

028

128

029

026

027

029

030

024

025

Code

023

024

036

037

038

TABLE 5-2. Function Menu (continued)

Level 1 Main Menu

*Alarms/Events

*Diagnostics

Level 2 Sub-Menu

*Alarms Active

Unacknowledged

*Alarms Active

Acknowledged

_Events

*Control

*Communications

*Maintenance

_Metering PLUS

Parameter

(Unacknowledged Active Alarms List)

(Acknowledged Active Alarms List)

(Events Log)

Firmware Version

Database Version

PLD Version

2179 Version

DNP Version

DNP Checksum

Self-Test

Com Port #1 Tx Messages

Com Port #1 Rx Messages

Com Port #1 Rx Errors

Com Port #2 Tx Messages

Com Port #2 Rx Messages

Com Port #2 Rx Errors

Contact Duty Cycle Monitor

PMT™ Mode A State

PMT Mode A Countdown Delay

PMT Mode A Time Delay

PMT Mode A Issue Test

PMT Mode B State

PMT Mode B Countdown Delay

PMT Mode B Time Delay

PMT Mode B Start Time

PMT Mode B Stop Time

PMT Mode B Max Deviation

PMT Mode B Designation

PMT Mode B Current Limit

PMT Mode B Issue Test

Comp. Voltage

Load Voltage

Load Current

Tap Position

LF TPI TRG STATUS

Reg TPI CompV BandE sV Src Load Comp

*Test LEDs

*Turn Display Off

No Items

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

325

326

327

322

323

324

302

303

320

321

333

300

301

–

328

–

262

263

264

265

192

193

091

260

261

–

089

189

190

191

Code

–

Function codes

Refer to Table 5-3 for a numerical listing of the function codes. The table accurately represents the display of each function code and identifies the security level for read, edit, and reset, the factory setting, and the low and high limits for keyed in entries. This is followed by a description and, where appropriate, a list of scrollable choices, examples, and related functions and features for each function code.

TABLE 5-3 Function Codes

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

0 Counters Operations

Counter

000 Total

Operations

XXXXX

0 3 NA NA 0 999999

• The total operations counter is activated by detecting tap-changer motor operation, which is determined by sensing current flow in the holding switch circuit.

• The total operations counter is written into non-volatile memory after every count.

• Access other operations counters at FC 100–FC 107.

1 Settings Forward Direction 001 Forward Set

Voltage

120.0 Volts

0 2 NA 120.0

100.0 135.0

• The forward set voltage is the voltage level to which the control will regulate, on the 120 V base, during forward power flow.

2 Settings Forward Direction 002 Forward

Bandwidth

2.0 Volts

0 2 NA 2.0

1.0

6.0

• The bandwidth is defined as the total voltage range, around the set voltage, which the control will consider as a satisfied

(in-band) condition, during forward power flow.

• Example: A bandwidth of 3.0 V and a set voltage of 120 V will establish a low edge of 118.5 V and a high edge of 121.5 V.

3 Settings Forward Direction 003 Forward

Time Delay

45 Sec

0 2 NA 45 5

• The time delay is the period of time that the control waits, from when the voltage first goes out-of-band to when a tap change is initiated, during forward power flow.

• See FC 42, Control Operating Mode.

180

4 Settings Forward Direction 001 Fwd Line Drop

Comp. Resistance

0.0 Volts

0 2 NA 0.0

-96.0

96.0

• The resistive line-drop compensation value is used to model the resistive line voltage drop between the regulator and the center of regulation.

• The control uses this parameter, in conjunction with the regulator configuration (FC 41) and the load current, to calculate and regulate to the compensated voltage (displayed at FC 8) during forward power flow.

36 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3 Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

5 Settings Forward

Direction

005 Fwd Line Drop

Comp. Reactance

0.0 Volts

0 2 NA 0.0

-96.0 96.0

• The reactive line-drop compensation value is used to model the reactive line drop voltage between the regulator and the center of regulation.

6 Metering Instantaneous 006 Load Voltage

Secondary

XXX.X Volts

0 NA NA NA NA NA

• This is the fundamental RMS voltage, referred to the secondary, which appears at the output (load) terminals of the regulator.

• Since ratio correction is performed by the firmware, this parameter is scaled according to the inputs at FC 43 (System Line

Voltage) and FC 44 (Overall PT Ratio).

• During reverse power operation, the control requires source voltage from a differential or source potential transformer or from the source voltage calculation (see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

7 Metering Instantaneous 007 Source Voltage

Secondary

XXX.X Volts

0 NA NA NA NA NA

• This is the fundamental RMS voltage, referred to the secondary, which appears at the input (source) terminals of the regulator.

• Since ratio correction is performed by the firmware, this parameter is scaled according to the inputs at FC 43 (System Line

Voltage) and FC 44 (Overall PT Ratio).

• During forward power operation, the control requires source voltage from a differential or source potential transformer or from the source voltage calculation (see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

8 Metering Instantaneous 008 Compensated

Volt. Secondary

XXX.X Volts

0 NA NA NA NA NA

• This is the calculated voltage at the center of regulation, referred to the secondary.

• This is based on the resistive compensation setting (FC 4 or FC 54), reactive compensation setting (FC 5 or FC 55), and the load current.

• This is the voltage that the regulator is regulating during either forward or reverse power flow.

9 Metering Instantaneous 009 Load Current

Primary

XXX.X A

0 NA NA NA NA NA

• This is the fundamental RMS current flowing in the primary circuit.

• This parameter is scaled according to the CT primary rating which is entered at FC 45.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 37

TABLE 5-3 Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

10 Metering Instantaneous 010 Load Voltage

Primary kV

XX.XX kV

11 Metering Instantaneous 011 Source Voltage

Primary kV

XX.XX kV

• This is the fundamental RMS voltage, referred to the primary, which appears at the output (load) terminals of the regulator.

• This is the fundamental RMS voltage, referred to the primary, which appears at the input (source) terminals of the regulator.

• Since ratio correction is performed by the firmware, this parameter is scaled according to the inputs at FC 43 (System Line

Voltage) and FC 44 (Overall PT ratio).

12 Metering Instantaneous 012 Present Tap

Position

0 3 NA NA -16 16

• This is the present position of the tap-changer.

• The tap position indication is synchronized at the neutral position, as indicated by the neutral light circuit. Tap positions are displayed from -16 to 16, corresponding to 16 Lower (regulator bucking) to 16 Raise (regulator boosting), respectively.

• See the Control Features: Tap Position section of this manual.

• See Percent Regulation, FC 112.

13 Metering Instantaneous 013 Power Factor 0 NA NA NA NA NA

X.XXX

• This is the power factor of the primary circuit, as represented by the phase difference between the line current and voltage.

• Lagging current, or inductive loads, are designated by an implied (+) sign, and leading current, or capacitive loads, are designated by a (-) sign. Refer to Figures 5-1 and 5-2.

Lagging

(+)

Reverse Power

I

Forward Power

I

Leading

(-)

Unity

I

E

I

E Unity

Leading

(-)

Figure 5-1. Reverse power vector diagram

Lagging

(+)

Figure 5-2. Forward power vector diagram.

38 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory Setting Key Entry Limit

Low High

14 Metering Instantaneous 014 kVA Load

XXXX.X kVA

0 NA NA NA NA NA

• This is the total kilovolt-amperes drawn by the load, as calculated by the product of the load-voltage primary kV (FC 10) times the primary load current (FC 9). See Figure 5-3.

kVA

q kW

Figure 5-3. Power Triangle

kvar kW=kVA cos q kvar=kVA sin q

15 Metering Instantaneous 015 kW Load 0 NA NA NA NA NA

XXXX.X kW

• This is the total kilowatts (true power) consumed by the load.

• This is calculated by the product of the power factor (FC 13) times the kVA load (FC 14). See Figure 5-3.

16 Metering Instantaneous 016 kvar Load 0 NA NA NA NA NA

XXXX.X kvar

• This is the total kilovolt-amperes reactive (reactive power) drawn by the load. The reactive power adds to losses on the line, yet does not do any work. See Figure 5-3.

17 Metering Instantaneous 017 Line Frequency 0 NA NA NA NA NA

XX.XX Hz

• This is the frequency of the power line, as measured by the control.

• The control is capable of operating on systems from 45 to 65 Hz with no loss of accuracy in its measurements.

18 Metering Instantaneous 018 Voltage THD 0 NA NA NA NA NA

XX.X %

• The total harmonic distortion (THD) is displayed after entering FC 18.

• The total harmonic distortion is computed as the RSS (square root of the sum of the squares) of the individual harmonic values.

• This is displayed as a percentage of the fundamental RMS voltage.

• Example: 120.0 V of 60 Hz fundamental (power line frequency), with a reading of 0.5 at the 7th harmonic (420 Hz), is 0.6 V

RMS.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 39

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

18 Metering Instantaneous 018 Voltage 2nd–15th

Harmonic

XX.X %

• The values of the 2nd through 15th harmonic are displayable.

• Use the arrow keys to scroll through the 2nd through 15th harmonic.

19 Metering Instantaneous 019 Current THD

0 NA NA NA NA NA

XXX.X %

• The total harmonic distortion (THD) is displayed after entering FC 19.

• The total harmonic distortion is computed as the RSS (square root of the sum of the squares) of the individual harmonic values.

• This is displayed as a percentage of the fundamental RMS voltage.

• Example: 200 A of 60 Hz fundamental (power line frequency), with a reading of 1.9 at the 5th harmonic (300 Hz), is 3.8 A

RMS.

19 Metering Instantaneous 019 Current 2nd–15th

Harmonic

XX.X %

0 NA NA NA NA NA

• The values of the 2nd through 15th harmonic are displayable.

• Use the arrow keys to scroll through the 2nd through 15th harmonic.

20 Metering Forward Demand 020 Forward Load

Voltage High

XXX.X Volts

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest secondary output voltage of the regulator (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the highest secondary output voltage is displayed.

20 Metering Forward Demand 020 Forward Load

Voltage Low

XXX.X Volts

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest secondary output voltage of the regulator (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the lowest load voltage is displayed.

20 Metering Forward Demand 020 Forward Load

Voltage Present

XXX.X Volts

0 NA NA NA NA NA

• This is the present reading of secondary output voltage of the regulator, as a demand value, according to the demand time interval at FC 46

40 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

21 Metering Forward Demand 021 Fwd Compensated

Voltage High

XXX.X Volts

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest value of the calculated secondary voltage at the center of regulation (since the last reset), as a demand value, according to the demand time interval at FC 46.

• The forward line-drop compensation settings for resistance and reactance (FC 4 and FC 5) are used in this calculation.

• Date and time of the occurrence of the highest compensated voltage is displayed.

21 Metering Forward Demand 021 Fwd Compensated

Voltage Low

XXX.X Volts

0 NA 1 NA NA NA

• This is the lowest value of the calculated secondary voltage at the load center (since the last reset), as a demand value, according to the demand time interval at FC 46.

• The forward line-drop compensation settings for resistance and reactance (FC 4 and FC 5) are used in this calculation.

• Date and time of the occurrence of the lowest compensated voltage is displayed.

21 Metering Forward Demand 021 Fwd Compensated

Voltage Present

XXX.X Volts

0 NA NA NA NA NA

• This is the present value of the calculated secondary output voltage of the load center, as a demand value, according to the demand time interval at FC 46.

• The forward line-drop compensation settings for resistance and reactance (FC 4 and FC 5) are used in this calculation.

22

Metering Forward Demand 022 Forward Load

Current High

XXX.X A

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest value of the load current (since last reset), as a demand value, according to the demand time interval at

FC 46.

• Date and time of the occurrence of the highest load current is displayed.

Metering Forward Demand 022 Forward Load

Current Low

XXX.X A

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest value of the load current (since last reset), as a demand value, according to the demand time interval at

FC 46.

• Date and time of the occurrence of the lowest load current is displayed.

NA 22 Metering Forward Demand 022 Forward Load

Current Present

XXX.X A

0 NA NA NA NA

• This is the present reading of the load current as a demand value, according to the demand time interval at FC 46.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 41

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

23 Metering Forward

Demand

023 Power Factor at

Max Forward kVA

X.XX

(Date / Time shown)

0 NA NA NA NA NA

• This is the instantaneous power factor of the load at the first time when the maximum kVA demand occurred, since last reset.

• Date and time of the occurrence of the highest maximum kVA demand is displayed.

• Note: This parameter is associated with the maximum kVA demand; therefore, it cannot be reset independent of that parameter.

23 Metering Forward

Demand

023 Power Factor at

Min Forward kVA

X.XX

(Date / Time shown)

0 NA NA NA NA NA

• This is the instantaneous power factor of the load at the first time when the minimum kVA demand occurred (since last reset).

• Date and time of the occurrence of the lowest minimum kVA demand is displayed.

• Note: This parameter is associated with the minimum kVA demand; therefore, it cannot be reset independent of that parameter

024 Metering Forward

Demand

024 Forward kVA Load High

XXXX.X kVA

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest value of the load kVA (since last reset), as a demand value, according to the demand time interval at

FC 46.

• Date and time of the occurrence of the highest kVA load is displayed.

24 Metering Forward

Demand

024 Forward kVA Load Low

XXXX.X kVA

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest value of the load kW (since last reset), as a demand value, according to the demand time interval at

FC 46.

• Date and time of the occurrence of the lowest kVA load is displayed.

24 Metering Forward

Demand

024 Forward kVA Load Present

XXXX.X kVA

0 NA NA NA NA NA

• This is the present value of the load kVA, as a demand value, according to the demand time interval at FC 46.

25 Metering

25 Metering

Forward

Demand

Forward

Demand

025 Forward

025 Forward kW Load High

XXXX.X kW

(Date / Time shown)

• This is the highest value of the load kW (since last reset), as a demand value, according to the demand time interval at

FC 46.

• Date and time of the occurrence of the highest kW load is displayed.

• This is the lowest value of the load kW (since last reset), as a demand value, according to the demand time interval at

FC 46.

• Date and time of the occurrence of the lowest kW load is displayed.

42 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

25 Metering Forward

Demand

025 Forward kW Load Present

XXXX.X kW

0 NA NA NA

• This is the present value of the load kW, as a demand value, according to the demand time interval at FC 46.

NA NA

26 Metering Forward

Demand

026 Forward kvar Load High

XXXX.X kvar

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest value of the load kvar (since last reset), as a demand value, according to the demand time interval at

FC 46.

• Date and time of when the lowest value occurred is displayed.

26 Metering Forward

Demand

026 Forward kvar Load Low

XXXX.X kvar

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest value of the load kvar (since last reset), as a demand value, according to the demand time interval at

FC 46.

• Date and time of the occurrence of the lowest kvar load displayed.

26 Metering Forward

Demand

026 Forward kvar Load Present

XXX.X kvar

0 NA NA NA NA NA

• This is the present value of the load kvar, as a demand value, according to the demand time interval at FC 46.

27 Metering Forward

Demand

027 Maximum Tap

Position

(Date / Time shown)

0 NA 1 NA NA

• This is the highest tap position that the regulator has reached since last reset.

• The maximum position and associated date and time can be reset via the reset key or via master reset, FC 38. This parameter is not reset by the drag-hand reset switch.

• Date and time of the occurrence of the maximum tap position is displayed.

28 Metering Forward

Demand

028 Minimum Tap

Position

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest tap position that the regulator has reached (since last reset).

• The minimum position and associated date and time can be reset via the reset key or via master reset, FC 38. This parameter is not reset by the drag-hand reset switch.

• Date and time of the occurrence of the minimum tap position is displayed.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 43

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

029 Metering Forward

Demand

029 Forward Source

Voltage High

XXX.X Volts

(Date / Time shown)

0 NA 1 NA NA NA

• This is the maximum source voltage of the regulator (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the highest source voltage is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

29 Metering

Forward

Demand

029 Forward Source

Voltage Low

XXX.X Volts

(Date / Time shown)

029 Forward Source

Voltage Present

XXX.X Volts

0 NA 1 NA NA NA

• This is the minimum source voltage of the regulator (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the lowest source voltage is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

Forward

Demand

0 NA NA NA NA NA

• This is the present value of the source voltage, as a demand value, according to the demand time interval at FC 46.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

30 Metering Reverse

Demand

030 Reverse Load

Voltage High

XXX.X Volts

(Date / Time shown)

0 NA 1 NA NA NA

• This is the maximum value of the secondary output voltage of the regulator during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the highest load voltage is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

30 Metering Reverse

Demand

030 Reverse Load

Voltage Low

XXX.X Volts

(Date /Time shown)

0 NA 1 NA NA NA

• This is the minimum value of the secondary output voltage of the regulator during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the lowest load voltage is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

30 Metering Reverse

Demand

030 Reverse Load

Voltage Present

XXX.X Volts

0 NA NA NA NA NA

• This is the present value of the secondary output voltage of the regulator during reverse power flow, as a demand value, according to the demand time interval at FC 46.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory Setting

Key Entry Limit

Low High

31 Metering Reverse Demand 031 Rev Compensated

Voltage High

XXX.X Volts

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest value of the calculated secondary voltage at the center of regulation during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• The reverse line-drop compensation settings for resistance and reactance (FC 54 and FC 55) are used in this calculation.

• Date and time of the occurrence of the highest compensated is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

31 Metering Reverse Demand 031 Rev Compensated

Voltage Low

XXX.X Volts

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest value of the calculated secondary voltage at the load center during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• The reverse line-drop compensation settings for resistance and reactance (FC 54 and FC 55) are used in this calculation.

• Date and time of the occurrence of the lowest compensated voltage is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

31 Metering Reverse Demand 031 Rev Compensated

Voltage Present

XXX.X Volts

0 NA NA NA NA NA

• This is the present value of the calculated secondary load center during reverse power flow), as a demand value, according to the demand time interval at FC 46.

• The reverse line-drop compensation settings for resistance and reactance (FC 54 and FC 55) are used in this calculation.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

32 Metering Reverse Demand 032 Reverse Load

Current High

XXX.X A

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest value of the load current during reverse power flow (since the last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the highest load current is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

32 Metering Reverse Demand 032 Reverse Load

Current Low

XXX.X A

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest value of the load current during reverse power flow (since the last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the lowest load current is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 45

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

32 Metering Reverse Demand 032 Reverse Load

Current Present

XXX.X A

0 NA NA NA NA NA

• This is the present value of the load current during reverse power flow, as a demand value, according to the demand time interval at FC 46.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

33 Metering Reverse Demand 033 Power Factor at

Max Reverse kVA

X.XX

(Date / Time shown)

0 NA NA NA NA NA

• This is the instantaneous power factor of the load at the first time the maximum kVA demand occurred (since the last reset), during reverse power flow.

• Note: This parameter is associated with the maximum kVA demand; therefore, it cannot be reset independent of that parameter.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

0 NA NA NA NA NA 33 Metering Reverse Demand 033 Power Factor at

Min Reverse kVA

X.XX

(Date / Time shown)

• This is the instantaneous power factor of the load at the first time the minimum kVA demand occurred during reverse power flow since last reset.

• Note: This parameter is associated with the minimum kVA demand; therefore, it cannot be reset independent of that parameter.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

34 Metering Reverse Demand 034 Reverse kVA Load High

XXXX.X kVA

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest value of the load kVA during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the highest kVA load is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

34 Metering Reverse Demand 034 Reverse kVA Load Low

XXXX.X kVA

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest value of the load kVA during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence the lowest kVA load is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

46 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

34 Metering Reverse Demand 034 Reverse kVA Load Present

XXXX.X kVA

0 NA NA NA NA NA

• This is the present value of the load kVA during reverse power flow, as a demand value, according to the demand time interval at FC 46.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

35 Metering Reverse Demand 035 Reverse kW Load High

XXXX.X kW

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest value of the load kW during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the highest kW load is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

35 Metering Reverse Demand 035 Reverse kW Load Low

XXXX.X kW

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest value of the load kW during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the lowest kW load is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

35 Metering Reverse Demand 035 Reverse kW Load Present

XXXX.X kW

0 NA NA NA NA NA

• This is the present value of the load kW during reverse power flow, as a demand value, according to the demand time interval at FC 46.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

36 Metering Reverse Demand 036 Reverse kvar Load High

XXXX.X kvar

(Date / Time shown)

0 NA 1 NA NA NA

• This is the highest value of the load kvar during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the highest kvar load is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 47

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

36 Metering Reverse Demand 036 Reverse kvar Load Low

XXXX.X kvar

(Date / Time shown)

0 NA 1 NA NA NA

• This is the lowest value of the load kvar during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the lowest kvar load is displayed.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

36 Metering Reverse Demand 036 Reverse kvar

Load Present

XXXX.X kvar

NA NA NA NA NA NA

• This is the present value of the load kvar during reverse power flow, as a demand value, according to the demand time interval at FC 46.

• The control requires source voltage from a differential or source potential transformer or from the source voltage calculation

(see FC 39) to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

37 Metering Reverse Demand 037 Reverse Source

Voltage High

XXX.X Volts

(Date / Time shown)

0 NA 1 NA NA

• This is the highest value of the primary input voltage of the regulator during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the highest source voltage is displayed.

NA 37 Metering Reverse Demand 037 Reverse Source

Voltage Low

XXX.X Volts

(Date / Time shown)

0 NA 1 NA NA

• This is the lowest value of the primary input voltage of the regulator during reverse power flow (since last reset), as a demand value, according to the demand time interval at FC 46.

• Date and time of the occurrence of the lowest source voltage is displayed.

37 Metering Reverse Demand 037 Reverse Source

Voltage Present

XXX.X Volts

0 NA NA NA NA

• This is the present value of the primary input voltage of the regulator during reverse power flow, as a demand value, according to the demand time interval at FC 46.

48 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

38 Metering Master Reset 038 Master Reset

(PRESS RESET)

0 NA 1 NA NA NA

• Only demand metering, forward and reverse, and maximum and minimum buck, boost, and tap position values (and associated time/date) are reset to their corresponding present demand values at FC 38: press Edit/Reset, then press

Enter.

• If the present demand value or tap position is in an invalid state, indicated by dashes, the high and low values will also become invalid and will display dashes.

• Individual maximum and minimum values and their date/time stamps (see FC 20–FC 37, FC 127, and FC 128) may be reset to the present demand value: access the appropriate function code on display, press Edit/Reset, then press Enter.

• Successful master reset is indicated by the word (Done) appearing on the display.

• See the Control Programming: Special Functions section of this manual.

39 Features Source Side

Voltage

Calculation

039 Source Voltage

Calculation

0 2 NA On NA NA

• The source side voltage is calculated based on tap position and the regulator type (see FC 140).

• Options include:

• source voltage calculator off • source voltage calculator on

• The source voltage calculation provides accuracy to ±1.5% maximum error.

• When the calculated values are used, the LCD will display (Calculated).

• If source voltage is sensed, it will take precedence over the calculated voltage.

40 Settings Configuration 040 Regulator

Identification

12345

0 2 NA 12345 1 32766

• This provision is made for entry of a number to uniquely identify each control.

• The serial number of the control (as shown on the decal on the back of the front panel) was entered at FC 40 at the factory.

However, any other number within the limits defined above may be chosen instead.

• When using flashcards for file transfers, the regulator identification is included in the transferred files Refer to the Advanced

Features: Compact Flash Card section of this manual.

41 Settings Configuration 041 Regulator

Configuration

Wye

0 2 NA See

Note

NA NA

• The control is designed to operate on wye-connected or delta-connected three-phase systems. Options include:

• Wye (star) • Delta-lagging • Delta-leading

• Regulators connected line-to-ground (wye or star) develop potentials and currents suitable for direct implementation in the control.

• Regulators connected line-to-line (delta) develop a potential-to-current phase shift which is dependent upon whether the regulator is defined as leading or lagging. This phase shift must be known by the control to permit accurate calculations for correct operation.

• See the Initial Control Programming section of this manual to determine whether the regulator is leading or lagging.

• Note: See Reference Bulletin R225-10-1 for a discussion of delta connections.

• The LCD will display dashes if this is not set correctly

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 49

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory Setting

Key Entry Limit

Low High

42 Settings Configuration 042 Control

Operating Mode

Sequential

0 2 NA Sequential NA

• The manner in which the control responds to out-of-band conditions is selectable by the user. The appropriate mode is selected by entering one of the corresponding choices:

• Sequential (Standard) • Time Integrating • Voltage Averaging

• For detailed information, see the Control Operation: Control Operating Modes section of this manual.

43 Settings Configuration 043 System Line

Voltage

7200 Volts

0 2 NA See Note 1200 36000

• The control is designed to operate on primary system voltages from 1200 V to 36000 V.

• Ratio correction is performed by the firmware, and, consequently, the primary voltage must be entered for this calculation.

• Example: A regulator installed on a 7200 V system (line-to-neutral) would have 7200 entered at FC 43.

• Example: A regulator installed open or closed delta on an 11000 V system (line-to-line) would have 11000 entered at

FC 43.

• Note: Ratio correction is performed by the firmware, and, consequently the system line voltage rating must be entered. The line voltage rating is available on the regulator nameplate and is summarized in Tables 10-1 and 10-2 for most regulator ratings.

44 Settings Configuration 044 Overall P.T.

Ratio

20.0

0 2 NA See Note 10.0

300.0

• The control is designed to operate on primary system voltages from 1200 V to 36000 V.

