Sorensen XG 850 Watt Programmable DC Power Supply Operation Manual

XG 850 Watt Series

Programmable DC Power Supply

(for firmware version 1.09 and below)

Operation Manua

l

M370078-01 Rev D www.programmablepower.com

About AMETEK

AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and manufacture of precision, programmable power supplies for R&D, test and measurement, process control, power bus simulation and power conditioning applications across diverse industrial segments. From bench top supplies to rack-mounted industrial power subsystems,

AMETEK Programmable Power is the proud manufacturer of Elgar, Sorensen, California

Instruments and Power Ten brand power supplies.

AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices with annualized sales of $2.5 billion. The Company has over 11,000 colleagues working at more than 80 manufacturing facilities and more than 80 sales and service centers in the United

States and around the world.

Trademarks

AMETEK is a registered trademark of AMETEK, Inc.

Other trademarks, registered trademarks, and product names are the property of their respective owners and are used herein for identification purposes only.

Notice of Copyright

XG 850 Watt Series Programmable DC Power Supply (for firmware version 1.09 and below)

Operation Manual © 2007-2008 AMETEK Programmable Power, Inc. All rights reserved.

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC.

(“AMETEK”):

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY

TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER

DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR

EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL,

WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH

INFORMATION WILL BE ENTIRELY AT THE USER’S RISK, AND

(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH,

ALTHOUGH STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE

TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT

IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION, WHICH IS POSTED AT

WWW.PROGRAMMABLEPOWER.COM.

Date and Revision

December 2008 Revision D

Part Number

M370078-01

Contact Information

Telephone: 800 733 5427 (toll free in North America)

Fax:

858 450 0085 (direct)

858 458 0267

Email: [email protected]

[email protected]

Web: www.programmablepower.com

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Important Safety Instructions

Before applying power to the system, verify that your product is configured properly for your particular application.

WARNING

Hazardous voltages may be present when covers are removed. Qualified personnel must use extreme caution when servicing this equipment.

Circuit boards, test points, and output voltages also may be floating above

(below) chassis ground.

WARNING

The equipment used contains ESD sensitive parts. When installing equipment, follow ESD Safety Procedures. Electrostatic discharges might cause damage to the equipment.

Only qualified personnel who deal with attendant hazards in power supplies, are allowed to perform installation and servicing.

Ensure that the AC power line ground is connected properly to the Power Rack input connector or chassis. Similarly, other power ground lines including those to application and maintenance equipment must be grounded properly for both personnel and equipment safety.

Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable.

In normal operation, the operator does not have access to hazardous voltages within the chassis.

However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO

HUMAN SAFETY may be normally generated on the output terminals. The customer/user must ensure that the output power lines are labeled properly as to the safety hazards and that any inadvertent contact with hazardous voltages is eliminated.

Guard against risks of electrical shock during open cover checks by not touching any portion of the electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use safety glasses during open cover checks to avoid personal injury by any sudden component failure.

Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary sales organizations can accept any responsibility for personnel, material or inconsequential injury, loss or damage that results from improper use of the equipment and accessories.

SAFETY SYMBOLS

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Product Family: XG 850 Watt Series Programmable DC Power Supply

Warranty Period: Five Years

WARRANTY TERMS

AMETEK Programmable Power, Inc. (“AMETEK”), provides this written warranty covering the

Product stated above, and if the Buyer discovers and notifies AMETEK in writing of any defect in material or workmanship within the applicable warranty period stated above, then AMETEK may, at its option: repair or replace the Product; or issue a credit note for the defective Product; or provide the Buyer with replacement parts for the Product.

The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in accordance with the return procedure specified below. AMETEK will, at its expense, deliver the repaired or replaced Product or parts to the Buyer. Any warranty of AMETEK will not apply if the

Buyer is in default under the Purchase Order Agreement or where the Product or any part thereof:

• is damaged by misuse, accident, negligence or failure to maintain the same as specified or required