• Ratio correction is performed by the firmware, and, consequently, the overall potential transformer (PT) ratio must be entered for this calculation.

• Note: The overall PT ratio is available on the regulator nameplate and is summarized in Tables 10-1 and 10-2 for most regulator ratings.

• Example: A 13800 V regulator, installed on a 7970 V system, would have 7970 entered at FC 43 and 63.7 entered at FC 44.

The control will then define the 125.1 V (output from the back panel ratio correction transformer) as the 120-base voltage, and 120 V is displayed at FC 6.

45 Settings Configuration 045 C.T. Primary

Rating

100 Amps

0 2 NA 100 25 2000

• The control is designed for a 200 mA as the rated current transformer (C.T.) output current, and will meter to 400 mA (200% load) with no loss of accuracy.

• Ratio correction is performed by the firmware and consequently the C.T. primary rating must be entered. The C.T. primary rating is available on the regulator nameplate. EXAMPLE: A 7620 V, 328A regulator (250 kVA) would have a C.T. rating of

400:0.2 and therefore, 400 is entered at FC 45.

46 Settings Configuration 046 Demand Time

Interval

15.0 Minutes

0 2 NA 15.0

0.5

60.0

• This is the time period during which the demand integral is performed for all demand readings (FC 20–FC 36).

• Demand readings are useful because they represent the values which produce actual heating effects in electrical equipment and they do not respond to the continuous fluctuations which occur on the line.

50 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

47 Features Calibration 047 Voltage

Calibration

110.0 Volts

0 3 NA See Note 110.0 130.0

• The voltage which the control actually measures is displayed at FC 47. In the example given in FC 44 description, FC 47 would indicate 125.1 V when FC 6 indicated 120 V.

• To calibrate, this value is compared to a reference voltmeter and, if different, is changed to display the correct value.

• Note: A default calibration factor is programmed into non-volatile memory at the factory and should not be necessary in the field.

• See the Troubleshooting: Control Calibration section of this manual.

48 Features Calibration 048 Current

Calibration

100.0 mA

0 3 NA See Note 100.0 400.0

• The current which the control actually measures, in mA, is displayed at FC 48.

• The control is designed for 200 mA as the rated CT secondary output current and will meter to 400 mA (200% load) with no loss of accuracy.

• To calibrate, this value is compared to a reference ammeter and, if different, is changed to display the correct value.

• Note: A default calibration factor is programmed into non-volatile memory at the factory and should not be necessary in field.

• See the Troubleshooting: Control Calibration section of this manual.

49 Settings Configuration 049 Tap Changer Type 0 2 NA See Note NA NA

Cooper QD8

• This function code identifies the tap-changer type. See Service Information S225-10-10. Changing this function code changes the control’s sampling rate to accommodate varying tap-changer types.

• Options include:

• Cooper QD8 • Cooper QD5

• Cooper Direct Drive • Siemens

• Cooper QD3

• General Electric

Note: The LCD will display "_ _ _ _" (Invalid) if this is set to "None".

• Cooper Spring Drive • LTC Reinhausen

• Howard • None

50 Settings Calendar/Clock 050 System Calendar and Clock

(Date / Time shown)

0 3 NA

• The system date and time utilizes the MM/DD/YYYY and 24-hour format.

• The default is Jan. 1, 1970.

• Refer to the Control Features: Calendar/Clock section of this manual for more information.

NA NA NA

51 Settings Reverse

Direction

051 Reverse

Set Voltage

120.0 Volts

0 2 NA 120.0

100.0 135.0

• The set voltage is the voltage level to which the control will regulate, on the 120 V base, during reverse power flow.

• See FC 1 and the Control Features: Reverse Power Operation section of this manual.

52 Settings Reverse

Direction

052 Reverse

Bandwidth

2.0 Volts

0 2 NA 2.0

1.0

6.0

• The bandwidth is defined as that total voltage range, around the set voltage, which the control will consider as a satisfied (inband) condition, during reverse power flow.

• Example: A bandwidth of 3.0 V and a set voltage of 120.0 V will establish a low limit of 118.5 V and a high limit of 121.5 V.

• See FC 2–FC 5 and the Control Features: Reverse Power Operation section of this manual.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 51

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

53 Settings Reverse

Direction

053 Reverse

Time Delay

45 Seconds

0 2 NA 45 5 180

• The time delay is the period of time (in seconds) that the control waits, from the time when the voltage first goes out-ofband to the time when a tap change is initiated, during reverse power flow.

• See FC 2–FC 5 and the Control Features: Reverse Power Operation section of this manual.

54 Settings Reverse

Direction

054 Rev Line Drop

Comp. Resistance

0.0 Volts

0 2 NA 0.0

-96.0

96.0

• The resistive line-drop compensation value is used to model the resistive line voltage drop between the regulator and the center of regulation.

• The control uses this parameter, in conjunction with the regular configuration (FC 41) and the load current, to calculate and regulate to the compensated voltage (displayed at FC 8) during the reverse power flow.

• See FC 2–FC 5 and the Control Features: Reverse Power Operation section of this manual.

55 Settings Reverse

Direction

055 Rev Line Drop

Comp. Reactance

0.0 Volts

0 2 NA 0.0

-96.0

96.0

• The reactive line-drop compensation value is used to model the reactive line drop voltage between the regulator and the center of regulation.

• See FC 2– FC 5 and the Control Features: Reverse Power Operation section of this manual.

56 Features Reverse Power

Mode

056 Reverse Sensing

Mode

Locked Forward

0 2 NA Locked NA

• The control offers seven different response characteristics for reverse power flow operation, selectable by the user.

• Options include:

• Locked Forward • Locked Reverse

• Co-generation

• Reverse Idle

• Reactive Bi-directional

• Bi-directional

• Neutral Idle

• The current threshold set at FC 57 must be exceeded for the reverse sensing mode to function.

• See the Control Features: Reverse Power Operation section of this manual.

57 Features Reverse Power

Mode

057 Reverse Current

Sense Threshold

0 2 NA 1 1 5

• This is the current threshold at which the control switches operate, either from forward to reverse, or reverse to forward.

• This threshold is programmable as a percentage of the rated CT primary rating.

• Example: A 328 A regulator utilizing a CT with a 400 A primary rating and with a 3% threshold value would have a threshold of 12 A.

• The metering of the control switches on a fixed 1% threshold, completely independent from FC 57.

• See the Control Features: Reverse Power Operation section of this manual.

52 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

60 Features Communications 060 Com Port #1

Protocol

0 2 NA

DNP

• This function defines which resident protocol of the control will be used on Com1/Com3.

• Options include:

• DNP • 2179

• See the Control Features: Digital SCADA section of this manual.

DNP NA

61 Features Communications 061 Com Port #1

Speed

9600

0 2 NA

• The control microprocessor has two communications channels, each with selectable baud rates.

• Options for Com1/Com3 include:

• 300

• 4800

• 600

• 9600

• 1200

• 19200

• 2400

• 38400

9600 NA

62 Features Communications 062 Com Port #1

Sync Time

0 mSec

63 Features Communications 063 Com Port #1

DNP Master Adrs

1234

0 2 NA 0 0

• This defines the period of time, for Com1/Com3, the received data line must idle to assume the start of a request message.

• See the Control Features: Digital SCADA section of this manual.

0 2 NA 1234 0

• The control will send unsolicited responses to this master address for Com1/Com3.

64 Features Communications 064 Com Port #1

DNP Remote Adrs1

• This is the primary DNP remote address used by user.

• The DNP Remote Address 1 for Com1/Com3 is entered at FC 64.

0 2 NA 1 0

64 Features Communications 064 Com Port #1

DNP Remote Adrs2

65519

0 2 NA 65519

• This is the DNP remote address available for remote configuration. For more information, contact your Eaton representative.

• The DNP Remote Address 2 for Com1/Com3 is entered at FC 64.

65535

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 53

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

64 Features Communications 064 Com Port #1

2179 Remote Adrs

0 2 NA 1 0 2046

• This is the control SCADA 2179 Remote Address for Com1/Com3.

• Each control on the system can be uniquely addressed by the SCADA RTU or other communications device. For 2179, the options include:

• 0–2046 = Unique device address range. Controls with addresses in this range uniquely respond when the particular address is sent.

• All controls on the system listen and change as commanded, with no response, if a message is sent to address 2047.

• The control SCADA address for Com Port #1 is entered at FC 64.

• For 2179, the High Entry Limit is 2046.

65 Features Communications 065 Com Port #1

Handshake Mode

RTR without CTS

0 2 NA RTR without

CTS

NA NA

• FC 65 allows the user to select the appropriate method for control-to-SCADA message interaction (handshake mode) on Com1/

Com3.

• The transmit/receive handshaking mode allows adaptability to different types of communication system interfaces with the control. Options include:

• RTS without CTS - Request to Send (RTS) without Clear to Send (CTS) support

• RTS with CTS - Request to Send (RTS) with Clear to Send (CTS) support

• RTR without CTS- Ready to Receive (RTR) without Clear to Send (CTS) support

• RTR with CTS - Ready to Receive (RTR) with Clear to Send (CTS) support

• See FC 66 and FC 67 for programming of the Transmit Enable Delay and Transmit Disable Delay settings.

66 Features Communications 066 Com Port #1

Tx Enable Delay

0 mSec

0 2 NA 0 0 1000

• When the control is set for transmit control handshaking, the user may require a delay (in milliseconds) on Com1/Com3 between the time when the transmit enable is enabled to when data is transmitted.

• Example: If the transmit enable were used as a keying device for a transmitter or modem, a “warm-up“ period may be necessary before data can be transmitted.

• For more information, refer to the Advanced Control Features: Communications section of this manual.

67 Features Communications 067 Com Port #1

Tx Disable Delay

0 mSec

0 2 NA 0 0 1000

• When the control is set for transmit control handshaking, the user may require a delay (in milliseconds) on Com1/Com3 between the time when the data transmission is terminated and the transmit enable signal is disabled.

• See Figure 5-4.

Transmit

Enable On

Transmit

Enable Off

Data

Message

FC 66

Transmit

Enable

Delay On

FC 67

Transmit

Enable

Delay Off

Figure 5.4. Data transmission from the CL-6 control to the communication system for handshaking applications.

54 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

69 Features Auto Block

Status

069 Auto Operation

Blocking Status

Normal

0 2 NA Normal NA NA

• The control with communications options allows the user to completely control the regulator through the SCADA system.

The SCADA system may place the regulator in a blocked state, thus inhibiting any further tap-changer operation initiated by the control. Options include:

• Normal • Blocked

• Normal refers to normal automatic operation. Blocked refers to a state when automatic operation is inhibited.

• Example: This function can be used to perform a desired amount of voltage reduction and then disabling of the tap-changer

(inhibit additional operations) for an indefinite time period.

• The operator may change the state of this code by entering the level 2 security at the control and pressing the Edit/Reset key. If SCADA has the control blocked, the operator may override the SCADA system by changing FC 69 from blocked to normal, or, if the operator chooses to block automatic operation, FC 69 can be changed from normal to blocked.

• Refer to the Control Features: SCADA section of this manual for additional information concerning the SCADA interaction with the control.

70 Features Voltage

Reduction

070 Voltage

Reduction Mode

Off

0 2 NA

• The control has three voltage reduction modes available for user selection. Options include:

• Off • Local/Digital Remote • Remote - Latch • Remote - Pulse

• Refer to the Control Features: Voltage Reduction section of this manual.

Off NA NA

71 Voltage

Limiter

Voltage

Reduction

071 Reduction in

Effect

10.0 %

• This is the actual percentage of voltage reduction presently active.

• See the Control Features: Voltage Reduction section of this manual.

0 NA NA NA NA NA

72 Features

73 Features

Voltage

Reduction

Voltage

Reduction

072 Local/Digital

Reduction Value

0.0 %

073 Remote #1 Value

0.0 %

0.0

• Three levels of remotely activated latching voltage reduction are available.

• The percentage of voltage reduction to be performed is programmed at FC 72. Remote activation is then accomplished through SCADA communications.

0.0

10.0

• Three levels of remotely activated latching voltage reduction are available.

• The percentage of voltage reduction to be performed at Remote Level #1 is programmed at FC 73. Remote activation is then accomplished by applying a signal to the appropriate input terminal when FC 70 is set to remote latch.

• See the Control Features: Analog SCADA section of this manual.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 55

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

74 Features Voltage

Reduction

074 Remote #2 Value

0.0 %

0 2 NA 0.0

0.0

10.0

• Three levels of remotely activated latching voltage reduction are available.

• The percentage of voltage reduction to be performed at Remote Level #2 is programmed at FC 74. Remote activation is then accomplished by applying a signal to the appropriate input terminal when FC 70 is set to remote latch.

• See the Control Features: Analog SCADA section of this manual.

75 Features Voltage

Reduction

075 Remote #3 Value 0 2 NA 0.0

0.0

10.0

0.0 %

• Three levels of remotely activated latching voltage reduction are available.

• The percentage of voltage reduction to be performed at Remote Level #3 is programmed at FC 75. Remote activation is then accomplished by applying a signal to two appropriate input terminals when FC 70 is set to remote latch.

• See the Control Features: Analog SCADA section of this manual.

76 Features Voltage

Reduction

076 # of Pulse

Reduction Steps

0 2 NA 0 0 10

• Up to ten steps of voltage reduction are available when pulsed voltage reduction mode is selected. (FC 70 set to remote/ pulse.)

• FC 76 defines the number of steps selected for pulsed reduction operation. The percentage of voltage reduction of each step is defined at FC 77.

• See the Control Features: Analog SCADA section of this manual.

77 Features Voltage

Reduction

SOFT-ADD-AMP

077 % of Voltage Red

Per Pulse Step

0.0 %

079 Soft ADD-AMP

Limits

Off

0 2 NA 0.0

0.0

10.0

• FC 77 defines the percentage of voltage reduction which will be applied for each step of pulsed voltage reduction selected at

FC 76.

• See the Control Features: Analog SCADA section of this manual.

79 Features 0 2 NA Off NA NA

• The control has Soft ADD-AMP capabilities. Options include:

• Off • On • PIO Activate

• Default is Off; On with Remote Override

• See the Control Features: Soft ADD-AMP section of this manual.

80 Features Voltage

Limiter

080 Voltage Limiter

Mode

Off

0 2 NA Off NA NA

• The control has voltage-limiting capabilities for both high-voltage and low-voltage conditions.

• Additional voltage-limiting capabilities are included which are to be used when Integrate Volt/VAR Control (IVVC) software is controlling regulation.

• Options include:

• Off • High limit only • High/low limits • IVVC High limit only • IVVC High/low limits

• See the Control Features: Voltage Limiting section of this manual.

56 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

81 Features Voltage

Limiter

081 High Voltage

Limit

130.0 Volts

0 2 NA 130.0

120.0 135.0

• The high voltage limit is programmed here.

• When the voltage-limiting function is activated (FC 80, high and low limit active), the control will prevent the output voltage of the regulator from exceeding this value.

• See the Control Features: Voltage Limiting section of this manual.

82 Features Voltage

Limiter

082 Low Voltage

Limit

105.0 Volts

0 2 NA 105.0

105.0 120.0

• The low voltage limit is programmed here.

• When the voltage-limiting function is activated (FC 80, high and low limit active), the control will prevent the output voltage of the regulator from dropping below this value.

• See the Control Features: Voltage Limiting section of this manual.

89 Diagnostics Control 089 Firmware Version 0 NA NA NA NA NA

XX.YY.ZZ

• XX=Version number. Used for major changes that involve database enhancements.

• YY=Revision number. Used for changes that do not involve database enhancements.

• ZZ=Used for new firmware release.

91 Diagnostics Control 091 Self Test NA NA NA NA NA

• Access this screen to initiate the self test.

• With FC 91 accessed, the LCD will display (Enter): press the Enter key to select and press Enter again to confirm; the system will reboot, then display the startup screen. (Press Escape for further keypad use.)

• Refer to Power-Up/Reset Conditions in this section of this manual.

92 Features Security

Access

092 Security

Override

0 3 NA

• FC 92 is the control security override parameter.

• Entering the level 3 security code at FC 99 will permit the security parameters to be modified.

• See the Control Operation: Security System section of this manual.

0 0 3

96 Features Security

Access

096 Security Code

Level 1

1234

3 3 NA 1234 1 9999

• The number to be used as the level 1 security code is entered here.

• Entry of this number at FC 99 permits the user to change/reset only the parameters marked as level 1 security (demand and tap position readings).

• See the Control Operation: Security System section of this manual.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 57

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

97 Features Security

Access

097 Security Code

Level 2

12121

3 3 NA 12121 10000 19999

• The number to be used as the level 2 security code is entered here.

• Entry of this number at FC 99 permits the user to change/reset only the parameters marked as level 2 security (control settings, configuration, and clock) and level 1 security (demand and tap positions readings).

• See the Control Operation: Security System section of this manual.

98 Features Security

Access

098 Security Code

Level 3

32123

3 3 NA 32123 20000 32766

• The number to be used as the level 3 security code is entered here.

• Entry of this number at FC 99 permits the user to change/reset any parameter.

• Note: If the level 3 code is changed by the user, the new value should be recorded and kept in a safe place. If lost, the security codes can be retrieved with a flash card and CCI software, with the CCI software via a PC directly connected to the control, or with the remote communications system.

• See the Control Operation: Security System section of this manual.

99 Features Security

Access

Security Code

_____

3 3 NA 32123 20000 32766

• This is the function code used to access the menu location where security codes are entered for access to the system.

• Scrolling to this level is not allowed.

• See the Control Operation: Security System section of this manual.

100 Counters Operations

Counter

100 Last Counter

Change

XXXXX

(Date / Time shown)

0 NA NA NA NA NA

• FC 100 displays the time and date since the last total-operations counter change, as well as the quantity of operations since the last change.

• The function code may be set to a specific value.

0 NA 3 See

Note

NA NA 101 Counters Operations

Counter

101 Last 24 Hours

Operations

XXXXX

(Date / Time shown)

• Operations in last 24 hours (updated hourly and on every tap change).

• Note: This is reset to zero by pressing Edit/Reset, then Enter.

102 Counters Operations

Counter

102 Last 30 Days

Operations

XXXXX

(Date / Time shown)

• Operations in last 30 days (updated daily and on every tap change).

• Note: This is reset to zero by pressing Edit/Reset, then Enter.

0 NA 3 See

Note

NA NA

58 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

103 Counters Operations

Counter

103 Current Month

Operations

XXXXX

(Date / Time shown)

104 Last Month

Operations

XXXXX

(Date / Time shown)

0 NA 3 See Note NA

• Operations since the beginning of current month (updated on every tap change and reset when the clock’s month changes).

• Note: This is reset to zero by pressing Edit/Reset, then Enter.

104 Counters Operations

Counter

0 NA 3 See Note NA

• Operations in last calendar month (if reset, this field will remain zero until the month changes).

• Note: This is reset to zero by pressing Edit/Reset, then Enter.

105 Counters Operations

Counter

105 Current Year

Operations

XXXXX

(Date / Time shown)

0 NA 3 See Note NA

• Operations since January 1st of current year (updated on every tap change and reset when the clock’s year changes).

• Note: This is reset to zero by pressing Edit/Reset, then Enter.

See Note NA 106 Counters Operations

Counter

106 Last Year

Operations

XXXXX

(Date / Time shown)

0 NA 3

• Operations in last calendar year (if reset, this field will remain zero until the year changes).

• Note: This is reset to zero by pressing Edit/Reset, then Enter.

107 Counters

Counter

Operations 107 Enable Interval

Counters

Enabled

• FC 107 is used for enabling FC 101 to FC 106. Options include:

• Enabled • Disabled

0 3 NA Enabled NA

112 Metering Instantaneous 112 Percent

Regulation

XX.X %

0 NA NA NA NA NA

• When the regulator output voltage is greater than the input voltage (regulator boosting), the sign is implied (+). When the output voltage is lower than the input voltage, the sign is implied (-).

• This is the actual percentage that the regulator is actively boosting (raising) or bucking (lowering) the input (source) voltage.

• Tap position indication is calculated as follows: % regulation = [(output÷input) - 1] x 100.

125 Metering Instantaneous 125 Energy kW-hour

Forward

XXXX.X kW-h

0 NA 1 See Note NA NA

• This is the total forward energy, measured in kilowatt hours.

• Note: This is reset to zero by pressing Edit/Reset, then Enter, and when the Date/Time is changed.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 59

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

125 Metering Instantaneous 125 Energy kW-hour

Reverse

XXXX.X kW-h

0 NA 1

• This is the total reverse energy, measured in kilowatt hours.

• Note: This is reset to zero by pressing Edit/Reset, then Enter, and when the Date/Time is changed.

See

Note

126 Metering Instantaneous 126 Energy kvar-hour

Forward

XXXX.X kvar-h

• This is the total forward energy, measured in kvar.

126 Metering Instantaneous 126 Energy kvar-hour

Reverse

XXXX.X kvar-h

• This is the total reverse energy, measured in kvar.

127 Metering Forward Demand 127 Maximum % Boost

XX.X %

(Date / Time shown)

• This is the highest percentage that the regulator has raised the input voltage (since last reset).

• This parameter is the upper drag-hand value for the present percent regulation, FC 12.

• The control requires an input voltage from a differential or source potential transformer to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

128 Metering Forward Demand 128 Maximum % Buck 0 NA 1 NA NA NA

XX.X %

(Date / Time shown)

• This is the highest percentage that the regulator has lowered the input voltage (since last reset).

• This parameter is the lower drag-hand value for the present percent regulation, FC 12.

• The control requires an input voltage from a differential or source potential transformer to obtain this parameter. Lack of this voltage will result in the parameter displaying dashes.

140 Settings Configuration 140 Regulator Type 0 2 NA See

Note

NA NA

Type B

• Regulator type defines the regulator type based on ANSI standards. Options include:

• Type A (series design)

• Type B (inverted design)

• Type C (series transformer design) Series TX is listed on nameplate. Used on Eaton voltage regulators with voltage rating of

2.5 kV and current ratings above 875 A.

• Type D (series auto transformer design) Series AX is listed on nameplate. Used on Eaton voltage regulators with voltage

rating of 5.0 kV and 7.62 kV and current rating above 875 A.

• Note: The regulator type is included on nameplates.

141 Settings Menu System 141 Language

Selection

English

0 2 NA English NA NA

• This setting allows the user to select the language to display. Options include:

• English • Spanish • French • Portuguese

60 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

142 Counters Menu System 142 Date Format 0 2 NA MM/DD/ NA NA

MM/DD/YYYY

• This setting allows the user to select how the date format will be displayed. Options include:

• MM/DD/YYYY • DD/MM/YYYY • YYYY/MM/DD

143 Counters Menu System 143 Time Format 0 2 NA 12

Hour

NA NA

12 Hour AM/PM

• This setting allows the user to select whether time will be displayed on the 12-hour or the 24-hour scale. Options include:

• 12 Hour AM/PM • 24 Hour

144 Settings Configuration 144 P.I. ADD-AMP

High Limit

0 2 NA 16 NA NA

• The physical location of the high P.I. limit of the position indicator, as set by the user, is entered by the user-operator here.

• The allowable values are 16, 14, 12, 10, or 8.

145 Settings Configuration 145 P.I. ADD-AMP

Low Limit

-16

0 2 NA -16 NA

• The physical location of the low P.I. limit of the position indicator, as set by the user, is entered by the user-operator here.

• The allowable values are -16, -14, -12, -10, or -8.

146 Settings Configuration 146 Vin P.T.

Configuration

Vdiff Mode

0 2 NA Vdiff

Mode

NA NA

• This defines the configuration of the PT for the source-side voltage. Options include:

• Vdiff Mode • Vin Mode.

• The Vdiff Mode is used when the regulator is provided with an internal differential PT or if the Source Voltage Calculator (FC

39) is turned on. The Vin Mode is selected when an external source PT is supplied by the user to provide the source voltage for the CL-6 control.

• See the Control Features: Source-Side Voltage section of this manual.

150 Features Calibration 150 Reset

Calibration

0 3 NA NA NA NA

• This is a command. When Enter key is pressed, a (CONFIRM) message is displayed on the fourth line of LCD. When Enter key is pressed again, voltage and current calibration factors are reset.

3 NA Off NA NA 151 Settings Calendar Clock 151 Daylight Savings

Time Enable

Off

• This function enables daylight savings time to function. Options include:

• Off • On

152 Settings Calendar Clock 152 Daylight Savings

Time Active

• This function displays if daylight savings time is currently active (Yes or No).

NA NA NA NA NA

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 61

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

160 Features Communications

Protocol

160 Com Port #2

DNP

0 2 NA DNP NA

• This function defines which resident protocol of the control will be used on Communications Port #2; options include:

• DNP •2179

• See the Control Features: Digital SCADA section of this manual.

161 Features Communications 161 Com Port #2

Speed

9600 BPS

0 2 NA 9600 NA

• The control microprocessor has two communications channels, each with selectable baud rates.

• Options for Communications Port #2 include:

• 300 • 600 • 1200 • 2400

• 4800 • 9600 • 19200 • 38400

162 Features Communications 162 Com Port #2

Sync Time

0 msec

163 Features Communications 163 Com Port #2

DNP Master Adrs

1234

0 2 NA 0 0

• This defines the period of time, for Com Port #2, the received data line must idle to assume the start of a request message.

• See the Control Features: Digital SCADA section of this manual.

0 2 NA 1234 0

• The control will send unsolicited responses to this master address.

65535

164 Features Communications 164 Com Port #2

DNP Remote Adrs1

0 2 NA

• This is the primary DNP remote address for Com Port #2.

• The DNP Remote Address 1 for Com Port #2 is entered at FC 64 with a factory preset address of 2.

2 0 65535

164 Features Communications 164 Com Port #2

DNP Remote Adrs2

65519

0 2 NA 65519

• This is the DNP remote address available for remote configuration. For more information, contact your Eaton representative.

• The DNP Remote Address 2 for Com Port #2 is entered at FC 64 with a factory preset address of 65519.

0 65535

164 Features Communications 164 Com Port #2

2179 Remote Adrs

0 2 NA 6 0 2046

• This is the control SCADA 2179 Remote Address for Com Port #2.

• Each control on the system can be uniquely addressed by the SCADA RTU or other communications device. For 2179, the options include:

• 0-2046 = Unique device address range. Controls with addresses in this range uniquely respond when the particular address is sent.

• All controls on the system listen and change as commanded, with no response, if a message is sent to address 2047.

• The control SCADA address for Com Port #1 is entered at FC 64 with a factory preset address of 6.

• For 2179, the High Entry Limit is 2046.

62 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

165 Features Communications 165 Com Port #2

Handshake Mode

RTR without CTS

0 2 NA RTR without

CTS

NA NA

• FC 165 allows the user to select the appropriate method for control-to-SCADA message interaction (handshake mode) on

Com Port #2.

• The transmit/receive handshaking mode allows adaptability to different types of communication system interfaces with the control. Options include:

• RTS without CTS - Request to Send (RTS) without Clear to Send (CTS) support

• RTS with CTS - Request to Send (RTS) with Clear to Send (CTS) support

• RTR without CTS- Ready to Receive (RTR) without Clear to Send (CTS) support

• RTR with CTS - Ready to Receive (RTR) with Clear to Send (CTS) support

• See FC 166 and FC 167 for programming of the Transmit Enable Delay and Transmit Disable Delay settings.

166 Features Communications 166 Com Port #2

Tx Enable Delay

0 mSec

0 2 NA 0 0

• When the control is set for transmit control handshaking, the user may require a delay (in milliseconds) on Com Port #2 between the time when the transmit enable is enabled to when data is transmitted.

• Example: If the transmit enable were used as a keying device for a transmitter or modem, a “warm-up“ period may be necessary before data can be transmitted.

• For more information, refer to the Advanced Control Features: Communications section of this manual.

1000

167 Features Communications 167 Com Port #2

Tx Disable Delay

0 mSec

0 2 NA 0 0

• When the control is set for transmit control handshaking, the user may require a delay (in milliseconds) on Com Port #2 between the time when the data transmission is terminated and the transmit enable signal is disabled.

1000

170 Features Tap to

Neutral

170 Tap to Neutral 0 2

Off

• The Tap-to-Neutral feature is enabled here. The options include:

• Off • On

• For more information, refer to the Control Features: Tap-to-Neutral section of this manual.

NA Off NA NA

175 Features Soft ADD-AMP 175 SOFT-ADD-AMP

High Limit

0 2 NA 16 NA NA

• Soft ADD-AMP restricts the range of regulation firmware logic as opposed to the hardware on the tap position indicator. The high limit is set here.

• The allowable values are 16, 14, 12, 10, or 8.

176 Features Soft ADD-AMP 176 SOFT-ADD-AMP

Low Limit

0 2

-16

• The low limit of the Soft ADD-AMP restriction on the range of regulation are set here.

• The allowable values are -16, -14, -12, -10, or -8.

NA -16 NA NA

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 63

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

189 Diagnostics Control 189 Database

Version

• This is the Database Version Number of the firmware.

• XX = Version Number

190 Diagnostics Control 190 PLD

Version

• This is the Programmable Logic Device (PLD) Version Number

• XX = Programmable Logic Device (PLD) Version Number

191 Diagnostics Control 191 2179

Version

• This is the 2179 Protocol Version Number

• XX = 2179 Protocol Version Number

192 Diagnostics Control 192 DNP Version

• This is the DNP Protocol Version Number

• XX = DNP Protocol Version Number

193 Diagnostics Control 193 DNP Checksum

XXXX

• This is the DNP Protocol Checksum

260 Diagnostics Communications 260 Com Port #1

Tx Messages

XXXXX

• This is a count of Transmitted Messages from Com1/Com3.

261 Diagnostics Communications 261 Com Port #1

Rx Messages

XXXXX

• This is a count of Received Messages from Com1/Com3.

262 Diagnostics Communications 262 Com Port #1

Rx Errors

XXXXX

• This is a count of Receive Errors from Com1/Com3.

263 Diagnostics Communications 263 Com Port #2

Tx Messages

XXXXX

• This is a count of Transmitted Messages from Com Port #2

264 Diagnostics Communications 264 Com Port #2

Rx Messages

XXXXX

• This is a count of Received Messages from Com Port #2

Security Level

Read Edit

0 NA

Reset

Factory

Setting Key Entry Limit

Low High

NA NA NA NA

64 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

265 Diagnostics Communications 265 Com Port #2

Rx Errors

XXXXX

• This is a count of Received Errors from Com Port #2

266 Features Communications 266 Com Port #1

2179 Ordinal Map

CL-6

• This allows the user to set the control to emulate different maps for different CL-series regulator controls for Com1/Com3 when using the 2179 communications protocol.

• The options include:

• USER • CL-5D • CL-5E • CL-6A • CL-6 (default)

267 Features Communications 267 Com Port #1

DNP Data Dict

CL-6

0 2 NA CL-6 NA NA

• This allows the user to set the control to emulate different data dictionaries for different CL-series regulator controls for Com

Ports #1/#3 when using the DNP communications protocol.

• The options include:

• USER • CL-5D • CL-5E • CL-6A • CL-6A w/Events • CL-6 (default)

268 Features

269 Features

Communications 268 Com Port #2

2179 Ordinal Map

CL-6

Communications 269 Com Port #2

DNP Data Dict

CL-6

• This allows the user to set the control to emulate different maps for different CL-series regulator controls for Com Port #2 when using the 2179 communications protocol.

• The options include:

• USER • CL-5D • CL-5E • CL-6A • CL-6 (default)

• This allows the user to set the control to emulate different data dictionaries for different CL-series regulator controls for Com

Port #2 when using the DNP communications protocol.

• The options include:

• USER • CL-5D • CL-5E • CL-6A • CL-6A w/Events • CL-6 (default)

300 Diagnostics Maintenance 300 PMT Mode A

State

0 2 NA Off NA NA

Off

• The Preventive Maintenance Tapping (PMT) feature Mode A will automatically raise and lower the tap-changer to wipe contact blades. The PMT feature Mode A is turned off or on here. The options include:

• Off • On

0 NA NA NA NA NA 301 Diagnostics Maintenance 301 PMT Mode A

Countdown Delay

20 Days

• This is the time remaining until the next PMT Mode A operation.

302 Diagnostics Maintenance 302 PMT Mode

A Time Delay

7 Days

0 2 NA 7 1 99

• This is the user-defined period of time between PMT Mode A operations.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 65

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

303 Diagnostics Maintenance 303 PMT Mode A

Issue Test

NA 2 NA NA NA

• The user can force the PMT Mode A operation independent of the time-delay setting.

• This is a command. When the Enter key is pressed, the (CONFIRM) message is displayed on the fourth line of the LCD.

When the Enter key is pressed again, the test sequence begins.

NA 320 Diagnostics Maintenance 320 PMT Mode B

State

NA 2 NA Off NA

Off

• The Preventive Maintenance Tapping (PMT) feature Mode B will automatically raise and lower the tap-changer to wipe reversing contact blades. The PMT feature Mode B is turned off or on here. The options include:

• Off • On

NA NA NA NA NA 321 Diagnostics Maintenance 321 PMT Mode B

Countdown Delay

XX Days

• This is the time remaining until the next PMT Mode B operation.

322 Diagnostics Maintenance 322 PMT Mode B

Time Delay

7 Days

• This is the user-defined period of time between PMT Mode B operations.

0 2 NA 7 1 99

323 Diagnostics Maintenance 323 PMT Mode B

Start Time

22:00

0 2 NA 22:00 00:00 23:59

• When the PMT feature Mode B is turned on (FC 320), operation is enabled only within a specified time period. The starting time is set here.

324 Diagnostics Maintenance 324 PMT Mode B

Stop Time

02:00

0 2 NA 02:00 00:00 23:59

• The PMT Mode B operation is disabled after the stopping time set here.

325 Diagnostics Maintenance 325 PMT Mode B

Max Deviation

0 2 NA

• This is the maximum number of tap positions beyond neutral for which PMT Mode B is enabled.

8 1 16

326 Diagnostics Maintenance 326 PMT Mode B

Designation

0 2 NA Off NA NA

Off

• This allows the performance of PMT Mode B maintenance operations to be coordinated among multiple regulators. Options include:

• Off • Master • Slave

327 Diagnostics Maintenance 327 PMT Mode B

Current Limit

50 %

0 2 NA 50 0 160

• The PMT Mode B is enabled at or below the current limit setting, defined as a percentage of the CT primary.

66 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

303 Diagnostics Maintenance 303 PMT Mode A

Issue Test

NA 2 NA NA NA

• The user can force the PMT Mode A operation independent of the time-delay setting.

• This is a command. When the Enter key is pressed, the (CONFIRM) message is displayed on the fourth line of the LCD.

When the Enter key is pressed again, the test sequence begins.

NA 320 Diagnostics Maintenance 320 PMT Mode B

State

NA 2 NA Off NA

Off

• Off • On

NA NA NA NA NA 321 Diagnostics Maintenance 321 PMT Mode B

Countdown Delay

XX Days

• This is the time remaining until the next PMT Mode B operation.

322 Diagnostics Maintenance 322 PMT Mode B

Time Delay

7 Days

• This is the user-defined period of time between PMT Mode B operations.

0 2 NA 7 1 99

323 Diagnostics Maintenance 323 PMT Mode B

Start Time

22:00

0 2 NA 22:00 00:00 23:59

• When the PMT feature Mode B is turned on (FC 320), operation is enabled only within a specified time period. The starting time is set here.

324 Diagnostics Maintenance 324 PMT Mode B

Stop Time

02:00

0 2 NA 02:00 00:00 23:59

• The PMT Mode B operation is disabled after the stopping time set here.

325 Diagnostics Maintenance 325 PMT Mode B

Max Deviation

0 2 NA

• This is the maximum number of tap positions beyond neutral for which PMT Mode B is enabled.

8 1 16

326 Diagnostics Maintenance 326 PMT Mode B

Designation

0 2 NA Off NA NA

Off

• This allows the performance of PMT Mode B maintenance operations to be coordinated among multiple regulators. Options include:

• Off • Master • Slave

327 Diagnostics Maintenance 327 PMT Mode B

Current Limit

50 %

0 2 NA 50 0 160

• The PMT Mode B is enabled at or below the current limit setting, defined as a percentage of the CT primary.

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

328 Diagnostics Maintenance 328 PMT Mode B

Issue Test

NA 2 NA NA NA

• This is a command. When the Enter key is pressed, the (CONFIRM) message is displayed on the fourth line of the LCD.

When the Enter key is pressed again, the test sequence begins.

333 Diagnostics Maintenance 333 Contact Duty

Cycle Monitor

XX.XXX%

0 NA NA NA NA NA

• The contact life Duty Cycle Monitor function represents the amount of life consumed, for the worst-case contact, displayed as a percentage of total life. Individual contact wear levels can be interrogated via the CCI software.

350 Features Compact

Flash

350 CompactFlash

Data Writer

NA NA NA NA NA NA

• This is a command to write information to the compact flash card. Refer to the Advanced Features: Compact Flash Card section of this manual.

351 Features Compact

Flash

351 CompactFlash

Load Custom Cfg

NA 2 NA NA NA NA

• This is a command to load a custom configuration to the CL-6 control. Refer to the Advanced Features: Compact Flash Card section of this manual.

352 Features Compact

Flash

352 CompactFlash

Load Std Config

NA 2 NA NA NA

• This is a command to load a standard configuration to the CL-6 control. Refer to the Advanced Features: Compact Flash

Card section of this manual.

353 Features Compact

Flash

353 CompactFlash

Save Custom Cfg

NA NA NA NA NA NA

• This is a command to save a custom configuration from the CL-6 control. Refer to the Advanced Features: Compact Flash

Card section of this manual.

354 Features Compact

Flash

354 CompactFlash

Save Std Config

NA NA NA NA NA NA

• This is a command to save a standard configuration from the CL-6 control. Refer to the Advanced Features: Compact Flash

Card section of this manual.

NA 355 Features Compact

Flash

355 CompactFlash

Format CF Card

NA NA NA NA NA

• This is a command to format the compact flash card. Refer to the Advanced Features: Compact Flash Card section of this manual.

357 Features Compact

Flash

357 CF Load Custom

Basic Config

NA 2 NA NA NA

• This is a command to load a custom Basic Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

358 Features Compact

Flash

358 CF Load

Standard Basic

Config

NA 2 NA NA

• This is a command to load a Standard Basic Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 67

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

359 Features Compact

Flash

Compact

Flash

359 CF Save Custom

Basic Config

NA 2 NA NA

• This is a command to save a Custom Basic Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

360 Features 360 CF Save

Standard Basic

Config

NA 2 NA NA

• This is a command to save a Standard Basic Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

361 Features Compact

Flash

361 CF Load Custom

AdvFeat Config

NA 2 NA NA

• This is a command to load a Custom Advanced Feature Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

362 Features Compact

Flash

362 CF Load

Standard AdvFeat

Config

NA 2 NA NA

• This is a command to load a Standard Advanced Feature Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

363 Features Compact

Flash

363 CF Save Custom

AdvFeat Config

NA 2 NA NA

• This is a command to save a Custom Advanced Feature Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

364 Features Compact

Flash

364 CF Save

Standard AdvFeat

Config

NA 2 NA NA

• This is a command to save a Standard Advanced Feature Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

365 Features Compact

Flash

365 CF Load Custom

Comms Config

NA 2 NA NA

• This is a command to load a Custom Comms Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

366 Features Compact

Flash

366 CF Load

Standard Comms

Config

NA 2 NA NA

• This is a command to load a Standard Comms Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

367 Features Compact

Flash

367 CF Save Custom

Comms Config

NA 2 NA NA

• This is a command to save a Custom Comms Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

368 Features Compact

Flash

368 CF Save

Standard Comms

Config

NA 2 NA NA

• This is a command to load a Custom Basic Configuration.

• See Flash Card Functions in the Advanced Control Features section of this manual for more information.

Key Entry Limit

Low High

NA NA

68 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 5-3. Function Codes (continued)

Func.

Code

Level 1

Main Menu

Level 2

Sub-Menu

Level 3

Parameter

Security Level

Read Edit Reset

Factory

Setting

Key Entry Limit

Low High

NA 400 Features Leader/

Follower

400 LoopShare

Communication

0 2

• This will turn On or Off LoopShare Communications. The options include:

• On • Off

401 Features Leader/

Follower

401 LoopShare Comms

State

NA 2

• This is the state of LoopShare Communications. It will display either Active or Inactive.

Off

402 Features Leader/

Follower

402 LoopShare Comms

Port

• This will turn On or Off Leader/Follower. The options include:

• On • Off

411 Features Leader/

Follower

411 Leader/Follower

State Active

• This is the Port LoopShare is using. The options are:

• COM2 • COM3

403 Features Leader/

Follower

403 LoopShare Comms

Table

Assignment

• This is the device in the LoopShare Table. The options include:

• Device 1 • Device 2 • Device 3 • Passive

404 Features Leader/

Follower

404 LoopShare Comms

Tx Delay

XXXXX mSec

Passive

• This is the delay between the time a device receives an updated LFDT and when the device passes it along.

405 Features Leader/

Follower

405 LoopShare Comms

Timeout

XX seconds

0 2 NA 3

• LoopShare timeout time.

410 Features Leader/

Follower

410 Leader/Follower

Off

0 2 NA Off

COM3

• This is the state of the Leader/Follower function. It will display either Active, Inactive/Ready, or Not Ready.

413 Features Leader/

Follower

413 Leader/Follower

Designation

Follower 1

0 2 NA Follower

• This is the Leader/Follower table designation. The options include:

• Leader • Follower 1 • Follower 2

414 Features Leader/

Follower

414 Follower Devices

Configured

One

0 2 NA One

• The number of Follower devices.

415 Features Leader/

Follower

415 Leader/Follower

Tap Wait Timer

XXXXX mSec

0 2 NA 0

• The length of time in milliseconds the device waits between receiving a signal to tap and actually tapping.

10000

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 69

TABLE 5-3. Function Codes (continued)

Func.

Code

416

Level 1

Main Menu

Features

Level 2

Sub-Menu

Leader/

Follower

Level 3

Parameter

416 Leader/Follower

Timeout

XX Seconds

Security Level

Read

Edit

Reset

Factory

Setting

Key Entry Limit

Low

• The length of time in seconds before the Leader returns to starting tap position if a Follower device does not tap.

High

417 Features Leader/

Follower

417 Leader/Follower

Retry Delay

XX Seconds

0 2 NA 5 5 60

• The length of time in seconds before the leader retries to initiate a tapping operation if an initial attempt failed.

418 Features Leader/

Follower

418 Leader/Follower

Retries

0 2 NA 3

• The number of tap retries before the Leader stops retrying taps. Enter the number of times to retry tapping.

1 10

420 Features Leader/

Follower

420 Leader/Follower

Monitor

Disabled

NA NA

• This is the state of the leader Follower Monitor. It will display either enabled or disabled.

450 Features Alternate

Config

450 Alternate

Configuration

Off

0 2

OFF

• This will turn on Alternate Configurations. The options are:

• Off • On • ARLH • ARLC • P.I.O.

• Selecting "On" will enable the basic Alternate Configuration settings.

• Selecting ARLH will enable the Auto-Restore Local Heartbeat function. This function will revert control settings modified through SCADA communications back to original settings when a heartbeat signal is lost or discontinued.

• Selecting ARLC will enable the Auto-Restore Local Comms function. This function will revert control settings modified through SCADA communications back to original settings when a communications signal is lost.

• Selecting P.I.O. will enable Alternate Configuration settings to be enabled or disabled using P.I.O. logic equations.

NA NA NA NA 451 Features Alternate

Config

451 Alternate

Configuration

Inactive

• This is the state of Alternate Configuration. It will display either Active or Inactive.

70 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Special functions

Use these functions to perform commands through the menu or function code system.

Enter security code - FC 99

Entering FC 99 as follows:

Master Reset – FC 38

Function Code

_99

Initial Press Reset Message

Entering FC 38 or accessing this command via the menu system will cause the LCD to display the following message:

038 Master Reset causes the menu system to enter the security code mode:

Security Code

-----

(PRESS RESET)

While the (PRESS RESET) message is displayed, pressing the Escape key causes the LCD to exit the viewing of this command and to display the previous sub-menu items. Or, pressing the Edit/Reset button will request a "Confirm" before resetting all demand metering and tap position maximum and minimum values.

Confirm message

While the (CONFIRM) message is displayed:

038 Master Reset

This function code does not have an item in the menu system.

Self-test - FC 91

Using the Self-Test, FC 91, will reboot the system. After pressing Function, 9-1-Enter and accessing the FC 91 display, press Enter again to select the option and again to confirm. When the reboot is complete, the LCD displays the startup screen. Press Escape for further keypad use.

(CONFIRM)

Test LEDs

Access this from the Main Menu (Level 1). With the cursor selecting “Test LEDs” in the main menu, press the Enter key and the front panel LEDs will blink three times. The Com port and Neutral Light LEDs do not blink.

pressing the Escape key causes the LCD to display the initial (PRESS RESET) message; pressing the Enter key causes the execution of the command and the LCD will display (DONE).

Turn display off

Access this from the Main Menu (Level 1). With the cursor selecting “Turn Display Off” in the main menu, press the

Enter key and the LCD display will turn off. To turn on the LCD display, press any button in the keypad.

Done message

While the (DONE) message is displayed:

038 Master Reset

(DONE) pressing the Escape or Enter key will cause the LCD to exit the viewing of this command and to display the previous sub-menu items.

Alarms

Use the nested menu to access the lists of acknowledged and unacknowledged system alarms. No security code is needed to display an alarm; a security code is needed to acknowledge an alarm.

•

Alarms/Events > Alarms Active Unacknowledged

This displays a list of active, unacknowledged system

alarms.

Alarms/Events > Alarms Active Acknowledged

This displays a list of active, acknowledged system

alarms.

This section covers Alarm displays; for more information, see the Advanced Features: Alarms section of this manual.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 71

If there are no unacknowledged active alarms available, the

LCD displays the following message:

No Unacknowledged

Active Alarms

If there are no acknowledged active alarms available, the LCD displays the following message:

No Acknowledged

Active Alarms

An actual alarm display example follows:

System Alarm #1 is

Active

01/14/2004 11:35:58a

(MORE...□)

Status alarms

The status alarms include the following:

•

Supervisory Active

Reverse Power Flow

No Input Voltage Detected

No Output Voltage Detected

Tap At Neutral

PMT Mode A in Progress

PMT Mode B in Progress

Volt Limit On

Reg Blocked Annunciator

Voltage Reduct On Annunciator

Alternate Profile Active

Default Time

Power Up Self Test Error

Met Indeterminate Pwr Dir

Met Rev Pwr Flow

LF Ldr Unable to Operate

LF Ldr Inactive

LF Follower Not Ready

LS Loss of Comms

Motor Trouble

Data alarms

Instantaneous metering quantities

For most Instantaneous Metering quantities, there are two data alarms available: One that can be triggered for a HIGH threshold value and one that can be triggered for a LOW threshold value.

•

Secondary Load Voltage High

Secondary Load Voltage Low

Secondary Source Voltage High

Secondary Source Voltage Low

Compensated Voltage High

Compensated Voltage Low

Primary Load Voltage High

Primary Load Voltage Low

Primary Source Voltage High

Primary Source Voltage Low

Load Current High

Load Current Low

Power Factor Low (only LOW threshold is available) kVA High kVA Low kW High kW Low

KVAR High

KVAR Low

Forward kWHr High

Forward kWHr Low

Reverse kWHr High

Reverse kWHr Low

Forward KVARHr High

Forward KVARHr Low

Reverse KVARHr High

Reverse KVARHr Low

Frequency High

Frequency Low

Load Voltage Total Harmonic Dist. High (only HIGH threshold is available)

Load Current Total Harmonic Dist. Low (only LOW threshold is available)

72 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Counter quantities

For most Counter quantities, there will be only one data alarm that can be triggered for a HIGH threshold value.

•

Tap Position High

Tap Position Low

Total Operations Counter High

Last 24 Hours Operations Counter High

•

Last 30 Days Operations Counter High

Current Month Operations Counter High

Last Month Operations Counter High

Current Year Operations Counter High

Last Year Operations Counter High

Maintenance quantities

See the Advanced Features: Duty Cycle Monitor section of this manual for more information on these alarms.

•

DCM (Duty Cycle Monitor) Level 1 High

DCM (Duty Cycle Monitor) Level 2 High

Events

Use the nested menu to access the lists of events. No security code is needed to display an event; a security code is needed to acknowledge an event.

•

Alarms/Events > Events

This displays a list of system events.

This section covers Event displays; for more information, see the Advanced Features: Events section of this manual.

The event labels can use 2 LCD lines for a total of up to 40 characters. An actual event display example follows:

If there are no events available, the LCD displays the following message:

Supervisory On

01/14/2004 11:35:58a

•

User Reset

Clock Has Been Set

Factory Calibration Required

No Data Acquisition

Tap Raise

Tap Lower

Tap at Neutral Position

Neutral Sync

Max Tap Position Sync

Min Tap Position Sync

Voltage Limit Activated

Voltage Limiter High

Voltage Limiter Low

Voltage Reduction Activated

Soft ADD-AMP High

Soft ADD-AMP Low

•

PMT Mode A Auto Wipe Complete

PMT Mode B Auto Wipe Complete

Input Voltage Missing

Input Voltage Restored

•

Output Voltage Missing

Output Voltage Restored

Note: When an alarm is configured to generate an event, the alarm label will be displayed as the event label.

When accessed through the keypad, only the last 50 events will be displayed. If there are many events (100+) that have not been read via the front panel, it may take a few seconds.

While this is occurring the following message, indicating that events are being read, may appear before displaying the latest event:

Events...

The events list may include the following:

There Are No Events.

Power-up/reset conditions

When the system first comes up and no error conditions are detected, the LCD displays the following message:

Self-Test Complete.

(Date/Time Shown)

(PASS)

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 73

If error conditions are detected, the LCD may display the following messages:

Self-Test Complete.

Factory Calibration

Required!

(ATTENTION...MORE )

Self-Test Complete.

Data Acquisition!

(FAILURE...MORE )

Self-Test Complete.

Configuration Value

Required!

(ATTENTION...MORE )

If the "Configuration Value Required!" message appears, refer to Section 3: Initial Programming. Perform basic programming steps and then initiate a self-test.

Self-Test Complete.

Clock Needs Setting!

(ATTENTION...MORE )

Self-Test Complete.

Input Voltage

Missing!

(ATTENTION...MORE )

Self-Test Complete.

Output Voltage

Missing!

(FAILURE...MORE )

Self-Test Complete.

No Neutral

Sync Signal!

(ATTENTION...LAST )

Indication messages

The fourth line of the LCD is used to provide messages associated with menu mode indications. These indication messages can be defined with up to 20 characters.

Displayed during Power-Up/Reset Mode:

•

(PASS)

•

(ATTENTION)

(ATTENTION...MORE )

•

(ATTENTION...LAST )

(FAILURE)

(FAILURE...MORE )

(FAILURE...LAST )

Displayed when an invalid function code is entered:

•

(INVALID FUNCTION)

Displayed when an invalid security code is entered:

•

(INVALID SECURITY)

Displayed when a parameter cannot be read, written, or reset because the proper security code has not been entered:

•

(IMPROPER SECURITY)

Displayed when edit/reset mode is active:

•

(EDIT)

(CONFIRM) (also displayed to prompt the user when issuing a command from the menu system, i.e., PMT

Mode A Issue Test)

Displayed when a value that has been entered is out of the valid range:

•

(VALUE TOO HIGH)

(VALUE TOO LOW)

(OUT OF RANGE)

(INVALID DATE)

•

(INVALID TIME)

Displayed when listing alarms or events:

•

(MORE... )

(LAST... )

Displayed when the user access Master Reset:

•

(PRESS RESET)

•

(DONE)

Displayed when an alarm is to be acknowledged or unacknowledged by the user:

•

(ACKNOWLEDGE)

(UNACKNOWLEDGED)

74 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Displayed when the user accesses Compact Flash operations:

•

(WRITING)

(WRITING COMPLETE)

•

(WRITING FAILED)

(WRITING ABORTED)

(LOADING...)

(LOADING COMPLETE)

•

(LOADING FAILED)

(LOADING ABORTED)

(SAVING...)

(SAVING COMPLETE)

(SAVING FAILED)

(SAVING ABORTED)

(FORMATTING...)

(FORMATTING COMPLETE)

•

(FORMATTING FAILED)

(FORMATTING ABORTED)

Displayed when indicating that the values for Load Voltage

Secondary and Source Voltage Secondary have been derived by the control:

•

(CALCULATED)

Displayed when indicating inconsistencies between the neutral signal and Tap Position value entered by the user:

•

(TAP AT NEUTRAL)

(TAP NOT AT NEUTRAL)

When operating in the Cogeneration Mode, metering always operates in the forward direction except that load center voltage is calculated based upon the reverse line-drop compensation settings when the fixed 1% reverse metering threshold is exceeded. So, the LCD displays:

Comp Voltage

Band

Using Func 1-3,54,55

Load voltage

123.0

119.0-121.0

When the *Load Voltage key is pressed while the Voltage

Limiting Mode = High and Low Limits Active, the LCD displays:

Load Voltage 115.0

Limiter 119.0-121.0

If Voltage Limiting Mode = Only High Limit, the LCD displays:

Load Voltage

Limiter

115.0

121.0

If Voltage Limiting Mode = Off, the LCD displays:

Load Voltage

Limiter

115.0

Off

Metering-PLUS formats

This section covers Metering-PLUS displays; for more information, see the Advanced Features: Metering PLUS section of this manual.

Compensated voltage

When the *Comp Voltage key is pressed while the control is operating under Forward Power Flow conditions, the LCD displays:

Comp Voltage

Band

Using Func

125.0

119.0-121.0

1-5

Load current

When the *Load Current key is pressed while the control is operating under Forward Power Flow conditions and automatic tapping is inhibited, the LCD displays:

Load Current 600 Fwd

Current Threshold 12

Mode Locked Forward

Blocked: TB8 - 4&5

If the control is operating under Reverse Power Flow conditions, the LCD displays:

Comp Voltage

Band

Using Func

115.0

108.0-112.0

51-55

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 75

On the first line, "Fwd" corresponds to Forward Power Flow direction. The third line is used to display one of the following operating modes:

•

Mode Locked Forward

Mode Locked Reverse

•

Mode Reverse Idle

Mode Bi-directional

Mode Neutral Idle

Mode Cogeneration

•

Mode Reactive Bi-directional

If automatic operation is blocked, the fourth line displays one of the following blocking conditions:

•

Blocked: Cntrl Switch

Blocked: Tap-to-Neutral

Blocked: TB8-4&5

Blocked: Func Code 069

•

Blocked: Rev Pwr Mode

If the control is operating under Reverse Power Flow conditions and automatic tapping is not inhibited, the LCD displays the following:

Load Current 200 Rev

Current Threshold 2

Mode Bi-directional

Tap position

When the *Tap Position key is pressed while the Soft

ADD-AMP feature = On, the LCD displays the following: the following:

Tap Position

At Limit

SOFT-ADD-AMP -12, 14

P.I. ADD-AMP -14, 16

If the Soft ADD-AMP feature = On and the present tap position indicates that tap-changer is at a limit, the LCD displays

Tap Position - 12

SOFT-ADD-AMP -12, 14

P.I. ADD-AMP -14, 16

If the Soft ADD-AMP feature = Off and the present tap position indicates that tap-changer is at neutral, the LCD displays the following:

Tap Position 0

P.I. ADD-AMP -14, 16

If the Soft ADD-AMP feature = Off and if the tap-changer is at or beyond user-configured P.I. ADD-AMP limits, the LCD displays the following:

Tap Position

At Limit

P.I. ADD-AMP -14, 16

76 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Section 6: Control features

Calendar/clock

Integral to several functions of the control is an internal calendar/clock. The digital clock maintains the year, month, day, hour, minute and seconds, within 1 second. The display format is user-selectable (see FC 142 and FC 143).

The control time is synchronized to the system frequency when powered by ac. When ac power is lost, the clock maintains time, for a minimum of 72 hours, by using a crystal oscillator and a capacitor as the power source.

Twenty minutes on ac power is required to fully charge the capacitor.

The LCD displays the current date and time at the end of the self-test when the front panel is turned on. However, upon power-up after extended loss of power, the control clock time and date will default to midnight, January 1, 1970.

The date and time can be read and set at FC 50. When setting, all of the digits must be entered using the standard

24-hour format (MM/DD/YYYY hh:mm). If an error is made while entering the values, backspace using either arrow scroll key.

Daylight Savings Time is available starting with the CL-6B control. The factory default is for daylight savings time to be off. Daylight savings time can be turned on using FC 151.

Metering

The control has extensive metering capabilities, which are categorized as Instantaneous, Forward Demand, and

Reverse Demand.

Demand task operation

The demand metering function is based upon a sliding window concept, or moving integral. The algorithm implemented simulates the response of a thermal demand meter which will reach 90% of its final value after one demand interval in response to a step function input. See

Figure 6.1.

The task works like this:

1. For 3 minutes after a power outage or power reversal, no demands are calculated. This allows the utility system to stabilize from the event which created the outage or power reversal.

2. At 3 minutes, the present demands (for the appropriate power direction) are set to their corresponding instantaneous value and the integration algorithm begins according to the programmed demand interval at

FC 46.

3. At 15 minutes or at the demand time interval (whichever is longer), the high/low demand values begin to track the present demand, similar to drag hands. All demand values are calculated continuously and, if a change has occurred, the high/low demands are stored in the non-volatile memory every 15 minutes. This prevents loss of data during a power interruption or outage.

Notice that the provisions are made to reset any demand value by itself via the change/reset key, or all demand values can be reset simultaneously by entering FC 38. High and low values will be set to their corresponding present demand value, and the dates and times will be set to the present date/time.

Two conditions can cause the present demands to be invalid: The power has just been applied (within the

3-minute freeze period) or the power flow has changed direction. If the control is metering in the forward direction, the reverse present demands will be invalid; if metering in the reverse direction, the forward present demands will be invalid.

Instantaneous metering

Instantaneous metering values are refreshed once each second. They may be accessed directly at FC 6 through

FC 19, FC 125, and FC 126. See Table 5-3 in the Control

Programming section of this manual for more information on these function codes.

Demand metering

The control provides demand metering values for these parameters: load voltage, and, for forward and reverse, source voltage, compensated voltage, load current, kVA load, kW load, and kvar load. For each of these parameters the present value, the high value since last reset, and the low value since last reset are recorded, as well as the earliest time and date that the high and low values occurred.

Additionally, the power factor at kVA-high demand and kVA-low demand are recorded. All of these values are stored in non-volatile memory separately for forward and reverse power conditions.

See Table 5-3 in the Control Programming section of this manual for information on the function codes associated with demand metering (FC 20 through FC 38, FC

127, and FC 128).

100%

90%

0 1T 2T 3T 4T

Demand Time Interval

5T

Figure 6-1. Demand time interval response.

6T t

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 77

Tap position indication

The control has the ability to track the position of the tap-changer. The tap position indication (TPI) function senses the status of the motor and neutral light circuits and does not require source (input) voltage. The present tap position is stored at FC 12.

EXAMPLES: “8” at FC 12 indicates 8 raise and “-7” indicates 7 lower.

The TPI function is synchronized to the position of the tap-changer by running the regulator to the neutral position.

To manually set the present tap position: Access security level 3; access FC 12; use the Edit key to change to the desired value.

The maximum tap position since last reset (upper drag-hand value of the present tap position) and its date and time are stored at FC 27. The minimum tap position since last reset

(lower drag hand value of the present tap position) and its date and time are stored at FC 28.

The TPI drag hand values and dates/times are reset to the present values by the master reset, FC 38, or by resetting each of the values individually. The drag hand reset switch resets the drag hands of the position indicator only, not TPI.

All TPI values are stored in non-volatile memory.

The following conditions could occur if the present tap position was manually set incorrectly:

• The present tap position value will go to invalid “---” if the present tap position is 0 (zero, neutral) but no neutral signal is detected. For example, this condition will occur if a replacement control with present tap position set to “0” is installed on a regulator which is not in the neutral position.

• If the TPI function detects a successful upward tap and the prior value of FC 12 was “16”, or a successful downward tap is detected and the prior value of FC 12 was

“–16,” the prior value will be maintained.

The display will show a diagnostic error message upon power-up when: (1) the present tap position value prior to power-up is “---” (invalid) and the regulator is not in neutral position; (2) The present tap position prior to power-up is

“0” and the regulator is not in the neutral position. [This condition will cause the present tap position value to go to invalid (“----”)]; and (3) During automatic or manual operation the present tap position changes to “0”, but a neutral signal is not received. The No Neutral Sync signal is an attention signal, not a failure signal.

The TPI will satisfy the diagnostics routine upon power-up when: (1) The regulator is in neutral and the present tap position is “0”; (2) The present tap position is not “0” and the regulator is not in neutral, including when the tap position is not set correctly; and (3) When the regulator is in neutral and the present tap position is not “0” (TPI will selfcorrect and reset the tap position).

Source-side voltage

Without a source voltage input, some functions will indicate dashes when displayed. There are three methods for supplying a source-side voltage to the CL-6 control: a differential potential transformer (PT), an external sourceside PT, or source-side voltage calculation.

Differential voltage

The regulator may be designed and ordered with an internal differential potential transformer (IDPT). This is noted by the schematic on the voltage regulator nameplate. A differential

PT supplies the voltage difference between the source and load bushings of the voltage regulator. This differential voltage is then combined with the load voltage to provide the source-side voltage. When using an IDPT on an Eaton voltage regulator, the source voltage accuracy is within ±

1%.

External source voltage

An external source-side PT may be connected to the voltage regulator to supply a directly measured source voltage. To use an external source-side PT, the user must change Vin PT Configuration, FC 146, from the default

Vdiff Mode to Vin Mode. Using an external source-side PT may be desirable if the voltage regulators are in a closeddelta configuration. In a closed delta, the source voltage and percent regulation will only reflect the true system source values if an external source voltage is used. Voltage regulator performance is not affected by the difference between metering parameters when using an external source PT: the accuracy of the source voltage is dependent upon the accuracy of the PT.

Source-side voltage calculation

The CL-6 control has the ability to calculate the source-side voltage without a series-winding PT or an external PT.

When this feature is turned on, the control will use the load voltage from the main PT, the regulator type (Type A,

Type B, Type C or Type D), the tap position, and the internal impedance of the regulator to calculate the source-side voltage. This calculated source voltage is within ±1.5% of actual. Only the regulator type needs to be programmed into the control. The other values are already available to the control.

78 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Reverse power operation

Most voltage regulators are installed in circuits with welldefined power flow from source to load. However, some circuits have interconnections or loops in which the direction of power flow through the regulator may change. For optimum utility system performance, a regulator installed on such a circuit should have the capability of detecting reverse power flow and of sensing and controlling the voltage, regardless of the power flow direction.

The control has full reverse power capabilities. For fully automatic reverse operation, the source voltage must be available to the control. Refer to Source-Side Voltage in this section of the manual.

The control offers seven different response characteristics for reverse-power detection and operation. These characteristics are user-selectable by programming the Reverse Sensing Mode (FC 56). The seven modes are Locked Forward, Locked Reverse, Reverse Idle,

Bi-directional, Neutral Idle, Cogeneration, and Reactive

Bi-directional.

This section will separately explain each mode of operation.

Since the control retains the reverse metered demand values separate from the forward metered values, the metering will also be explained for each mode.

In determining power direction, the control senses the real component of the current (except in reactive bi-directional mode), then determines the current direction and magnitude in that direction. When the conditions indicate the power is flowing in reverse, the following parameters assume new values and the control operation is affected accordingly:

Load Voltage

Source Voltage Now sensed from what was previously the load voltage supply.

Load Current

Now sensed from what was previously the source voltage supply.

In the forward direction, the current is used directly as measured. In the reverse direction, the current is scaled to reflect the ratio difference between the source and load side of the regulator, according to this formula Q :

Locked forward mode

When FC 56 is set for Locked Forward, no source voltage is required. This mode is not intended to be used in applications where reverse power flow is possible.

METERING: Always operates in the forward direction, regardless of power flow direction. If reverse power occurs, the metering functions remain on the normal load side of the regulator—no reverse demand readings will occur.

OPERATION: (Figure 6-2) Always operates in the forward direction using the forward settings at FC 1, FC 2, FC 3,

FC 4, and FC 5. This allows operation down to zero current conditions since there is no forward threshold involved.

A safeguard has been built into the control to prevent misoperation in the event reverse power flow does occur.

If more than 2% (.004 A CT secondary) reverse current occurs, the control idles on the last tap position held and the band edge indicators will turn off. As the current flow returns to a level above this reverse threshold, normal forward operation resumes.

Band edge indicators are turned off and tap changing is inhibited when real component of current is greater than 2% reverse.

2% 0

Real Current (% of C.T. Primary)

Forward Operation =

Forward

Load

Current

Source

Voltage

Supply

Reverse Load Current =

Load Voltage Supply

Q Where source voltage supply and load voltage supply are in the reverse direction.

Based upon the new metered reverse values, the kVA, kW, kvar, and % buck/boost are now calculated.

Figure 6-2. Locked forward mode operation.

Locked reverse mode

When FC 56 is set for Locked Reverse, source voltage is required. This mode is not intended to be used in applications where forward power flow is possible.

METERING: Always operates in the reverse direction, regardless of power flow direction. If forward power occurs, the metering functions remain on the source (S bushing) side of the regulator and no forward demand readings will occur.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 79

OPERATION: (Figure 6-3) Always operates in the reverse direction using the reverse settings at FC 51, FC 52, FC

53, FC 54, and FC 55. This allows operation down to zero current conditions since there is no reverse threshold involved. A safeguard has been built into the control to prevent misoperation in the event forward power flow does occur. If more than 2% (.004 A CT secondary) forward current occurs, the control idles on the last tap position held and the band edge indicators will turn off. As the current flow returns to a level above this forward threshold, normal reverse operation resumes.

Normal Metering

Forward Scaling

Rev Pwr On

1% 0 1%

Current Level

Figure 6-4. Reverse idle metering.

Normal Forward

Metering

Rev Pwr Off

0 2%

Real Current (% of C.T. Primary)

Reverse =

Figure 6-3. Locked reverse mode operation.

Reverse idle mode

When FC 56 is set for Reverse Idle, a source voltage is required for metering only. This mode is recommended for installation where reverse power flow may occur, but a source voltage is not available.

METERING: (Figure 6-4.) A threshold level of 1% (.002 A) of the full load CT secondary current (.200 A) is used in setting the power direction. The metering will be forward until the current exceeds the 1% threshold in the reverse direction. At this time, the various parameters use the reverse settings and the Reverse Power indicator turns on.

The control continues metering in reverse until the current exceeds the 1% threshold in the forward direction, and then the parameter scaling reverts back to normal and the

Reverse Power indicator turns off.

OPERATION: (Figure 6-5.) The threshold for which the control switches operation is programmable at FC 57 over the range 1 to 5% of the rated CT current. When the real component of the current is above this threshold, the control operates in the normal forward direction. When current falls below this threshold, all tap changing is inhibited.

The control idles on the last tap position held before the threshold was crossed. The operational timer (time delay) is reset on any excursion below this threshold, and the band edge indicators turn off.

Tap changing is inhibited when real component of current is at or below the operation threshold, FC 57.

0 0T

Real Current (% of C.T. Primary)

Forward Operation =

OT=Operating Threshold, FC 57, 1-5%

Figure 6-5. Reverse idle mode* operation.

* Tap changing is inhibited and band edge indicators are turned off.

80 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Bi-directional mode

When FC 56 is set for Bi-directional, source voltage is required. This mode is recommended for all installations where reverse power flow may occur except where the source of reverse power is a cogeneration facility or independent power producer.

Reverse Metering

Reverse Scaling

Rev Pwr On

1% 0 1%

Current Level

Figure 6-6. Bi-directional, neutral idle and reactive bidirectional metering.

METERING: (Figure 6-6.) A threshold level of 1% (.002 A) of the full load CT secondary current (.200 A) is used in setting the power direction. The metering will be forward until the current exceeds the 1% threshold in the reverse direction. At this time, the various parameters use the reverse settings and the Reverse Power indicator turns on.

The control continues metering in reverse until the current exceeds the 1% threshold in the forward direction, and then the parameter scaling reverts back to normal and the

Reverse Power indicator turns off.

Normal Reverse

Operation FC 51-55

Normal Forward

Metering

Rev Pwr Off

Tap changing inhibited and band edge indicators are turned off.

Normal Forward

Operation FC 1-5

OT 0 OT

Real Current (% of C.T. Primary)

Reverse Operation = Forward Operation =

OT=Operating Threshold, FC 57, 1-5%

Figure 6-7. Bi-directional mode operation.

OPERATION: (Figure 6-7.)The control operates in the forward direction whenever the real component of the current is above the operator defined forward threshold

(FC 57). The control operates in the reverse direction, using the reverse settings at FC 51, FC 52, FC 53, FC 54, and

FC 55, whenever the current is above the operator defined reverse threshold (FC 57). When the current is in the region between the two thresholds, the control idles on the last tap position held before the current fell below the threshold.

The operational timer (time delay) is reset on any excursion below the threshold in either direction, and the band edge indicators turn off.

Neutral Idle mode

When FC 56 is set to Neutral Idle, a source voltage is required.

METERING: (Figure 6-6) A threshold level of 1% (.002 A) of the full load CT secondary current (.200 A) is used in setting the power direction. The metering will be forward until the current exceeds the 1% threshold in the reverse direction. At this time, the various parameters use the reverse settings and the Reverse Power indicator turns on.

The control continues metering in reverse until the current exceeds the 1% threshold in the forward direction, and then the parameter scaling reverts back to normal and the

Reverse Power indicator turns off.

OPERATION: (Figure 6-8) The control operates in the forward direction whenever the real component of the current is above the operation-defined forward threshold

(FC 57). When the current exceeds the operator-defined reverse threshold (FC 57) and is held for 10 continuous seconds, the control will tap to neutral. Neutral position is determined using Tap Position. If the tap position is not valid, neutral is determined using percent regulation (buck and boost). When the current is in the region between the two thresholds, the control idles on the last tap position held before the forward threshold was crossed. While tapping to the neutral position, if the current falls below the reverse threshold, the control continues to tap until neutral position is reached. The operational timer (time delay) is reset on any excursion below the forward threshold, and the band edge indicators turn off.

Band edge indicators are turned off and tap changing is inhibited when real component of current is at or below the operation threshold,

FC 57, in either direction.

Tap-to-Neutral =

OT 0 OT

Real Current (% of C.T. Primary)

Forward Operation =

OT=Operating Threshold, FC 57, 1-5%

Figure 6-8. Neutral idle mode* operation.

Cogeneration mode

When FC 56 is set for cogeneration, a source voltage is required.

In recent years, there have been a growing number of voltage regulator applications involving cogeneration by utility customers. The cogeneration mode was developed for the Cooper regulator control to satisfy the specialized needs of these applications. Normally, the desired operation of a regulator installed on a feeder involving cogeneration is to regulate the voltage at the customer substation during times of power flow into the customer site and to regulate the voltage at the regulator (on the same output side) during power flow into the utility grid. This is accomplished by simply not reversing the control sensing input voltage when reverse power is detected and by altering the line-drop compensation settings to account for this change in power flow direction. (See Figure 6-9.)

Line-Drop

Compensation

Difference

Stiff

Bus

Reverse

Reverse Metering with Reverse LDC

Rev Pwr On

Forward

Normal Forward

Metering

Rev Pwr Off

1% 0 1%

Current Level

Figure 6-10. Cogeneration metering.

Utility

Substation

Regulated

Voltage during

Reverse Power Flow

Customer

Substation

Regulated

Voltage during

Forward Power Flow

Cogeneration

Site

Figure 6-9.

Cogeneration regulation points.

METERING: (Figure 6-10.) Always operates in the forward direction except that load center voltage is calculated based upon the reverse line-drop compensation settings (FC 54 and FC 55) when the fixed 1% reverse metering threshold is exceeded. The Reverse Power indicator turns on when this reverse threshold is crossed. The forward line-drop compensation settings (FC 4 and FC 5) are used when the current exceeds the fixed 1% forward metering threshold.

The demand values acquired during reverse power flow are stored as reverse metered data, but the values are not scaled (to reflect the other side of the regulator) since the operating direction of the regulator never truly reverses.

OPERATION: (Figure 6-11.) The control always operates in the forward direction. The control will operate in the forward direction, but will use the reverse settings for line-drop compensation when the real component of the current is above the fixed 1% reverse metering threshold. The control will continue to use the reverse line-drop compensation settings until the real component of the current is above the fixed 1% forward metering threshold. The operational timer

(time delay) is not reset on any transitions between the application of forward and reverse line drop compensation settings.

Reverse Operations with Reverse LDC

Reverse LDC @ -1%

Forward Operations with Forward LDC

Forward LDC @ +1%

-5 -4 -3 -2 -1 0 1 2 3 4 5

Percent of C.T. Rating

Figure 6-11. Cogeneration mode operation.

82 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Reactive bi-directional mode

When FC 56 is set for Reactive Bi-directional, source voltage is required.

This mode is recommended for installations where reverse power flow may occur and the real component of the current is below the operator-defined threshold (FC 57), except where the source of reverse power is a cogeneration facility or independent power producer.

METERING: (Figure 6-12.) A threshold level of 1% (0.002 A) of the full load CT secondary current (0.200 A) is used in setting the power direction. The metering will be forward until the current exceeds the 1% threshold in the reverse direction. At this time, the various parameters use the reverse settings and the Reverse Power indicator turns on.

The control continues metering in reverse until the current exceeds the 1% threshold in the forward direction, then the parameter scaling reverts back to the normal and Reverse

Power indicator turns off.

OPERATION: (Figure 6-12.) The control determines which settings (forward/reverse) to use by sensing the real and reactive components of the current. The control operates in the forward direction whenever the magnitude of the reactive component of the current exceeds the operator-defined threshold (FC 57) in the negative direction. The control also operates in the forward direction if the magnitude of the real component of the current exceeds the operator-defined threshold (FC 57) in the positive direction while the magnitude of the reactive component of the current is between the operator-defined thresholds (FC 57). The control operates in the reverse direction using the reverse settings at FC 51, FC

52, FC 53, FC 54, and FC 55 whenever the magnitude of the reactive component of the current exceeds the operatordefined threshold (FC 57) in the positive direction. The control also operates in the reverse direction if the magnitude of the real component of the current exceeds the operator-defined threshold (FC 57) in the negative direction while the magnitude of the reactive component of the current is between the operator-defined thresholds (FC 57).

Tap changing inhibited when total current is within operating thresholds.

+

Reverse Operation =

OT 0 OT

Real Current (% of C.T. Primary)

Forward Operation =

Voltage limiter

The voltage-limiter feature is used to place high and low limits on the output voltage of the regulator. Voltage Limiter is equipped with both standard and Integrated Volt/Var

Control (IVVC) modes of operation; the IVVC options are used when voltage is being regulated through SCADA.

Voltage Limiter operates in either the forward or reverse directions.

When the standard modes are enabled, Voltage Limiter has one of the highest priorities of all operating functions and is overridden only when the control switch is set to Off or

Manual, when Auto Operation Blocking Status (FC 69) is set to Blocked, when an operator takes local control or through an inter-connected SCADA system. When the IVVC modes are used, Voltage Limiter will take an even higher priority by operating to limit voltage at the set limits, even when FC 69 is set to Blocked. In addition, it will limit SCADA tapping commands if the control voltage is either at a set limit or when the next tap change will take it over a limit.

The purpose of the Voltage Limiter is to protect the consumer from abnormally high or low voltages resulting from:

•

Large, rapid changes in transmission voltage

Abnormal loading of the feeder

Inaccurate regulator control settings (voltage level, bandwidth, and line-drop compensation)

Heavy loading by the first customer while there is a leading power factor on the feeder

•

Light loading at the first customer with heavy loading on the feeder at the same time

The appropriate high and low limits for the output voltage can be programmed into the control at FC 81 and FC 82, respectively. The feature is then activated by accessing

FC 80 and entering the desired operation: Off; High Limit only; High/Low Limits; IVVC High Limit Only; and IVVC High/

Low Limits. If low-voltage limiting only is desired, FC 80 should be set to both high and low limiting to enable this limit and the value programmed into FC 81 for the high limit can be set to some extreme number (such as 135) to prevent the high limit from activating.

The control has two response sensitivities. If the output voltage exceeds either the high or low limit by

3 V or more, the control samples the voltage for two seconds and then taps immediately to bring the voltage to the limit value. If the output voltage exceeds either the high or low limit by less than 3 V, the control samples the voltage for 10 seconds then taps to bring the voltage to the limit value. The 10-second delay is used to prevent false responses to transient conditions. The control uses the sequential method of tapping, a two-second pause between taps for voltage sampling, when bringing the voltage back to the limit value. Voltage Limiter High and Voltage Limiter Low indicators in the display indicate when either limit is active.

OT=Operating Threshold, FC 57, 1-5%

Figure 6-12. Reactive bi-directional mode operation.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 83

To avoid potential cycling of the regulator, set the high-and low-voltage limits at lest two volts above and below the upper and lower bandwidth limits. This will establish a

"grey zone" between the high-and low-voltage limits and the upper and lower limits. When the output voltage is within this "grey zone", the control will not perform any tap changes that would take the output voltage closer to the limit. If the voltage is directly on the inner edge of the grey zone, the control will allow one tap change to permit the voltage to enter the grey zone by as much as 0.7 V.

Voltage reduction

An ideal application for system load management is at the distribution voltage regulator. Voltage reduction capabilities within the regulator control permit it to trigger the regulator to reduce voltage during situations where power demands surpass the available capacity and where there are extraordinary peak loads. The control offers three modes of voltage reduction: Local/Digital Remote, analog

Remote/Latch, and analog Remote/Pulse. All modes operate for forward or reverse power flow conditions. For further information on the Local/Digital Remote mode, see below.

Analog Remote/Latch and Remote/Pulse are discussed in the Analog SCADA section starting later in this section of this manual.

All voltage reduction modes of the control work by calculating an effective set voltage as follows:

Effective Set Voltage = Set Voltage x [1- (% reduction)]

Example: If the set voltage = 123 V and voltage reduction of

4.6% is active, the regulator will regulate the compensated voltage to 117.3 V, that is, tap down 5.7 V.

When any mode of voltage reduction is in effect, the

Voltage Reduction indicator is turned on. Voltage reduction occurs after time out, as established by the time delay, FC

3 or FC 53, and the Control Operating Mode, FC 42. The percent reduction in effect is displayed at FC 71.

Local/digital remote mode

Voltage reduction can be performed by selecting the Local/

Digital Remote mode of operation at FC 70 and then entering into FC 72 the amount of reduction required as a percentage of the set voltage. To turn voltage reduction off, set FC 70 to “Off” or set FC 72 to 0%.

Soft ADD-AMP feature

This feature (FC 79) allows the user to set the regulator for the Soft ADD-AMP feature locally at the control as well as remotely through SCADA. The Soft ADD-AMP limits can be overridden by a local operator running the tap-changer in manual mode of operation. This is not the case for the “hard”

ADD-AMP limit switches on the position indicator face. The

Soft ADD-AMP feature can be overridden via digital SCADA if the ADD-AMP mode is set to Remote Override.

In addition to using to the standard Soft ADD-AMP setting using FC 79, Adaptive ADD-AMP is available as an advance control feature. It allows the control to sense system and voltage regulator conditions and turn on the Soft ADD-AMP feature in reaction to specified conditions. Adaptive

ADD-AMP is controlled by the Programmable Input and

Output (PIO) capabilities of the CL-6 control which are described in more detail in the Advanced Control Features section of this manual.

Supervisory control and data acquisition (SCADA)

With its tap-changer, potential transformer, and current transformer, the regulator is a likely candidate for a

Supervisory Control and Data Acquisition system where the utility needs to have centralized voltage control for peak shaving, energy conservation, or other purposes.

Regulators can be connected to Analog SCADA systems where the regulator is controlled by contact closure and the feedback is via a voltage transducer connected to the voltage sensing circuit of the regulator control. The CL-6 control has a number of features which allow it to function well on these types of systems. For details, see Analog

SCADA in this section.

The CL-6 control is also capable of real-time digital two-way communication. For details, see Digital SCADA in this section.

The control is also well suited to the user who does not have a SCADA system but does have a need for detailed information about the bus or feeder loading. For details, see

Data Retrieval and Settings Upload.

Data retrieval and settings uploading

The Com 1 port of the CL-6 control is a DB9-style RS-232 port located on the front of the control. It allows for temporary connection to a PC. Using ProView NXG software, the connection allows the user to reset all metering and tap position maximum and minimum values, upload settings which are specific to the control I.D. number, and view data. The entire control database may be downloaded.

Analysis of the data allows the user to verify the control settings and analyze the conditions of the feeder as follows:

• At the moment of the downloading (instantaneous metering)

• Maximum and minimum demand values since last reset

(time-tagged demand metering)

• The profile of salient parameters (profile recorder)

The Channel #1 baud rate is selectable at 300, 600, 1200,

2400, 4800, 9600, 19200, and 38400 Baud. It is factory set to 9600 Baud.

84 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Digital SCADA

Refer to the Advanced Control Features section for information on communications and physical interface.

Local operator security

Through the communications channel, the SCADA master may read the CL-6 control data points, write to certain data points, or reset certain data points. The technique of writing to a data point is used for performing operations such as changing settings like Set Voltage or Reverse Power Mode, inhibiting automatic operation, or controlling the tap-changer motor, etc. Following is a discussion of the levels of security used to protect the local operator.

Supervisory switch

The CL-6 control is equipped with a Supervisory On/Off switch. When this switch is in the on position, SCADA may perform the normal read, write, and reset activity. When the switch is in the off position, SCADA may only read the database. This affords protection to the local operator at the front panel, while allowing the system operator to maintain surveillance.

Control switch

If the local operator switches the control switch (Auto/

Remote-Off-Manual) to either Off or Manual, the control internal circuitry prohibits SCADA from controlling the tapchanger motor. Resets and other writes are allowed.

Active control security level

If the local operator changes the control active security level to level 1 or above, or security override is set to override 1 or higher, this does not inhibit any SCADA activity. To inhibit

SCADA writes and resets, the local operator should turn the

Supervisory switch to Off.

Note: A local operator wishing to check automatic operation should check to make sure that the Blocking Status,

FC 69, is set to Normal.

Note: Changes to any of the communications parameters take effect immediately, as compared to the CL-4C control which required that the power be turned off, then on, to reset those parameters on the separate protocol communications board.

Analog SCADA

The CL-6 control can be used with Analog SCADA systems.

Discrete inputs 1 through 3 have been programmed by default for use as inputs for voltage reduction and Tap-to-

Neutral. The back panel has provisions for remote motor control, auto-inhibiting, and transducer connections.

Discrete voltage reduction

During voltage reduction, the control remains in the

Automatic mode. See Figures 6-13 and 6-14 for the location of the physical connections. For either of the two modes,

Remote Latching and Pulse, a nominal 120 Vac needs to be supplied to either or both discrete inputs 1 and 2 (pins

10 and 11, respectively). Discrete inputs 1 and 2 have been configured as voltage reduction inputs 1 and 2 by default.

The user may modify this configuration; see the Advanced

Control Features: Programmable Input and Output section of this manual.

If the user supplies dry contacts, the voltage should be obtained from Pin 14 of the discrete I/O port. This whetting voltage is only available when the control switch is in the

Auto/Remote position. If the user supplies whet contacts, the connections should be as shown in Figure 6-13.

Analog remote/latching mode

This feature is set at FC 70. Up to three independent values of voltage reduction (VR) are possible. Levels 1, 2, and 3 are programmed at FC 73, FC 74, and FC 75, respectively. VR 1 activates the VR programmed at FC 73; VR input 2 activates the VR programmed at FC 74; and latching both contacts activates the VR programmed at FC 75. Each of these function codes may be set from 0.1 to 10.0%.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 85

Analog remote/pulse mode

This feature is set at FC 70. The same contacts are used for this mode as shown in Figures 6-13 and 6-14, but the contacts are pulsed (momentarily closed) rather than latched closed. Each closure and waiting period between closures is expected to be at least 0.25 seconds in duration.

The number of steps of pulsed reduction, up to 10, is programmed at FC 76. The percent reduction per step is programmed at FC 77. Starting at zero percent reduction, every time the contact 1 is pulsed, one step of reduction is added to the accumulated total.

EXAMPLE: If the number of steps is 3 and the percent per step is 1.5%, four successive pulses of voltage reduction will cause the following percentages of reduction: 1.5, 3.0,

4.5, and 0. Pulsing to one step higher than the programmed number returns the reduction to zero. Also, any time VR input 2 is pulsed, the reduction returns to zero. Input 1

Input 2

Figure 6-13. Dry contact connections for remote latching and pulse mode.

125 Vac to Terminal G

Figure 6-14. Whet contact connections for remote latching and pulse modes.

Tap-to-neutral

When activated, the tap-to-neutral feature will automatically take the voltage regulator to the neutral position and then block automatic operation, until the feature is disengaged. By default, to activate the tap-to-neutral feature, FC 170 is set to

“On” and 120 Vac is applied to discrete input 3. The setting at FC 170 enables or disables the tap-to-neutral function.

The Programmable Input/Output (PIO) tap-to-neutral turns on or off the feature. By default, a PIO equation has been written so that discrete input 3 activates the PIO tap-toneutral feature. For additional information on PIO, see

Programmable Input and Output in the Advanced

Control Features section of this manual.

86 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Remote motor control and auto inhibit

control back panel, is supplied for user-connections for Auto Inhibit (blocking) and Motor Control. See

Figure 6-15. When the motor is controlled remotely, it is necessary to inhibit automatic operation. To control Auto Inhibit remotely, remove the jumper between terminals 4 and 5 and supply a nominal

120 Vac to terminal 5. This will inhibit automatic operation.

To remotely raise or lower the tap-changer, the appropriate set of contacts is momentarily closed. If user-provided interposing relays are used, such that raise and lower contact closure cannot occur simultaneously, the operator should make a permanent connection from TB2-V9 to TB8-2.

G HS R1 L1 NL DHR VS V5 G TB1

TB2 - V9

TB8

1 2 3 4 5 6 7

Raise Lower

Power from Pin 14,

PIO Port

8 7 6 5 J V9 V7 BR G VS VM C1 C3 HS R3 L3 NL DHR TB2

Rear Panel

Figure 6-15. Auto inhibit and remote motor control connections.

Alternate configuration

The CL-6 control panel typically operates with one set of configuration settings that are programmed or changed through the keypad or one of the available communications channels using ProView NXG software (see

Communications in the Control Accessories section of this manual for more information on ProView NXG software).

The Alternate Configuration mode allows for the CL-6 control to be programmed with an additional set of configuration settings that can then be activated at FC 450. The Alternate

Configuration status can be monitored at FC 451 and will display either Active or Inactive.

When the Alternate Configuration mode is activated using FC 450, the set of alternate configuration settings will become active and will be used as the basis for the operation of the control. The control parameters included in the set of Alternate Configuration settings are: Forward

Direction (FC 1 through FC 5), Reverse Direction (FC 51 through FC 55), Auto-Block Status (FC 69), Reverse Power

Mode (FC 56), Voltage Limiter (FC 80 through FC 82),

Voltage Reduction (FC 70 and FC 72 through FC 75), Tap-To-

Neutral (FC 170) and Soft ADD-AMP (FC 79 and FC 175 through FC 176).

Alternate Configuration settings can be entered using two methods: 1) Activate the Alternate Configuration mode by turning it on at FC 450 and then set the individual settings using each function code. 2) Using ProView NXG software, enter the Alternate Configuration settings in the Alternate

Configuration Setting screen and load the settings using one of the communications channels.

When the control is in the Alternate Configuration mode, the display for each of the affected control parameters will display the statement “(AltConfig)” at the bottom. This will indicate that the alternate configuration setting is active and in use for control operation (see the example below).

001 Forward

Set Voltage

120.0 Volts

(AltConfig)

When the motor is controlled remotely, it is necessary to inhibit automatic operation. To control Auto Inhibit remotely, supply a nominal 120 Vac to terminal BR (Blocking Relay) on

TB3. This will inhibit automatic operation.

To remotely raise or lower the tap-changer, the appropriate set of contacts is momentarily closed. A user provided interposing relay is recommended, such that the raise and lower contact closure cannot occur simultaneously. A

120 Vac voltage is required at R1 for raise or L1 for lower.

Whetting voltage can be obtained from terminal TB3-V9.

When the Metering-PLUS Comp Voltage button is pressed, it will display “AltConfig Active” on the bottom line as shown in the example below.

Comp Voltage 120.0

Band 119.0-121.0

Using Func 1-5

AltConfig Active

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 87

Auto-restore local (ARL)

Two additional functions that can be enabled at FC 450 are

Auto-Restore Local Heartbeat (ARLH) and Auto-Restore

Local Comms (ARLC). When SCADA communications are being used to modify basic configuration settings, enabling

Auto-Restore Local will allow the control to revert control settings modified through SCADA communications back to the original settings programmed into the control. With

ARLH, the settings will revert when a heartbeat signal is lost or discontinued. For ARLC, the settings will revert when a communications signal is lost. The settings that are affected by ARL are the same as those listed for Alternate

Configurations. When either ARL function is active, FC 451 will display Active.

For more information on setting up ARL with SCADA communications, contact your Eaton representative.

User-provided Remote

Voltage Reduction Module

Relay

Programmable input/output (P.I.O.)

Alternate Configurations settings can be enabled using P.I.O.

In order to enable Alternate configuration settings using

P.I.O., the Alternate Configuration setting (FC 450) must be set to P.I.O. Equations must then be created using CCI software which program the conditions under which Alternate

Configuration settings will become active. When Alternate

Configuration settings are active due to P.I.O. logic, the status at FC 451 will display Active.

For more information on enabling Alternate Configuration settings using P.I.O., contact your Eaton representative.

Transducer connections

Refer to Figure 10-4. To monitor the load voltage (forward direction), a transducer, nominal 120 Vac input, may be connected as follows: Connect the transducer hot lead to terminal V4 on TB1 and its ground lead to G on TB1. A current transducer, 200 mA input, may be connected as follows: Close knife switch C; remove the jumper between

C2 and C4 on TB1; connect the transducer hot lead to C2 and its ground lead to C4; and open knife switch C.

Common V(IN)

Remove Jumper

G HS R

NL DHR V

Figure 6-16. Typical user provided “Fooler

Voltage” module.

Fooler voltage scheme

V(OUT)

Using this method, the voltage sensed by the control is raised, thereby “fooling” the control into reducing the voltage during its normal automatic operation. This method can be used with the CL-6 Series controls. A VR module, as shown in Figure 6-16, is usually supplied by the Remote

Terminal Unit (RTU) manufacturer. The VR module is usually a tapped auto-transformer with a pulse-activated indexing relay. When connected to the control back panel as shown, the voltage sensed by the control is raised as the module is pulsed to higher taps.

Since this method keeps the control in automatic operation,

Auto-Inhibiting is not used. An advantage of this method is that it can be applied to many different models of controls from many manufacturers. A disadvantage of this method is that while VR is activated, the measured load voltage is incorrect, as are all other calculated metering values which use the load voltage. To avoid the effects of metering inaccuracy, the Pulse Mode of VR should be used.

88 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Section 7: Advanced control features

Voltage Limiter High

Out-Of-Band High

Out-Of-Band Low

Voltage Limiter Low

Tapping Blocked

Reverse Power

Voltage Reduction

Comp

Voltage

Load

Voltage

Load

Current

Tap

Position

Figure 7-1. Operation analysis using Metering-PLUS feature.

Metering-PLUS feature

The Metering-PLUS feature was designed to allow immediate access to basic control information. On the control keypad, four keys display an asterisk (*), identifying them as Metering-PLUS* keys. These keys access information on compensated voltage, load voltage, load current, and tap position.

Compensated voltage

When the *Comp Voltage key is pressed, the LCD will display the following information.

The first line displays a live representation of the compensated voltage. The compensated voltage is available at FC 8.

The second line is used to display the in-band compensated voltage range. The voltage range is dependent on four separate parameters: operating mode, metering power direction, set voltage, and bandwidth in the corresponding metering power direction.

The third line specifies the range of configurable function codes that are used to compute the in-band compensated voltage range and the corresponding time delay.

The Out-of-Band High and Out-of-Band Low LEDs are used to indicate an out-of-band condition.

EXAMPLE 1:

Comp

Voltage

Comp Voltage

Band

Using Func

125.0

119.0-121.0

1-5

•

Compensated Voltage = 125.0 V

Fwd. Set Voltage = 120.0 V

Fwd. Bandwidth = 2.0 V

Control experiencing: Forward Power Flow

89 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

EXAMPLE 2:

Comp

Voltage

Comp Voltage

Band

Using Func

115.0

108.0-112.0

51-55

•

Compensated Voltage = 115.0

Rev. Set Voltage = 110.0 V

Rev. Bandwidth = 4.0 V

Control experiencing: Reverse Power Flow

EXAMPLE 3:

Comp

Voltage

1 Comp Voltage

Band

123.0

119.0-121.0

Using Func 1-3,54,55

EXAMPLE 2:

Load

Voltage

2 Load Voltage

Limiter

115.0

121.0

•

Load Voltage = 115.0 V

Voltage-Limiting Mode = Only High Limit Active

High Voltage Limit = 121.0 V

EXAMPLE 3:

Load

Voltage

Load Voltage

Limiter Off

115.0

•

Compensated Voltage = 123.0 V

Cogeneration Mode

Fwd. Set Voltage = 120.0 V

Fwd. Bandwidth = 2.0 V

•

Control experiencing: Reverse Power Flow

Note: When operating in the Cogeneration Mode, metering always operates in the forward direction except that load center voltage is calculated based upon the line-drop compensation settings when the fixed 1% reverse metering threshold is exceeded.

Load voltage

When the *Load Voltage key is pressed, the LCD will display the following information:

The first line displays a live representation of the load voltage.

The load voltage is available at FC 6.

The second line displays the voltage limits to be applied by the Voltage-Limiting feature (see FC 80). If a voltage range is displayed, a high and low limit is enabled. A single value implies that only the high limit is active.

The Voltage Limiter High and Voltage Limiter Low LEDs are used to indicate the voltage limiter is active.

EXAMPLE 1:

Load

Voltage

2 Load Voltage 115.0

Limiter 119.0-121.0

•

Load Voltage = 115.0 V

Voltage-Limiting Mode = Off

Load current

When the *Load Current key is pressed, the LCD will display the following information:

The first line displays a live representation of the load current. The load current is available at FC 9. This line also includes an abbreviation of the power flow direction: "Fwd" corresponds to Forward, "Rev" corresponds to Reverse.

The second line displays the current threshold point at which the control switches operation, either from forwardto-reverse or reverse-to-forward. The current threshold is the product of the CT Primary Rating, and the Reverse

Threshold percentage.

EXAMPLE: A 328 A regulator utilizing a CT with a 400 A primary rating and a 3% reverse threshold value would yield a 12 A current threshold.

The third line displays the operating mode: Locked Forward,

Locked Reverse, Reverse Idle, Bi-directional, Neutral Idle,

Cogeneration, or Reactive Bi-directional

If automatic operation is blocked, the fourth line displays the blocking condition. If multiple blocking conditions exist, the blocking condition with the highest precedence will be displayed. Refer to Table 7-1 for the blocking condition priority levels.

The condition illustrated in Example 1 indicates that automatic operation is inhibited due to an open condition that exists between terminals 4 and 5 of terminal block 8.

•

Load Voltage = 115.0 V

Voltage-Limiting Mode = High and Low Limits Active

High Voltage Limit = 121.0 V

Low Voltage Limit = 119.0 V

90 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

TABLE 7-1 Blocking Condition Priority Levels

Level (1 = Highest)

Automatic Blocking Condition

Control Function Switch is in Off or Manual position.

Tap-to-Neutral enabled.

Voltage applied to terminal 5, TB 8.

Blocked due to configuration setting found at FC 69.

Blocked due to reverse power flow mode.

EXAMPLE 1:

Load

Current

3 Load Current 600 Fwd

Current Threshold 12

Mode Bi-directional

Blocked: TB8-4&5

EXAMPLE 1:

Tap

Position

LCD display text (line 4)

Blocked:Cntrl Switch

Blocked:Tap-To-Neutr

Blocked: TB8-4&5

Blocked:Func Code 69

Blocked:Rev Pwr Mode

Tap Position 8

SOFT-ADD-AMP -12, 14

P.I. ADD-AMP -14, 16

•

Load Current = 600 A

Forward Power Flow

Reverse Threshold Current = 12 A

Bi-directional operating mode

Voltage applied to Terminal 5, Terminal Block #8. (See

Remote Motor Control & Auto Inhibit.)

•

Present tap position = 8 Raise

Soft ADD-AMP feature = On

Soft ADD-AMP feature lower tap limit = -12

Soft ADD-AMP feature upper tap limit = 14

User-configured P. I. ADD-AMP lower tap limit = -14

User-configured P. I. ADD-AMP upper tap limit = 16

EXAMPLE 2:

Load

Current

3 Load Current 200 Rev

Current Threshold 2

Mode Bi-directional

EXAMPLE 2:

Tap

Position

4 Tap Position

At Limit

-12

SOFT-ADD-AMP -12, 14

P.I. ADD-AMP -14, 16

•

Load Current = 200 A

Reverse Power Flow

Reverse Threshold Current = 2 A

Bi-directional operating mode

Automatic tapping is not inhibited

Tap position

•

Present tap position = 12 Lower

Tap Changer at ADD-AMP Limit

Soft ADD-AMP feature = On

Soft ADD-AMP feature lower tap limit = -12

Soft ADD-AMP feature upper tap limit = 14

User-configured external lower tap limit = -14

User-configured external upper tap limit = 16

When the *Tap Position key is pressed, the LCD will display the following information:

The first line displays the present tap position. Neutral tap position is represented as a "0". Tap positions lower than zero are denoted with a negative sign; tap positions above zero do not carry a sign.

The second line is used to indicate when the tap changer has reached a Soft ADD-AMP limit or a user-configured

Position Indicator (P.I.) ADD-AMP limit. In Example 1, the second line is blank because the tap changer is not at an

ADD-AMP limit.

If the Soft ADD-AMP feature is enabled, the third line is used to display the corresponding Soft ADD-AMP limits.

The fourth line is used to display the physical P.I. ADD-AMP settings corresponding to the physical position indicator.

Note: Physical ADD-AMP always takes precedence over soft.

•

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 91

EXAMPLE 3:

*

Tap

Position

4 Tap Position 0

P.I. ADD-AMP -14, 16

•

Present tap position = Neutral

Soft ADD-AMP feature = Off

User-configured external lower tap limit = -14

User-configured external upper tap limit = 16

EXAMPLE 4:

*

Tap

Position

4 Tap Position

At Limit

SOFT-ADD-AMP -12, 14

P.I. ADD-AMP -14, 14

•

Present tap position = 14

Tap Changer at ADD-AMP Limit

Soft ADD-AMP feature = On

Soft ADD-AMP feature lower tap limit = -12

•

Soft ADD-AMP feature upper tap limit = 14

User-configured external lower tap limit = -14

•

User-configured external upper tap limit = 14

Note: Both the Soft ADD-AMP feature and the physical

ADD-AMP settings on the Position Indicator will prevent any further lower tap changes. This conclusion is based on the assumption that the

P.I. ADD-AMP configuration settings, entered by the user, match the physical position indicator limit settings.

EXAMPLE 5:

*

Tap

Position

Tap Position

At Limit

P.I. ADD-AMP -14, 12

•

Present tap position = 15

Tap Changer above ADD-AMP Limit

Soft ADD-AMP feature = Off

User-configured external lower tap limit = -14

•

User-configured external upper tap limit = 12

Note: User-configured upper "P.I. ADD-AMP" tap limit does not match the upper physical tap limit setting on the Position Indicator. Assuming the present tap position is correct, the physical upper P.I. limit must be at position 16.

This condition may occur if the user-configured

P.I. ADD-AMP limits do not match the physical P.I.

ADD-AMP tap position settings. In this example, the regulator is at tap position 15, yet the user-configured upper P.I. ADD-AMP limit is 12. The control will advance the tap-changer beyond the user-configured

P.I. ADD-AMP limit settings provided the actual mechanical P.I. limit switches do not prevent the operation. If the tap-changer is at, or beyond, either user-configured "P.I. ADD-AMP" limit, At Limit will appear on the second line.

Compact flash card

The CL-6 series control has a compact flash (CF) card port located in the front of the control. This port allows the operator to import settings into the control or to save settings and data from the control. Also, firmware upgrades are loaded with a flash card. (Firmware is the software resident in the control that provides processing algorithms and functionality to the hardware. Firmware upgrades are supplied by the factory when revisions are necessary.)

CF cards, readily available at most major electronics retailers, are widely accepted memory devices. The CF card port was designed and tested with a SanDisk

CompactFlash ®

® Type I

card. Other manufacturers cards may work, but performance was not evaluated. When the controls save data to the CF card, the files range in size from 20 to 90 KB, depending on what is being saved. While any size CF card may be used, a standard 32 MB CF card is capable of storing hundreds of such files.

The compact flash card replaces the Data Reader. An external flash card reader/writer is necessary to allow for the data to be imported into a computer. Determine the appropriate type of reader/writer, available at most major electronics retailers, for your computer’s configuration.

92 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Figure 7-2. Inserting compact flash card into port.

By inserting a CF card into the port, the operator has the ability to easily transfer information to and from the control.

Use care when inserting the CF card into the card port; do not attempt to force the card into position. Align the card in the guide, with the connector toward the control; refer to

Figure 7-2. When the CF card is properly seated, the Flash

Card Active LED will blink.

If a CF card is not inserted and one of the CF functions is accessed, an error message will appear on the display.

Flash card functions

Data Writer, FC 350

The Data Writer saves all of the data within the control

(metering data, settings, configuration, etc.) in a file with the format "regulator ID-reading #.DAT.

EXAMPLE : 12345-001.DAT

After inserting a CF card, access FC 350. Press Enter. The control LCD will display (CONFIRM). Press Enter again to confirm. The Flash Card Active LED will illuminate, the

LCD will display (WRITING...), and the control will write the data to a file on the CF card. Upon completion, the control will display (WRITING COMPLETE). The CF card may be removed after this message is displayed.

If the command is completed with errors, a (WRITING

FAILED) message is displayed on the fourth line of the LCD.

If the command is in progress and is aborted via the ESC key, a (WRITING ABORTED) message is displayed on the fourth line of the LCD.

Save Standard Configuration, FC 354

The Save Standard Configuration function saves all of the settings and configuration data to a file labeled "STANDARD.

CFG".

EXAMPLE: STANDARD.CFG

After inserting a CF card, access FC 354. Press Enter. The control LCD will display (CONFIRM). Press Enter again to confirm. The Flash Card Active LED will illuminate, the

LCD will display (SAVING...), and the control will save the configuration data to the CF card. Upon completion, the control will display (SAVING COMPLETE). The CF card may be removed after this message is displayed.

If the command is completed with errors, a (SAVING

FAILED) message is displayed on the fourth line of the LCD.

If the command is in progress and is aborted via the ESC key, a (SAVING ABORTED) message is displayed on the fourth line of the LCD.

Save Custom Configuration, FC 353

The Save Custom Configuration function saves all of the settings and configuration data to a file with the format

"regulator ID-reading #.CFG".

EXAMPLE : 12345-001.CFG

After inserting a CF card, access FC 353. Press Enter. The control LCD will display (CONFIRM). Press Enter again to confirm. The Flash Card Active LED will illuminate, the

If the command is completed with errors, a (SAVING

FAILED) message is displayed on the fourth line of the LCD.

If the command is in progress and is aborted via the ESC key, a (SAVING ABORTED) message is displayed on the fourth line of the LCD.

Load Standard Configuration, FC 352

The Load Standard Configuration function loads all of the settings and configuration data from the file labeled with the file titled "STANDARD.CFG".

EXAMPLE : STANDARD.CFG

After inserting a CF card, access FC 352. Press Enter. The control LCD will display (CONFIRM). Press Enter again to confirm. The Flash Card Active LED will illuminate, the

LCD will display (LOADING...), and the control will load the configuration data from the CF card. Upon completion, the control will display (LOADING COMPLETE). The CF card may be removed after this message is displayed.

If the command is completed with errors, a (LOADING

FAILED) message is displayed on the fourth line of the LCD.

If the command is in progress and is aborted via the ESC key, a (LOADING ABORTED) message is displayed on the fourth line of the LCD.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 93

Load Custom Configuration, FC 351

The Load Custom Configuration function loads all of the settings and configuration data from the file labeled with the file format "regulator ID-reading #.CFG".

EXAMPLE : 12345-001.CFG

After inserting a CF card, access FC 351. Press Enter. The control LCD will display (CONFIRM). Press Enter again to confirm. The Flash Card Active LED will illuminate, the

If the command is completed with errors, a (LOADING

FAILED) message is displayed on the fourth line of the LCD.

If the command is in progress and is aborted via the ESC key, a (LOADING ABORTED) message is displayed on the fourth line of the LCD.

Format Compact Flash Card, FC 355

The Format Compact Flash Card function effectively erases all data on a CF card and prepares the card for use in the

CL-6 series control. A card that has not been formatted for use on the CL-6 control may not work on the control (i.e., cards used to store digital photos, etc.)

After inserting a CF card, access FC 355. Press Enter. The control LCD will display (CONFIRM). Press Enter again to confirm. The Flash Card Active LED will illuminate, the

LCD will display (FORMATTING...), and the control will format the CF card. Upon completion, the control will display (FORMATTING COMPLETE). The CF card may be removed after this message is displayed.

If the command is completed with errors, a (FORMATTING

FAILED) message is displayed on the fourth line of the LCD.

If the command is in progress and is aborted via the ESC key, a (FORMATTING ABORTED) message is displayed on the fourth line of the LCD.

Other compact flash card functions

There are several other Compact Flash Card Functions available using FC 357 through FC 368. Each of the functions allows for saving or loading subsets of control and communications settings either as standard or custom operations. The load and save functions along with the standard and custom configurations have the same meaning as described for FC 351 through 354.

FC 357 through FC 360 apply to the loading and saving of standard and custom Basic Configuration settings. Basic

Configuration settings include all basic voltage regulation settings entered using the control key pad except for communications settings.

FC 361 through FC 364 apply to the loading and saving of standard and custom Advanced Feature Configuration settings. Advanced Feature Configuration settings include settings for Histograms, Alarm and Event Recorders, Profile

Data, Programmable I/O and Leader/Follower.

FC 365 through FC 368 apply to loading and saving of standard and custom Communication Configuration settings. Communication configuration settings include all settings involving communications. A list of these settings can be found in Table 5-2 under *Features/

*Communications.

See the list of functions in Table 5-3.

94 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Communications

Communicate with the CL-6 control using ProView NXG software or protocols such as DNP3 or 2179. The ProView

NXG software, used with a PC, can provide temporary local connection to the control.

Communication ports

There are three physical communications ports on the CL-6 control.

The communication port Com1 is for use as a temporary local communication connection to the control. Connection is made to Com1 by using a standard 9-pin RS-232 cable to the RS-232 DCE, female, 9-pin connector, located on the front of the control. The port settings are configured at FC

60 through FC 67, FC 266 and FC 267. When using ProView

NXG software, modifications are not normally needed to these settings.

The communication port Com2 is for use as a permanent communication connection to the control. Connection is made by using an optional communication accessory card mounted on the back panel within the control enclosure such as the Fiber Optic/RS-232 accessory. The port settings are configured at FC 160 through FC 169, FC 268 and FC

269.

The communication port Com3 is for use as a secondary permanent communication connection to the control. The port shares its data source with the Com1 port and will be inactive if a local connection is made to the Com1 port.

Com2 and Com3 may be active simultaneously and can be communicating to two separate master stations. The settings for this port are configured at FC 60 through 67.

There are two logical DNP3 addresses for each port.

Normally the port’s remote address 2 is used only by the

ProView NXG software for configuration. The port’s remote address 1 is designed for interfacing with master stations. It is possible to have two separate masters communicating to the device through a single communication port.

Depending upon the communication system into which the control is being implemented, communication timing may need to be modified. The sync time parameter defines a period of time that the control must idle before recognizing the start of a message. The amount of sync time may need to be increased when the control is placed in a loop (ring) configuration with more than three controls; refer to Figures

7-3 and 7-4.

Protocols

There are two protocols resident in the CL-6 control: 2179 and DNP3. While only one protocol can be selected for a single Com port at a time, the two com ports can be set to different protocols. Both of the protocols are highly configurable.

The 2179 ordinal points map is selected at FC 266 and the

DNP3 data dictionary is selected at FC 267. By changing from the default CL-6 control to either the CL-5E or CL-5D control, the control will look just like a CL-5E or CL-5D control to a master station. Therefore, the master does not need to be upgraded unless some of the new functions, not available in the older controls, need to be accessed through remote communications.

A “USER” 2179 ordinal points map setting and a “USER”

DNP3 data dictionary setting are also available. These can be configured via remote communications, including

ProView NXG software. This allows the user to create a map to match other existing equipment or optimize for their system as needed. DNP3-related parameters, including

Class configuration and deadbands, may also be configured through communications.

Programmable input and output

Programmable Input and Output (Programmable I/O or PIO) is a powerful tool since it provides the user with the means to configure general logic equations. These logic equations can be used to perform discrete SCADA functions, modify control function, or add communications data points. PIO can be configured via digital communications software, including ProView NXG software. PIO configuration is available via 2179 or DNP3 digital communications protocols.

To configure PIO, the user first selects the output to be performed. Then the logical form of the equation is chosen.

Standard AND, OR logical operators may be used in the equation. A more advanced user may also choose to add

If-Then, If-Else, If-Else-If, and Timer-based conditional forms within the programmable I/O feature. Lastly, the inputs to the equation are chosen. A total of eighteen different logical inputs may be included in one expression. The inputs or outputs of the expression may be logically inverted.

SYNC TIME

D RECEIVE

DATA MESSAGE

D TRANSMIT

DATA

MESSAGE

Figure 7-3. Message received at CL-6A control; message is for the CL-6A control.

D RECEIVE

DATA

MESSAGE

SYNC TIME

MESSAGE

Figure 7-4. Message received at CL-6 control; message is not for the CL-6 control.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 95

Inputs and outputs

Outputs

PORT CONTROL

Discrete Outputs (General Purpose Output 1-4)

User-Defined LED

Tap-changer control (Raise, Lower, Tap-to-Neutral)

Voltage Reduction Input 1 and 2

PMT Mode B Slave Input

Enable Histograms, Profiler, Events, or Alarms

User Forms 1-20

User Intermediate Equations 1-4

LoopShare Enabled

Leader/Follower Enabled

Soft ADD-AMP

AltConfig

Inputs

MODULE STATUS (CONTROL-PROCESSOR PERCEIVED

STATES)

Active Alarms

Status Indicators (Tapping Blocked, Reverse Power, etc.)

Control Function Status

Tap At Neutral

No Input Volt Detected

No Output Volt Detected

PMT Status

System Errors

MODULE CONTROL (STATES DECIDED UPON BY THE

CONTROL CPU)

Features Enabled (Events, Alarms, Histograms, Profiler)

Supervisory Active

Tap-To-Neutral Input Active

Analog Voltage Reduction 1 Input Active

Analog Voltage Reduction 2 Input Active

PMT Mode B Slave Input Active

Loop Share Enable

Leader Follower Enable

Loop Share Active

Port 1 Tagged

Port 2 Tagged

Port 3 Tagged

PORT STATUS

Port 1 (Physical Input states)

Drag Hand Reset On

Neutral Position

Blocking Relay

Discrete Inputs (General Purpose Inputs 1-4)

Tap Raise Switch Active

Tap Lower Switch Active

Supervisory Switch On

Power Switch is Internal

Power Switch is External

Control Function Switch Status (Auto, Manual, Off)

Port 1 PMT Mode B Master Output

Port 2 (Command from communications port 2)

Tap Raise

Tap Lower

Tap-To-Neutral

Features Enabled (Events, Alarms, Histograms, Profiler,

Loop Share, Leader Follower)

Digital Communications User Inputs (00 to 32)

Port 3 (Command from communications port 1 or 3)

Tap Raise

Tap Lower

STATUS ALARMS

All available Status Alarms

DATA ALARMS

All available Data Alarms

PORT CONTROL

Discrete Outputs (General Purpose Output 1-4)

User-Defined LED

Tap-changer control (Raise, Lower, Tap-to-Neutral)

Voltage Reduction Input 1 and 2

PMT Mode B Slave Input

Features Enabled (Histograms, Profiler, Events, Alarms, Loop

Share, Leader Follower, Soft ADD-AMP, AltConfig)

User Forms 1-20

User Intermediate Equations 1-4

96 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Discrete inputs and outputs (auxiliary

I/O)

The CL-6 control provides the user with four discrete inputs and four discrete outputs (Form C contacts); see Figures 7-6 and 7-7. The user can program the CL-6 control to use the discrete input states, as well as other internal logic conditions, to determine the operation of the control.

Likewise, the user can program the CL-6 control to toggle the discrete output states based on internal control logic.

Note: If the CL-6 control is being applied in a CRA application, the user may configure discrete inputs

#1 through #3. The fourth discrete input must be reserved for use by the control.

EXAMPLE :

A utility noticed that the control function switch and supervisory switch were being left in the incorrect positions for their normal operation. The utility chose the User-

Defined LED to be the output of a PIO equation. They used a standard equation with the logical OR operator.

Lastly, they chose inputs as the Supervisory Switch On

(Inverted) and the Control Status Switch Auto/Remote

(Inverted). Refer to Figure 7-5.

Figure 7-6. Discrete input and output connector.

Supervisory On

Control Switch Auto/Remote

Figure 7-5. Logic diagram for the I/O example.

OR

User LED On

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 97

INPUT 1

Pin 10

Optical

Isolation Relay

Pin 1

Normally OPEN

OUTPUT 1

Pin 2

Normally CLOSED

INPUT 2

Pin 11

Pin 3

Normally OPEN

INPUT 3

Pin 12

OUTPUT 2

Pin 4

Normally CLOSED

Panel

Power

Control

Logic

INPUT 4

Pin 13

Pin 5

Normally OPEN

OUTPUT 3

Pin 6

Normally CLOSED

Single-Row 14-Pin

Connector

9

10

11

12

13

14

6

7

8

3

4

5

1

2 Whetting

Voltage

Pin 14

Motor Fuse

Pin 7

Normally OPEN

Pin 8

Pin 9

OUTPUT 4

Normally CLOSED

Common

V

Source

120 V from

Internal or External

Auto-Off-Manual

Switch in the

Auto/Remote Position

Figure 7-7. Discrete I/O connections.

98 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Alarms

An alarm is a binary (On/Off) flag that is activated when a user-defined condition is true. The status of an alarm can be viewed on the display or through communications, including the ProView NXG software. Alarms can only be configured via communications.

The user can define the priority of an alarm to cause the

Alarm LED, Warning LED, or no LED to be illuminated.

The assigned priority of the alarm also determines the order in which the alarms are viewed via the display.

•

Assigning a Priority of 0–50 will cause the Alarm LED to be illuminated when the alarm condition is active.

Assigning a Priority of 51–100 will cause the Warning LED to be illuminated when the alarm condition is active.

Assigning a Priority of 101–127 will not cause an LED to be illuminated, but the condition can be viewed on the display or through communications when the alarm condition is active.

A timer can also be set for each alarm. This will allow the alarm to become active only after the timer (in seconds) has expired.

When an alarm becomes active, it is given the state of

Unacknowledged. If the alarm is configured to illuminate an

LED, the LED will flash as long as the alarm is

Unacknowledged. To acknowledge an alarm, the user enters

Alarms > Alarms Active Unacknowledged via the menu, displays the alarm, and presses the Enter key twice. If the alarm is configured to illuminate an LED and has been acknowledged, the light will be on continuously. The alarm will turn off whenever the alarm configuration is no longer true.

The control can also record an event or take a profile snapshot whenever an alarm becomes active or inactive.

The control contains two types of user-configurable alarms:

Status Alarms and Data Alarms.

The Status Alarm type is activated based upon the condition of a binary (On/Off) parameter. By default, Status Alarms become active when the parameter is On. The alarm, however, can be inverted so that it becomes active when the parameter is Off. The following is a list of some of the available parameters for the Status Alarms:

Supervisory Active

Reverse Power Flow

No Input Voltage Detected

No Output Voltage Detected

Tap at Neutral

Voltage Limit On

Reg Blocked Annunciator

Voltage Reduc On Annunciator

Power Up Self Test Error

LF Ldr Unable to Operate

Motor Trouble

Alternate Configuration Active

EXAMPLE:

Configuring a Supervisory Active Alarm to be inverted with a

Priority of 25 will cause the Alarm LED to flash whenever the Supervisory Switch is in the Off position.

The Data Alarm type is activated based upon the condition of an analog (numeric) parameter being above or below a

Threshold value. The operations counters and metering values are available as Data Alarms. The following is a list of some of the available Data Alarms:

Secondary Load Voltage High

Secondary Load Voltage Low

Secondary Source Voltage High

Secondary Source Voltage Low

Compensated Voltage High

Compensated Voltage Low

Primary Load Voltage High

Primary Load Voltage Low

Primary Source Voltage High

Primary Source Voltage Low

Buck / Boost Voltage High

Buck / Boost Voltage Low

Load Current High

Load Current Low

Power Factor Low

Tap Position High

Tap Position Low

Total Operations Counter High

Last 24 Hours Operations Count High

EXAMPLE: Configuring a Compensated Voltage Low Alarm with a Threshold of 115 V with a Priority of 75 will cause the

Warning LED to flash whenever the compensated voltage is below 115 V.

Events

An Event is a time-stamped record of an Alarm condition.

The last fifty Events can be viewed via the display using the nested menu item _Events under *Alarms/Events. The last

300+ Events can be viewed via communications. Events are stored in non-volatile memory.

Profiling

The Data Profiler records the current state of parameters chosen by the user at regular intervals into non-volatile memory. The Data Profiler data can only be viewed and configured via communications. The user can choose to profile as many of the instantaneous and demand (present) parameters as desired. The user can set the sampling interval from 1 minute to 1 day. The greater the number of parameters chosen and the faster the sampling interval, the less overall time will pass before the record begins to be overwritten.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 99

EXAMPLE:

Choosing 10 parameters sampling every 10 minutes will provide over 4,460 samples or over 30 days before data begins to be overwritten. While choosing 40 parameters sampling every 5 minutes, the Data Profiler will only provide over 1550 samples or over 5 days before data begins to be overwritten.

Another consideration when configuring the profiler is that sampling unneeded parameters or unnecessarily often may lessen the life of the non-volatile memory in the control. The non-volatile memory life when sampling 10 parameters every 10 minutes, under normal conditions, the would be more than100 years.

•

Histograms

Histograms offer the user a quick visual method to understand the operation of the voltage regulator. The histogram data and configuration can only be accessed via communications. The histogram data is intended to be viewed in bar graph form. Data is available for Percent

Regulation and the following Forward and Reverse demand parameters:

•

Primary Load Current

Secondary Load Voltage

Secondary Source Voltage

Secondary Compensated Voltage

Load kVA

Load kW

Load kvar

The histogram is also configured via communications. The user sets a low and high limit for each parameter, creating a range of acceptable values. The control divides this range into 10 equal bins plus one Over and one Under bin for a total of twelve bins; see Figure 7-8.

EXAMPLE:

The user chooses a low limit of 118 V and a high limit of 122

V for the Compensated Voltage parameter. The control creates bins as shown in Figure 7-8.

The control then samples each of these parameters once per minute and increments the appropriate bin. The maximum and minimum value of the sampled parameter is also stored with the histogram data (note that these values may not be the same as the high and low value in the demand metering section due to the sampling used).

Figure 7-9. Sample histogram.

After a period of time has passed, the histogram for this example displays, using ProView NXG software to view, as shown in Figure 7-9. The sample Histogram suggests that the compensated voltage is varying greatly. The source of this variation should be investigated. Possible causes include an unstable system supply voltage, improper control settings, or a greatly varying load.

TIME-ON-TAP feature

The TIME-ON-TAP™ feature logs the amount of time spent on each tap-changer position. The TIME-ON-TAP data is accessed via the ProView NXG software and is viewed in bar graph format; see Figure 7-10.

Figure 7-10. Sample TIME-ON-TAP bar graph.

Under

118.0

118.0 to 118.4 to 118.8 to 119.2 to 119.6 to 120.0 to 120.4 to 120.8 to 121.2 to 121.6 to Over

118.4

118.8

119.2

119.6

120.0

Figure 7-8. Histogram sampling-bins example.

120.4

121.8

121.2

121.6

122.2

122.0

100 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Preventive maintenance tapping

Preventive Maintenance Tapping (PMT™) will automatically operate the tap-changer based upon user-configured parameters. Under certain operating conditions and load tap-changer contacts can become susceptible to coking. The

PMT feature will operate the tap-changer to wipe the contact blades and prevent build-up of carbon. There are two different types of preventive maintenance tapping available: PMT Mode A and PMT Mode B.

PMT Mode A

When enabled the control monitors tap position and, if it stays on any single tap position for a user-defined period of time (Time Delay, FC 302), the control will automatically raise the tap-changer one position, lower the tap-changer two positions, and then raise the tap-changer one position.

When PMT Mode A is performed on a Quik-Drive™ tapchanger, this entire operation will take approximately one second. The user can monitor how much time is left prior to the maintenance tapping being performed at Countdown

Delay, FC 301. To sample how the PMT Mode A functions, the user can use Issue Test, FC 303.

PMT Mode B

When enabled, the control monitors tap position and, if it does not pass through neutral for a user-defined period of time (Time Delay, FC 322), the control will automatically tap through and past neutral one position. This operates and wipes the blades of the reversing switch. It then returns the tap-changer to the original tap position. Due to the possible large fluctuation in voltage while maintenance is being performed, there are more configuration points in PMT

Mode B than in Mode A. The user can determine the time of day that PMT Mode B is allowed, so that maintenance can be performed at night. To limit the amount of allowable voltage-swing when performing maintenance, the user can input the maximum deviation. Also, the user can input a current limit so that maintenance is only performed under light load conditions. Additionally, a master slave mode is available so multiple units can act at once to keep the supply balanced for three-phase loads that are sensitive to imbalance. The user can monitor how much time is left prior to the maintenance tapping being performed at Countdown

Delay, FC 321. To sample how the PMT Mode B functions, the user can use Issue Test, FC 328.

Duty cycle monitor

The Duty Cycle Monitor calculates the amount of life used for each arcing surface contact on the voltage regulator

Quik-Drive tap-changer. The control uses the metering values, such as current, voltage, power factor, and tap position, and a detailed data on the internal design of the voltage regulator to calculate the interrupting current and recovery voltage. This is then related to the test data for the appropriate Quik-Drive tap-changer. The Duty Cycle Monitor functions only on voltage regulators with a Quik-Drive tapchanger.

FC 333 displays the worst-case value of life used, expressed as a percentage, to the third decimal point. This value may be used to generate two different Data Alarms. The first

DCM Data Alarm is intended to be configured to that maintenance may be scheduled. The suggested setting is

75%. The second Data Alarm is intended to be set at a higher level, suggested setting of 90%, to notify the user that a service outage due to contact failure may be imminent. For more information on Alarms, see Alarms in this section of the manual.

A detailed percentage of life-used for each arcing contact is available ProView NXG software. When replacing a control on an existing voltage regulator, ProView NXG software must be used to enable and configure the Duty Cycle

Monitor feature. Configuration values programmed in the software for the specific voltage regulator include the design number and an estimation of the amount of life already used.

Note: Duty Cycle Monitor is active only on regulators from

Eaton with Quik-Drive tap-changes.

Leader/follower scheme

The Leader/Follower scheme is an electronic scheme designed to keep two or three individual single-phase step voltage regulators on the same mechanical tap position. This is primarily used by utilities and others needing three-phase voltage regulation at the expense of a balanced load voltage center with unbalanced loading. A fiber optic intelligent loop scheme is used between controls providing the communications necessary between phases to initialize a tap change and provide positive feedback in maintaining those equal tap positions. As a result of the communications between all phases, access to certain data from all phases is available at the display of all controls involved as well as with ProView NXG software.

This scheme can also be used for paralleling substation voltage regulators with a set of power transformers used for increasing capacity and providing a backup for maintaining regulated power. For more details, see Service Information

MN225023EN Leader/Follower scheme Installation and

Operation Guide.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 101

Section 8: Troubleshooting

WARNING

Hazardous voltage. When troubleshooting energized equipment, protective gear must be worn to avoid personal contact with energized parts. Failure to comply can cause serious injury or death.

When using the CL-6 control with an Eaton regulator, refer to Service Information MN225008EN VR-32 Voltage

Regulator with Quik-Drive Tap-Changer Installation,

Operation, and Maintenance Instructions for additional information on the regulator operation and maintenance.

External check

Examine the power connections first. For example, verify that the load lead is connected to the source bushing and that the source-load lead is connected to the source-load bushing. Check for other potential problems, such as an open ground connection.

If the fuse has blown, the tap-changer motor will not run. If the 6 A fuse is okay, set the front panel POWER switch to

Internal Power and check the following :

1. With a voltmeter, check TB present at TB

-V

, then the problem is in the control.

Replace the control.

-V

to G. The voltage should approximate the set voltage. If the voltage is

2. Check the voltage-disconnect knife switch V and V

6 switch if closed.

, V

(if present), and the current shorting knife switch C of the back panel in the control enclosure. Close the V

voltage switches if open. Open the CT shorting

3. Check the voltage at V at V

to G. If the voltage is present

to G, then the problem could be in the wiring harness or ratio-correcting transformer. Check for loose connections or burnt wiring. Verify that the ratiocorrecting transformer RCT the regulated voltage as shown on the nameplate on the control enclosure door.

is on the correct tap for

4. If voltage is not present, then the problem is either in the control cable, junction box connection, or inside of the regulator.

Defining the problem

Determine which of the following categories best describes the malfunction and follow the corresponding steps. Refer to the Appendix, Figures 10-1 through 10-4, while diagnosing the problem.

Note: Parameter options, accessed via menu or function code, are shown in bold.

Settings of front panel switches are shown in bold.

Keypad directions are shown as follows: press keys as shown in bold; enter numbers as shown in

italics.

Control panel troubleshooting

No power

Check the 6 A motor fuse on the control front panel.

Remove the fuse from the control and check for continuity across the fuse. Spare fuses are shipped with each control and are located in the control box.

Note: Use only 125 V, 6 amp, fast-blow fuses of the proper current rating. Failure to do so may cause unnecessary fuse operation or insufficient protection of the regulator and control.

Self-diagnostics

The control hardware performs self-diagnostic physical and memory checks. There are two events which force the control into the self-diagnostic routines: (1) Power is turned on; (2) Operator entry of the self-test mode (FC 91).

The duration of this test sequence is approximately three seconds. At completion, the display will indicate PASS or display an error message if a problem is found. (See

Diagnostic Error Messages in the next section of this manual). The PASS message will remain in the display until the operator makes an entry through the keypad or, after 20 minutes, the display will automatically be turned off.

The clock will maintain time-keeping for at least 24 hours after loss of ac power to control. The backup power source requires

65 hours operation on ac power to become fully charged.

Note: After the self-diagnostic and the LCD displays

PASS, press Escape for further keypad use.

Note: The word ERROR on the LCD indicates a key entry error, not a diagnostic failure. See Indication

Messages in the Control Programming section of this manual.

Diagnostic error messages

If the control indicates a failure on power up, the LCD displays an error message. This message will give information about the problem detected. Also, as long as there is a diagnostic error message, the Diagnostic

Error LED indicator will be lit. Messages may include No

Neutral Sync Signal, Input Voltage Missing, and

Configuration Value Required. For more information, refer to Power-Up/Reset Conditions in the Control

Programming section of this manual.

102 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

No neutral sync signal

CONTROL NOT INSTALLED ON REGULATOR

This most often occurs when powering up a control on a workbench. The No Neutral Sync Signal means the control did not have a neutral signal during the self-test during power up. This can occur because there is no 120 V signal present on the neutral light input. To confirm this and clear the error message, perform the following:

1. Escape.

2. Function, 99, Enter, 32123 (default), Enter.

3. Function, 12, Enter.

4. Edit/Reset, ( some number from one to 16), Enter.

5. Initiate a self-test.

Function, 91, Enter, Enter, Enter.

The (No Neutral Sync Signal) message should not reappear.

CONTROL ON REGULATOR

If the control is on a regulator and the (No Neutral Sync

Signal) message appears during power up or self test, or there is no neutral light, check the input signal at TB input. When there is not 120 V at TB

-NL while on neutral, the neutral light on the control panel will be off.

-NL to

G. If the regulator is in neutral, there should be 120 V at the

If there is no neutral light and no neutral light signal at

-NL, verify that the regulator is in neutral. For the regulator to be in neutral, the position indicator should be on neutral and if the regulator is energized there should not be a differential voltage between the source (S) bushing and the load (L) bushing.

When there is no neutral light and the regulator is powered up either by internal or external power, check these input points as follows:

•

-NL, located on the bottom terminal board on the control assembly back panel:

If there in no voltage and there is voltage at TB

-NL, the problem is in the connections in the wiring harness on the back panel. If there is voltage on TB

-NL and no neutral light, the problem is in the control panel.

•

-NL, located on the top terminal board on the control assembly back panel:

If there is no voltage, the problem can be in the connection at this terminal point, the control cable, the connection in the junction box, or inside the regulator.

JBB-NL, located on the terminal board inside the junction box and TCB-NL, located on the tap changer:

If there is no voltage, the problem is inside the regulator, either with connection point JBB-NL under the cover assembly, connection TCB-NL on the tap-changer, neutral light switch, or the neutral light actuator segments.

No input voltage

The (No Input Voltage) message occurs when no input voltage is sensed or it cannot be calculated. The input voltage is the source voltage from a differential or source potential transformer or a calculated value. The voltage calculation is enabled when FC 39, Source Voltage

Calculation, is set to On, the regulator type is properly set at FC 140, and the tap position is know.

When this message is indicated and the regulator has a differential transformer, check for a voltage at V

to G, if

is present. This voltage will be 0.0 V when the regulator is in neutral. The voltage will increase as the regulator is tapped up. When the regulator is at 16 raise, the voltage will be 11.5 to 12 Vac. If there is no input voltage shown at FC 7, Source Voltage Secondary, and the regulator has a differential transformer, the problem could be in the control, back panel connections, control cable, the junction box, the junction box terminal board under the cover, or the differential transformer.

If there is not a differential transformer on the regulator, turn FC 39 to On to verify this indicator. This will supply the calculated voltage signal, causing the input voltage diagnostic error message to turn off.

Indication messages when using edit key

The following indication messages can occur when using the Edit key:

•

(Improper Security) message will display while attempting an edit function when changes are disabled by the security system. To enable, enter a higher security code at FC 99, Security Code:

Function, 99, Enter, Security Code, Enter.

Proceed with function code value and setting changes.

•

(Value Too Low) means the function value entered is below the acceptable limit.

(Value Too High) means the function value entered is above the acceptable limit.

For more information, refer to Indication Messages in the Control Programming section of this manual.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 103

Tap-changer operation troubleshooting

The regulator will not operate manually or automatically

1. Connect a voltmeter between TB

-R

and TB

-G. Set the CONTROL FUNCTION switch on Manual.

2. Toggle the Raise switch and measure the voltage between terminals R

and G on terminal board TB

The voltage reading should approximate the set voltage setting.

3. Place the voltmeter hot lead on TB

1 the Lower switch.

-L

, then toggle

4. Measure the voltage between terminals L

1 terminal board TB

1 mate the set voltage value.

and G on

. The voltage reading should approxi-

5. If correct voltage readings are obtained in Steps 2 and 4, the trouble may be in the position indicator, junction box, control cable, or motor capacitor. Refer to the junction box troubleshooting section of Service Information

MN225008EN VR-32 Voltage Regulator with Quik-Drive

Tap-Changer Installation, Operation, and Maintenance

Instructions.

6. If there is no voltage measurement in either Step 2 or

4, make a corresponding measurement (R

to G) on lower terminal board TB

to G and

7. If the voltages measured in Step 6 are approximately the set voltage value, then the fault is likely a loose connection or a faulty terminal between TB

and TB

8. If Steps 2, 4, and 6 do not provide voltage readings, measure the voltage between VM and G on terminal board TB

. The reading should approximate the set voltage value.

9. If Step 8 does not yield a voltage measurement, check the voltage between PD

-1 (V1) and ground (G) at the voltage disconnect knife switch.

10. If Step 8 does not yield a voltage measurement, check the voltage between PD

-1 (V1) and ground (G) at the voltage disconnect knife switch.

A. If the set voltage value is approximately obtained, the V

disconnect or the ratio-correcting transformer

(RCT

) of the rear panel signal circuit is probably faulty.

B. If voltage is not obtained, the trouble is in the control cable, junction box, or regulator tank. Refer to the junction box troubleshooting section of Service

Information MN225008EN VR-32 Voltage Regulator with Quik-Drive Tap-Changer Installation, Operation,

and Maintenance Instructions. If the junction box checks are satisfactory, the trouble is in the regulator tank. See Service Information S225-12-1 QD3 Quik-

Drive Voltage Regulator Tap-Changer Manual and

Service Information S225-10-19 Voltage Regulator

Quik-Drive T875 Tap-Changer Switch; Operating,

Maintenance, Troubleshooting and Parts Replacement

Instructions for troubleshooting methods.

Motor capacitor problem

A problem in the motor capacitor can prevent a regulator from operating manually or automatically. To check the motor capacitor, use the following steps:

1. Connect a voltmeter from TB

-R

to G.

2. With the control powered up, place the Auto/

Remote/Manual switch on Manual.

3. Using the Raise/Lower Switch, give a Raise signal.

4. The voltmeter reading should approximate the set voltage.

5. With the voltmeter still connected to TB

1 a lower signal.

-R

to G, give

6. The voltmeter should read a capacitive voltage. This voltage could be somewhere between 60 and 90 Vac.

7. A voltage reading on TB

-R

to G of 0 V or a mV reading is a sign of a bad capacitor.

8. To double check, place the voltmeter lead on TB

-L

to G.

9. Use the Raise/Lower switch, and give a Lower signal.

10. The voltmeter reading should approximate the set voltage.

11. With the voltmeter still connected to TB

1 a Raise signal.

-L

to G, give

12. The voltmeter should read a capacitive voltage. This voltage could be somewhere between 60 and 90 Vac.

13. A voltage reading on TB

-L

to G of 0 V, or a mV reading, is a sign of a bad capacitor.

14. If both the raise and lower circuit reads 0 V, or a mV reading, when there should be a capacitive voltage, then the motor capacitor is open. The capacitor will need to be replaced.

Operation counter does not indicate tap change

If the operation counter does not indicate tap changes, check the following:

1. The voltage signal at TB

-R

and L

should be approximately 120 Vac when a tap change is made. When this voltage signal is applied, the control panel operation counter will be updated.

2. Measure the voltage at TB

-R

or L

when the tapchanger is given a command to tap, in manual mode, by the Raise/Lower toggle switch. If the voltage signal is present, the problem is either in the control connector or the control.

3. If the voltage signal is not present at TB

-R

or L

, the problem could be in the back panel wiring harness connections at TB changer.

-R

or L

, the control cable, junction box connections, or the holding switch on the tap

4. Check the voltage signal at TB

-R

or L

. If the signal is not present at these points; keep tracing the signal back through the components back into the regulator.

104 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Tap position out-of-sync

If the control loses sync with the position indicators (check

FC 12, Present Tap Position), then check FC 49, Tap-Changer

Type against the nameplate on the regulator. The nameplate indicates what type of tap-changer is on the regulator. FC 49 must be set for the type of tap-changer (Spring Drive, Direct

Drive, QD8, QD5, QD3).

If the control is on a competitors regulator, FC 49 should be set for the manufacturers name.

Regulator will not tap beyond a certain tap position

If the regulator will not tap beyond a certain tap position, check the limit switch settings on the position indicator. If the limits need to be adjusted, adjust upper and lower limits to allow proper regulation.

The regulator operates manually but operates incorrectly when set on automatic

Run the regulator to the neutral position with the control switch. Check for voltage between V

and G on TB

. This is the sensing circuit supplying voltage from the output of

RCT

on the rear panel. If this voltage is more than 10% above or below the programmed voltage level setting of the control, then the source is beyond the range of the regulator. An absence of voltage would indicate a wiring problem such as an open somewhere in the control power supply. If these checks are correct, perform the following:

1. If the control will not operate automatically, verify that the band edge indicators are functioning. (These are the

Out-of-Band High and Out-of-Band Low indicators located on the front panel.) If they are not functioning, check FC 56, Reverse Sensing Mode. Set it to Locked

Forward if it is not there already. Retry the automatic mode of operation.

2. Verify that FC 69, Auto Blocking is set to Normal.

Retry the automatic mode of operation.

3. Measure the voltage from V

S board TB

to G on lower terminal

A. A measurement of approximately the set voltage value at V control.

to G indicates that the problem is in the

B. If there is no voltage present at V

S is in the V

to G, the trouble

disconnect or the ratio-correcting transformer of the back-panel circuit. Replace them.

4. Check the hold switch circuit.

A. Verify that the tap changer will complete a tap change by placing the CONTROL FUNCTION switch to Manual and toggling the Raise/Lower switch in the desired direction.

B. If the Raise/Lower switch must be held in the

Raise or Lower position to complete a tap change, the problem is in the hold switch circuit. If the holding switch is not working, a Quik-Drive tap changer will do multiple taps until the tap change timeout occurs.

C. Check for voltage between TB

-HS and G and

-HS and G. If voltage is present at TB

-HS and not on TB

-HS, the problem is in the back panel wiring harness. Replace the orange HS lead from TB

-HS to TB

2 at TB

-HS. If no voltage is present

-HS, the problem is in the control cable, junction box cover, or the hold switch (located inside the regulator) itself. Check cable continuity up to the junction box. If it appears normal, the problem is the hold switch. Adjust or replace it

(see Service Information S225-12-1 QD3 Quik-Drive

Voltage Regulator Tap-Changer Manual and Service

Information S225-10-19 Voltage Regulator Quik-Drive

T875 Tap-Changer Switch; Operating, Maintenance,

Troubleshooting, and Parts Replacement Instructions.

If all appears to be in order, the problem is most likely in the control, not in the holding switch.

Check FC 56, Reverse Sensing Mode

When there is no load current and the regulator will not operate in automatic, check the C switch on the back panel. If the C switch is closed and FC 56 is set for

Bi-directional, the regulator will not operate in automatic.

The C switch should be open for normal operation.

Check FC 69, Auto Operation Blocking Status

1. Check the Auto/Remote/Manual switch. The switch should be on Auto/Remote.

2. Verify that FC 69 is set to Normal. To check the FC 69 setting:

Function, 69, Enter.

3. If not on Normal and resetting is blocked by the security feature, enter the security code via the keypad to change the blocking status:

Check FC 170, Tap-to-Neutral

1. Verify that FC 170 is set to Off. To check the FC 170 setting:

Function, 170, Enter.

2. If not on Normal and resetting is blocked by the security feature, enter the security code via the keypad to change the blocking status:

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 105

Testing with the voltage limiter ON and a limit value set

CAUTION

Equipment Damage. Be mindful of polarity when using an external source. Polarity reversal will result in control damage.

When testing a regulator with external power, it is recommended that FC 80, Voltage Limiter Mode be set to Off.

When testing in the auto mode with the voltage limiter on, there may be problems getting the regulator to operate in either raise or lower direction if the external voltage is greater than the voltage limit settings.

No band indicators

If the band indicators are not working when the voltage is out-of-band, check the following:

1. Check FC 56, Reverse Sensing Mode. If FC 56 is set to

Lock Forward and there is reverse power, the indicator will not display and the voltage will not regulate.

2. Check FC 57, Reverse Current Sense Threshold and

*Load Current (*Metering PLUS). If the load current is less then the reverse threshold current, the indicators will not work and the regulator will not regulate.

3. If the regulator has been serviced and the current transformer circuit was involved, check the polarity of the current transformer. If the polarity is reversed, the band indicators will not display.

Metering troubleshooting

Load voltage secondary (output voltage), does not match the voltmeter test terminal voltage

When the output voltage at FC 6 is several volts different from the voltage at the voltmeter test terminals, verify that the following function code settings are per the nameplate:

1. Verify FC 43, System Line Voltage (Load Voltage) is set per the nameplate value.

2. Verify FC 44, Overall PT Ratio is set per the nameplate.

3. Verify RCT Control Tap located on the back panel of the control assembly is set per the nameplate.

4. Verify Control Winding E Tap and Differential

Transformer P Taps, if present, are set per the nameplate. E taps are located on the terminal board on the tap-changer inside the tank. P taps may be located on the terminal board on the top of the tap-changer or on the differential potential transformer located on the side channel inside the regulator tank.

When all the settings are set per the nameplate, the regulator is in neutral, and the system line voltage or load voltage matches what is stated on the nameplate, the voltmeter test terminals on the control panel will read the value on the nameplate.

No load current

When there is no load current reading at FC 9, Load Current,

Primary, or any of the metering components requiring current as part of the calculation, check the C switch on the back panel. The switch should be open. If the C is closed, the current transformer is shorted and no current reading is available.

Regulator will not tap beyond a certain tap position

If the regulator will not tap beyond a certain tap position and the position indicator limit switches setting are at 16 raise and 16 lower, check the Soft ADD-AMP settings: FC 175,

Soft ADD-AMP High Limit, and FC 176, Soft ADD-AMP Low

Limit.

Control calibration

WARNING

Explosion Hazard. Verify that both the neutral light and the position indicator hand indicate neutral when the tap-changer is physically in the neutral position. Lack of synchronization will cause an indefinite indication of NEUTRAL. Without both indications of neutral, bypassing of the regulator at a later time will not be possible, and the line must be de-energized to avoid shorting part of the series winding. Failure to comply can result in serious personal injury or death and equipment damage.

CAUTION

Equipment Damage. Be mindful of polarity when using an external source. Polarity reversal will result in control damage.

All controls are factory-calibrated and should not need to be recalibrated by user. However, calibration can be performed for both the voltage and current circuits as follows:

106 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Voltage calibration

1. Connect an accurate true-RMS-responding voltmeter to the voltmeter terminal. This voltmeter should have a base accuracy of at least 0.1% with calibration traceable to the National Bureau of Standards.

2. Connect a stable 50/60 Hz voltage source (with less than 5% harmonic content) to the External Source terminals.

3. Set the POWER switch to External.

4. Adjust the voltage source to provide 120.0 Vac to the control, as read on the reference voltmeter.

5. Before calibration can be performed, Security Level 3 must be activated by entering the proper security code at FC 99, Security Code.

Function, 99, Enter; 32123 (default), Enter.

6. Access FC 47, Voltage Calibration.

Function, 47, Enter.

7. The display will show the voltage applied to the control.

This should correspond to the reading on the reference voltmeter. If the control reading is significantly different, the calibration can be altered by pressing Edit, keying in the correct voltage as displayed on the reference meter, and pressing Enter. The voltage circuit is now calibrated.

Current calibration

1. Connect an accurate true-RMS-responding ammeter in series with the current source.

2. Connect a stable 60/50 Hz current source (with less than 5% harmonic content) to the reference ammeter and to the current input terminals C1 and C3 on fanning tified as the green wire).

3. To power the control, connect a 120 Vac voltage source to the EXTERNAL SOURCE terminals.

4. Place the power switch on External.

5. Adjust the current source to provide 0.200 A to the control, as read on the reference ammeter.

6. Before calibration can be performed, Security Level 3 must be activated by entering the proper security code at FC 99, Security Code.

Function, 99, Enter, 32123 (default), Enter

The proper level is now activated.

7. Access FC 48, Current Calibration.

Function, 48, Enter.

8. The display will show the current applied to the control.

This should correspond to the reading on the reference ammeter. If the control reading is significantly different (greater than 0.6 mA error), the calibration can be altered by pressing Edit, then entering the correct current as displayed on the reference meter, followed by Enter. The current circuit is now calibrated.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 107

Section 9: Control accessories

The CL-6 voltage regulator control has several accessory features available. Accessories available include communications software and hardware, a heater assembly, and a PC-to-dataport cable.

Communications

Software

ProView NXG software

Eaton's Cooper Power series ProView NXG software was developed as an advanced package to configure, program, and acquire data from CL-6 series voltage regulator controls.

ProView NXG allows the user to:

•

Create control settings

Upload control settings

Download control settings

Provide output of settings and readings

•

Manage settings and readings effectively

ProView NXG software is fully compatible with the

Microsoft® Windows® 95 or later operating system, with

Microsoft® Windows NT® Workstation Version 4.0 or later operating system, and the Microsoft® Windows® XP operating system. Both readings and settings are stored as convenient Microsoft® Excel (.XLS) format files to allow use of the data by other applications without awkward conversions.

ProView NXG software is a user-friendly, graphically oriented program that is easy to use and understand. On-line help and a complete user manual help make the program one of the most comprehensive in the industry. The software is designed for configuration of the regulator control using

Data 2179 and DNP3 protocols.

Figure 9-1. Fiber-optic with RS-232 Interface Board.

Hardware

Fiber-optic with RS-232 interface board

In this configuration, a pair of standard ST type fiber-optic connectors and an RS-232 port are mounted on the interface board to provide the customer connection to digital

SCADA via multi-mode fiber-optic cables or a standard

9-pin DB-9 RS-232 cable. Communication settings are easily changed with the use of DIP switches or through the

ProView NXG software package. The fiber-optic connections are used for fiber looping (fiber loop or fiber star) with other controllers. The RS-232 interface provides for primary external communication with the control. In the event where multiple controls are being interconnected, only one device requires connection to the RS-232 port, while the remaining devices communicate through the fiberoptic connections. See Figure 9-1 for sample connection diagrams.

Ethernet interface board

In this configuration, an RJ-45 and ST fiber connectors are mounted to the interface board. These provide the customer with digital SCADA via standard cat 5 cable or multimode fiber.

RS-485 Interface Board

In this configuration, RS-485 twisted pair terminals are mounted on the interface board to provide the customer connection to digital SCADA via a twisted pair RS-485 connection.

Heater assembly

A thermostatically controlled heater assembly is available for use in high-humidity areas. The thermostat in the heater assembly will turn the heater on when the temperature falls below 85 °F (29 °C) and off when the temperature exceeds

100 °F (38 °C). For full details refer to Service Information

S225-10-12 VR-32 Regulator Control Heater Part No. 9000:

Installation and Parts Replacement Instructions.

108 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

Section 10: Appendix

Ratio-Adjusting Data

Internal PT

Tap* Ratio

20:1

40:1

20:1

60:1

40:1

20:1

115:1

57.5:1

120:1

60:1

166:1

120:1

60:1

287.5:1

165.5:1

TABLE 10-1

VR-32 Tap Connections and Voltage Levels (60 Hz)

Regulator

Voltage

Rating

2500

5000

7620

13800

14400

19920

34500

13800

13200

12000

7970

7620

7200

6930

19920

13200

12470

12000

7970

7620

7200

6930

14400

17200

16000

15242

14400

7960

7620

7200

34500

19920

7970

7620

7200

6930

4800

4160

2400

13800

Nominal

Single

Phase

Voltage

2500

2400

5000

4800

4160

2400

8000

120

115.5

120

120.5

120

125

120

120.5

120

119.5

120.5

120

120.5

120

120.5

Test

Terminal

Voltage

125

120

125

120

120.5

115:1

110:1

104:1

66.5:1

63.5:1

60:1

57.5:1

166:1

110.2:1

99.7:1

63.7:1

57.5:1

120:1

143.9:1

133:1

127:1

120:1

66.5:1

63.5:1

60:1

287.5:1

165.5:1

66.5:1

63.5:1

60:1

57.5:1

40:1

34.7:1

20:1

115:1

Overall

Potential

Ratio

20:1

40:1

34.7:1

20:1

66.5:1

127

120

115

120

115

110

104

133

120

115

104

133

127

120

104

133

127

120

104

120

133

127

120

115

120

104

120

133

RCT

Tap

120

TABLE 10-2

Ratio-Adjusting Data

Internal

Tap*

Ratio

55:1

91.7:1

55:1

120:1

92.7:1

72.9:1

183.4:1

122.3:1

91.7:1

275:1

183.3:1

91.7:1

VR-32 Tap Connections and Voltage Levels (50 Hz)

Regulator

Voltage

Rating

6600

11000

15000

22000

33000

22000

20000

19100

15000

12700

11000

10000

34500

14400

13800

13200

12000

11000

10000

8600

23000

33000

30000

22000

20000

11600

11000

10000

11000

10000

6930

6600

6350

6000

5500

15000

Nominal

Single

Phase

Voltage

6930

6600

6350

6000

5500

11600

104

120

110

127

120

110

104

120

110

120

127

120

115

110

104

120

110

120

110

127

120

110

115

110

104

120

110

127

120

RCT

Tap

127

120

115

110

104

127

120

119

120.2

122.6

119.8

120

119

118.5

120

115.4

118.7

117.7

118

118.5

120

119

120

119

119.5

120

119

120

119

119.1

120

120.5

119

115.4

125

Test

Terminal

Voltage

119.1

120

120.5

119

115.4

119.5

183.4:1

168.1:1

158.9:1

122.3:1

106:1

91.7:1

84.1:1

291:1

120:1

115:1

110:1

104:1

91.8:1

84.1:1

72.9:1

194.1:1

275:1

252.1:1

183.3:1

168:1

97:1

91.7:1

84.1:1

91.7:1

84.1:1

58.2:1

55.1:1

52.7:1

50.4:1

47.7:1

120:1

Overall

Potential

Ratio

58.2:1

55:1

52.7:1

50.4:1

47.7:1

96:1

* P taps are used with E taps only on regulators where an internal potential transformer is used in conjunction with the control winding to provide voltage supplies to the control. See nameplate for verification of this type of control supply.

** Test terminal voltage and overall potential ratio may vary slightly from one regulator to another. See the regulator nameplate for determining the exact values.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 109

TABLE 10-3. ADD-AMP Capabilities of 60 Hz Ratings

Rated

Volts

2500

5000

7620*

13800

14400

19920

110

333

416

432

500

576

667

720

833

100

200

552

667

833

144

288

333

400

500

667

833

1000

207

276

414

500

416.3

500

667

833

138

57.2

76.2

114.3

167

250

333

100

125

167

250

333

416.3

38.1

167

250

333

416.3

Rated kVA

100

125

254

318

330

382

440

509

550

636

110

440

531

664

110

220

184

220

275

369

460

552

165

220

330

398

603

668

875

1093

110

165

241

361

482

231

289

300

347

400

463

400

483

604

100

200

500

578

50.2

100.4

167

200.8

250

335

418

502

150

200

300

362

548

656

875

1093

100

150

219

328

438

200

250

334

500

668

833

668

1000

1332

1665

100

†Load Current Ratings (A)

Regulation Range (Wye and Open Delta)

±10% ±8.75% ±7.5% ±6.25% ±5%

Regulation Range (Closed Delta)

±15% ±13.1% ±11.3% ±9.4% ±7.5%

200 220 240 270 320

300

400

500

330

440

550

360

480

600

405

540

668

480

640

668

1000

1332

1665

110

668

1000

1332

1665

120

668

1000

1332

1665

135

668

1000

1332

1665

160

220

275

367

550

668

833

240

300

401

600

668

833

270

338

451

668

833

320

400

534

668

833

277

347

360

416

480

556

600

668

120

480

580

120

240

200

240

300

402

502

602

180

240

360

434

658

668

875

1093

120

180

263

394

526

101

135

203

296

443

591

668

875

1093

135

203

270

405

489

540

652

668

135

270

312

390

405

468

540

625

668

135

225

270

338

452

564

668

120

160

240

350

525

668

875

1093

160

240

320

480

579

640

668

160

320

370

462

480

555

640

668

160

267

320

400

536

668

Rated

Volts

34500

Rated kVA

172.5

345

517

690

†Load Current Ratings (A)

Regulation Range (Wye and Open Delta)

±10% ±8.75% ±7.5% ±6.25% ±5%

Regulation Range (Closed Delta)

±15% ±13.1% ±11.3% ±9.4% ±7.5%

50 55 60 68 80

100

150

200

110

165

220

120

180

240

135

203

270

160

240

320

†55/65 °C rise rating on VR-32 regulators gives an additional 12% increase in capacity if the tap-changer’s maximum current rating has not been exceeded. For loading in excess of the above values, please refer to your Eaton representative.

* Regulators are capable of carrying current corresponding to rated kVA when operated at 7200 V.

TABLE 10-4. ADD-AMP Capabilities of 50 Hz

Ratings

Rated

Volts

6600

11000

15000

22000

33000

220

330

440

550

660

150

264

330

396

110

165

132

198

Rated kVA

220

330

440

660

880

165

330

495

333

660

225

300

450

600

750

110

100

150

200

300

† Load Current Ratings (A)

Regulation Range (Wye and Open Delta)

±10% ±8.75% ±7.5% ±6.25% ±5%

Regulation Range (Closed Delta)

±15% ±13.1% ±11.3% ±9.4% ±7.5%

50 55 60 68 80

400

500

600

100

150

200

300

400

500

600

100

150

200

300

400

500

100

150

200

300

400

100

150

231

200

110

165

220

330

440

550

660

110

165

220

330

440

550

660

110

165

220

330

440

550

110

165

220

330

440

110

165

254

220

120

180

240

360

480

600

668

120

180

240

360

480

600

668

120

180

240

360

480

600

120

180

240

360

480

120

180

277

240

135

203

270

405

540

668

135

203

270

405

540

668

135

203

270

405

540

668

135

203

270

405

540

135

203

312

270

160

240

320

480

640

668

160

240

160

240

320

480

640

160

240

370

320

240

320

480

640

668

320

480

640

668

160

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

ARD [JBB] X TERMINAL BO JUNCTION BO

2 C

1 C

) POS-7 (BLK

WHT) POS-8 (

)

ORG)

WHT)

GRN/BLK)

POS-2 (BLK

GROUND (

POS-9 (BL

POS-5 (

T BLU/BLK

POS-10 (

POS-3 (BLK/WHT

POS-4 (L

POS-6 (RED/BLK

)

U/BLK)

A (LT BL

A (OR

A (RED/BLK)

A (BLK/WHT)

A (RED)

A (WHT/BLK

A (BLK)

A (GRN)

GRN) CC (

)

WHT/BLK)

)

T BLU/BLK

ORG)

CC (BLK

CC (RED

CC (

CC (L

CC (

CC (RED/BLK

CC (BLK/WHT

) ORG/BLK

GRN/BLK)

RS-1 (

RLS-1 (BL

LLS-1 (

)

GRN/BLK)

ORG/BLK

CC (BL

CC (

RAISE LIMIT SWIT

Figure 10-1. Junction box wiring diagram.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 111

Position Indicator

Lower Limit

Switch (LLS)

1 2

JBB-L (GRN/BLK)

CC (GRN/BLK)

Raise Limit

Switch (RLS)

Position

Indicator

Reset

Solenoid

(RS)

JBB-R (BLU)

CC (BLU)

JBB-G (WHT)

JBB-DHR (ORG)

RS-1 (ORG/BLK)

CC (ORG/BLK)

CC (RED)

CC (BLK)

RLS-2 (BLU)

CC (WHT/BLK)

CC (BLU/BLK)

LLS-2 (GRN/BLK)

CC (BLK/WHT)

Junction Box

Terminal Board

(JBB)

DHR

(RED)

(GRN)

CT Protection

Circuit

Ground

Stud

CC (ORG)

CC (RED/BLK)

CC (GRN)

CC (WHT)

RS-2 (WHT)

12-Conductor

Cable (CC)

Ground

Stud

To Control

Figure 10-2. Legacy junction box wiring diagram.

112 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

This page is intentionally left blank.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 113

RLS

RSS

SCP

TCB

LSS

NLS

RCT

VTT

IRS

JBB

LLS

DPT

DHR

EST

GIB

HSL

SOURCE

BUSHING

TAPPED

WINDING

JBB-C2

JBB-C1

LOAD

BUSHING

CIRCUIT

PROTECTION

PIN D

TB1-C

PIN C

GIB

CT Shorting Switch

Control Cable

Current transformer (Toroidal Coil)

Differential Potential Transformer

Drag-Hand Reset

External Source Terminals

Ground Integrated into Terminal Board

Holding Switch Lower

Indicator Reset Solenoid

(Position Indicator)

Junction Box on the

Regulator Cover

Junction Box Terminal

Board on the Cover

Lower Limit Switch (Position Indicator)

Lower Logic Switch (Tap-Changer)

Lower Safety Switch

Motor Capacitor

Motor Fuse

Motor Resistor

Neutral Light

Neutral Light Switch

Power Switch

Ratio Correction Transformer

Raise Limit Switch (Position Indicator)

Raise Logic Switch (Tap-Changer)

Raise Safety Switch

Short Circuit Protection

Control Terminal Board

Tap-Changer Terminal Board

PT Voltage Interrupt Switch

DPT Voltage Interrupt Switch

Motor Voltage

Sensing Voltage

Voltage Test Terminals

INTERNAL

REMOVABLE

GROUND

BUSHING

NOTE: Portion of schematic shown in dotted

enclosures is located in regulator tank.

DPT

TAPS

LOCATED

ON TCB

UNDER OIL

E 3

E 2

JBB-S4

JBB-S2

JBB-G

(NOTE 4)

PIN A

TB1-V1

REMOVABLE

JUMPERS

FOR

ACCESSORIES

TB1-G

133

127

120

115

110

RCT1

104

COM

GIB

110

RCT2

104

COM

GIB

133

127

120

115

TB1-G

GIB

PIN G

TB1-V6

TB2-VS

TB1-VS

TB1-V5

TB1-V4

J4-4

INPUT

COUPLER

J4-3

EXTERNAL

SOURCE 4

INTERNAL

SOURCE

J4-12

TB2-VS

PANEL

POWER

INPUT

V-OUT

(LOAD)

INPUT

COUPLER

V-IN/DIFF

INPUT

COUPLER

SUPERVISORY

SWITCH

COUPLER

OFF

SUPERVISORY

CL6

CIRCUIT

BOARD

AUTO

ENABLE

COUPLER

TRIACS

LOWER SOURCE RAISE

AUTO

OFF

MANUAL

RAISE

OFF

LOWER

MOTOR

CURRENT

SENSE

COUPLER

NEUTRAL

LAMP

SENSE

COUPLER

6 AMP

OFF

3 12

J4-14

J4-10

J4-11

TB2-V7

TB2-VM

TB2-8

(NOTE 5)

SCP

BLK RED

GRN

EST

WHT

VTT

WHT

J4-1

J4-2

J4-17 J4-13 J4-5 J4-15 J4-8 J4-9 J4-6

OFF

DRAG

HAND

RESET

J4-16 J4-7

TB2-6

TB2-7

TB2-5

REMOVABLE

JUMPER FOR

TB2-G TB2-BR

TB8-3

TB8-1

TB2-V9

TB8-5

TB8-4

TB2-L3

TB1-L1

PIN L

2 CC

PIN N

TB2-R3

TB1-R1

TB2-HS

TB1-HS

TB2-DHR TB2-NL

TB1-DHR TB1-NL

LLS

JBB-L

RLS

JBB-R

JBB-S6

(NOTE 2)

JBB-S7

TCB-G

(NOTE 3)

LLS

T3 T2

RLS

NO C

C NO

HSL HSR

JBB-G (NOTE 4)

JBB-NL

JBB-HS

NO NC

NLS

JBB-DHR

IRS

Figure 10-3. Wiring diagram for Type B VR-32 Regulator and CL-6 control with differential potential transformer.

114 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

SOURCE

BUSHING

TAPPED

SERIES

WINDING

JBB-C2

JBB-C1

TB1-C

GIB

LOAD

BUSHING

PROTECTION

CIRCUIT

DPT

SHUNT

WINDING

INTERNAL

REMOVABLE

GROUND

TAPS

LOCATED

ON TCB

UNDER OIL

E 3

E 2

JBB-S4

JBB-S2

JBB-G

(NOTE 4)

PIN A

TB1-V1

SOURCE

BUSHING

REMOVABLE

JUMPERS

FOR

ACCESSORIES

TB1-G

133

127

120

115

110

RCT1

104

COM

GIB

110

RCT2

104

COM

GIB

133

127

120

115

TB1-G

GIB

PIN G

TB1-V6

J4-4

INPUT

COUPLER

J4-3

PANEL

POWER

INPUT

V-OUT

(LOAD)

INPUT

COUPLER

V-IN/DIFF

INPUT

COUPLER

SUPERVISORY

SWITCH

COUPLER

OFF

SUPERVISORY

CL6

CIRCUIT

BOARD

AUTO

ENABLE

COUPLER

TRIACS

LOWER SOURCE RAISE

AUTO

OFF

MANUAL

RAISE

OFF

LOWER

MOTOR

CURRENT

SENSE

COUPLER

NEUTRAL

LAMP

SENSE

COUPLER

6 AMP

EXTERNAL

SOURCE 4

INTERNAL

SOURCE

J4-12

TB2-VS

TB1-VS

TB1-V5

TB1-V4

OFF

3 12

J4-14

J4-10

J4-11

TB2-V7

TB2-VM

TB2-8

(NOTE 5)

REMOVABLE

JUMPER

FOR

ACCESSORIES

SCP

BLK RED

GRN

EST

WHT

VTT

WHT

J4-1

J4-2

J4-17 J4-13 J4-5 J4-15 J4-8 J4-9 J4-6

OFF

DRAG

HAND

RESET

J4-16 J4-7

TB2-6

TB2-7

TB2-5

REMOVABLE

JUMPER FOR

TB2-G TB2-BR

TB8-3

TB2-V9

TB8-1

TB8-5

TB8-4

TB2-L3

TB1-L1

PIN L

2 CC

PIN N

TB2-R3

TB1-R1

TB2-HS

TB1-HS

TB2-DHR TB2-NL

TB1-DHR TB1-NL

LLS 1

JBB-L

RLS

JBB-R

JBB-S6

(NOTE 2)

JBB-S7

TCB-G

(NOTE 3)

LLS

T3 T2

RLS

NO C

C NO

HSL HSR

JBB-G (NOTE 4)

JBB-NL

JBB-HS

NO NC

NLS

JBB-DHR

IRS

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 115

RLS

RSS

SCP

TCB

LSS

NLS

RCT

VTT

IRS

JBB

LLS

DPT

DHR

EST

GIB

HSL

CT Shorting Switch

Control Cable

Current transformer (Toroidal Coil)

Differential Potential Transformer

Drag-Hand Reset

External Source Terminals

Ground Integrated into Terminal Board

Holding Switch Lower

Indicator Reset Solenoid

(Position Indicator)

Junction Box on the

Regulator Cover

Junction Box Terminal

Board on the Cover

Lower Limit Switch (Position Indicator)

Lower Logic Switch (Tap-Changer)

Lower Safety Switch

Motor Capacitor

Motor Fuse

Motor Resistor

Neutral Light

Neutral Light Switch

Power Switch

Ratio Correction Transformer

Raise Limit Switch (Position Indicator)

Raise Logic Switch (Tap-Changer)

Raise Safety Switch

Short Circuit Protection

Control Terminal Board

Tap-Changer Terminal Board

PT Voltage Interrupt Switch

DPT Voltage Interrupt Switch

Motor Voltage

Sensing Voltage

Voltage Test Terminals

SOURCE

BUSHING

TAPPED

WINDING

JBB-C2

JBB-C1

PIN D

TB1-C

PIN C

GIB

LOAD

BUSHING

CIRCUIT

PROTECTION

INTERNAL

REMOVABLE

GROUND

SOURCE

BUSHING

TAPS LOCATED

ON TCB

UNDER OIL

E 3

E 2

REMOVABLE

JUMPER FOR

ACCESSORIES

JBB-G

(NOTE 4)

PIN B

JBB-S2

PIN A

TB3-V1

TB3-133

127

120

115

110

RCT1

104

COM

GIB

J4-4

INPUT

COUPLER

J4-3

PANEL

POWER

INPUT

V-OUT

(LOAD)

INPUT

COUPLER

V-IN/DIFF

INPUT

COUPLER

SUPERVISORY

SWITCH

COUPLER

OFF

SUPERVISORY

CL6

CIRCUIT

BOARD

AUTO

ENABLE

COUPLER

TRIACS

LOWER SOURCE RAISE

AUTO

OFF

MANUAL

RAISE

OFF

LOWER

MOTOR

CURRENT

SENSE

COUPLER

NEUTRAL

LAMP

SENSE

COUPLER

6 AMP

EXTERNAL

SOURCE 4

INTERNAL

SOURCE

J4-12

TB3-VS

OFF

3 12

J4-14

J4-10

J4-11

TB3-V7

TB3-VM

TB3-8

TB3-VS

SCP

BLK RED

GRN

EST

WHT

VTT

WHT

J4-1

J4-2

TB3-6

TB3-7

J4-17

TB3-VS

TB3-V4

REMOVABLE

JUMPER

J4-13 J4-5 J4-15 J4-8 J4-9 J4-6

OFF

DRAG

HAND

RESET

J4-16 J4-7

TB3-5 TB3-G TB3-BR TB3-V9 TB3-L3

TB3-L2

TB3-L1

TB3-R3

TB3-R2

TB3-R1

TB3-HS TB3-DHR

TB3-BR

PIN L

2 CC

PIN N

JBB-S6

(NOTE 2)

LLS

PIN I

JBB-L

(NOTE 3)

LLS

T3 T2

RLS

JBB-R

PIN F

PIN E

RLS

PIN J

JBB-HS

NO NC

NLS

JBB-DHR

PIN H

IRS

JBB-S7

TCB-G

NO C

HSL HSR

TB3-NL

JBB-G (NOTE 4)

JBB-NL

TB3-G

GIB

TB3-G

Figure 10-4. Wiring diagram for Type B VR-32 Regulator and CL-6 control with differential potential transformer and alternate back panel design.

116 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

SOURCE

BUSHING

TAPPED

JBB-C2

JBB-C1

PIN D

TB1-C

PIN C

GIB

LOAD

BUSHING

CIRCUIT

PROTECTION

INTERNAL

REMOVABLE

GROUND

TAPS LOCATED

ON TCB

UNDER OIL

BUSHING

REMOVABLE

JUMPER FOR

ACCESSORIES

E 3

E 2

CONTROL

WINDING

JBB-S2

JBB-G

(NOTE 4)

PIN B

PIN A

TB3-V1

TB3-133

127

RCT1

104

COM

GIB

120

115

110

J4-4

INPUT

COUPLER

J4-3

PANEL

POWER

INPUT

V-OUT

(LOAD)

INPUT

COUPLER

V-IN/DIFF

INPUT

COUPLER

SUPERVISORY

SWITCH

COUPLER

OFF

SUPERVISORY

CL6

CIRCUIT

BOARD

AUTO

ENABLE

COUPLER

TRIACS

LOWER SOURCE RAISE

AUTO

OFF

MANUAL

RAISE

OFF

LOWER

MOTOR

CURRENT

SENSE

COUPLER

NEUTRAL

LAMP

SENSE

COUPLER

6 AMP

EXTERNAL

SOURCE 4

INTERNAL

SOURCE

J4-12

TB3-VS

OFF

3 12

J4-14

J4-10

J4-11

TB3-V7

TB3-VM

TB3-8

TB3-VS

SCP

BLK RED

GRN

EST

WHT

VTT

WHT

J4-1

J4-2

TB3-6

TB3-7

J4-17

TB3-VS

TB3-V4

REMOVABLE

JUMPER

J4-13 J4-5 J4-15 J4-8 J4-9 J4-6

OFF

DRAG

HAND

RESET

J4-16 J4-7

TB3-5 TB3-G TB3-BR TB3-V9 TB3-L3

TB3-L2

TB3-L1

TB3-R3

TB3-R2

TB3-R1

TB3-HS TB3-DHR

TB3-BR

PIN L

2 CC

PIN N

PIN I

PIN F

LLS 1

JBB-L

RLS

JBB-R

JBB-S6

(NOTE 2)

JBB-S7

TCB-G

(NOTE 3)

LLS

LSS

NO C

HSL

C NO

RLS

RSS

HSR

PIN E

JBB-HS

NO NC

NLS

PIN J

JBB-DHR

PIN H

IRS

JBB-G (NOTE 4)

JBB-NL

TB3-NL

TB3-G

GIB

TB3-G

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 117

JBB-G – White

JBB-HS – Orange

RLS-1 – Blue

LLS-1 – Green/Black

JBB-NL – Red/Black

JBB-DHR – Orange/Black

JBB-S6 – Blue/Black

JBB-S7 – Black/ White

JBB-S4 – White /Black

JBB-S2 – Black

JBB-C1 – Red

JBB-C2 – Green

TB1-G – White

TB2-HS – Orange

TB2-R3 – Blue

TB8-1 – Blue

TB2-L3 – White /Green

TB8-3 – White /Green

TB2-NL – White /Red

TB2-DHR – White /Orange

TB2-VS – Black

RCT1-120 – Black

TB1-G – White

RCT2-G – White

SD1-2 – Violet

TB2-C3 – Green

RCT2 – White /Brown

RCT1 – Black

TB2-C1 – Red

PD2-2 – White /Brown

TB2-V7 – White /Brown

RCT1-G – White

TB1-G – White

PD1-2 – Black

TB1-V4 – Black

RCT2-G – White

TB8-4 – White

TB1-R1 – Blue

TB1-L1 – White /Green

TB2-G – White

RCT1-G – White

TB2-BR – White /Blue

TB2-G – White

RCT2-120 – White /Brown

TB8-5 – White /Blue

TB8-4 – White

TB2-J – White

TB1-VS – Black

SD1-3 – Red

TB1-C3 – Green

TB1-HS – Orange

TB1-R1 – Blue

TB1-L1 – White /Green

TB1-NL – White /Red

TB1-DHR – White /Orange

Note: TB only applies to non-reverse

RCT

-V

Motor Capacitor

JBB-S

-G TB

-5

RCT

-120 TB

-4

-J

-VS

J V

BR G

133

127

120

115

110

104

133

127

120

115

110

104

RCT

Cable Assembly,

Control Box

JBB-G

JBB-HS

RLS-1

LLS-1 JBB-DHR

JBB-NL

G G HS R

G G R

JBB-C

JBB-S

4 JBB-S

1 2

(C)

3 4

JBB-C

-C

RCT

-120 RCT

-G

-G SD

-2 TB

-C

RCT

-C

to TB

-V s

jumper power flow back panel assemblies supplied without

-V

is connected to RCT

120 on back panel assemblies set up for reverse power flow supplied with RCT

-2

-V

RCT

-G

-2

-V

RCT

-G

-4

1 2 3 4 5 6 7 TB

-3

-C

-HS

-L

-R

-NL

-DHR

G V

HS R

NL DHR TB

Figure 10-5. Back panel signal circuit.

118 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

JBB-G – White

JBB-HS – Orange

RLS-1 – Blue

LLS-1 – Green/Black

JBB-NL – Red/Black

JBB-DHR – Orange/Black

JBB-S6 – Blue/Black

JBB-S7 – Black/ White

JBB-S2 – Black

JBB-C1 – Red

JBB-C2 – Green

V1-120 10

V4-120

G-G

BR-BR

R3-R2

L3-L2

VS-VS

C-C2

C3-C3

C1-C

VS-V7

Black

White

White/Blue

Blue

White/Green

Black

Violet

Green

Red

White/Brown

Motor Capacitor

JBB-S

Cable Assembly,

Control Box

RCT1

1 2 3 11 4 5

6 7

RLS-1 LLS-1 JBB-C1 JBB-C2

12 13 14 15 11 16 17 18

JBB-S2

G BR R1 R2 L1 L2 V4 VS C2 C3

5 2

V1 C C

7 3

JBB-G JBB-HS JBB-NL JBB-DHR

20 13 12 20 16 19 18 14 15

7 6 5 J V9 V7 BR G G VS VS VM C1 C3 HS R3 L3 NL DHR TB3

Figure 10-6. Alternate back panel signal circuit.

CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 119

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120 CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016

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CL-6 SERIES CONTROL INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS MN225016EN January 2016 121

SAFETY

FOR LIFE

Eaton

1000 Eaton Boulevard

Cleveland, OH 44122

United States

Eaton.com

Eaton’s Cooper Power Systems Division

2300 Badger Drive

Waukesha, WI 53188

United States

Eaton.com/cooperpowerseries

Printed in USA

Publication No. MN225016EN/January 2016

Eaton is a registered trademark.

All trademarks are property of their respective owners.

For Eaton's Cooper Power series product information call 1-877-277-4636 or visit: www.eaton.com/cooperpowerseries.

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Key features

User-friendly interface
Metering-PLUS
Programmable inputs and outputs
Compact Flash card for data logging
SCADA compatibility
Advanced features
Digital technology
CE compliant
Flashcard uploading and downloading
Multiple communication ports

Frequently asked questions

Refer to the section 'Connecting power to external source terminals' for detailed instructions and diagrams on connecting 120 Vac or 240 Vac external power sources.

The drag-hand reset switch operates a solenoid in the position indicator to move the drag hands to the present tap position.

The CL-6 control offers various operational modes such as automatic, manual, and remote control. The manual also details the remote and reverse power operation modes.

Voltage Regulators

COOPER POWER

SERIES

CL-6 series control installation, operation, and maintenance instructions

DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY

Contents

SAFETY INFORMATION

PRODUCT INFORMATION

SECTION 1: CONTROL PANEL

SECTION 2: CONTROL INSTALLATION

SECTION 3: INITIAL CONTROL PROGRAMMING

SECTION 4: CONTROL OPERATION

SECTION 5: CONTROL PROGRAMMING

SECTION 6: CONTROL FEATURES

Safety for life

Safety information

Safety instructions

Hazard Statement Definitions

SECTION 7: ADVANCED CONTROL FEATURES

SECTION 8: TROUBLESHOOTING

SECTION 9: CONTROL ACCESSORIES

SECTION 10: APPENDIX

Product information

Introduction

Read this manual first

Additional information

Acceptance and initial inspection

Handling and storage

Standards

Quality standards

Description

Section 1: Control panel

Lower panel (grey)

Power switch

Control function switch

Manual (raise/lower) switch

Supervisory switch

Drag-hand reset switch

Neutral light

Voltmeter terminals

Fuse

External source terminals

Connecting power to external source terminals

240 Vac applications to Eaton 240 V control

Option 1:

Option 2:

1:1 Isolation

Transformer

CL-6 Panel

Eaton supplied 2:1 Auto

Transformer on Control

Cabinet Back Panel

CL-6 Panel

1:1 Isolation

Transformer

Eaton supplied 2:1 Auto

Transformer on Control

Cabinet Back Panel

240 Vac applications to Eaton 120 V control

Option 1:

Option 2:

CL-6 Panel

2:1 Isolation

Transformer

CL-6 Panel

2:1 Isolation

Transformer

120 Vac applications to Eaton 120 V control

Option 1:

Option 2:

CL-6 Panel

1:1 Isolation

Transformer

CL-6 Panel

1:1 Isolation

Transformer

Upper panel (black)

Display

Keypad

Alarm indicators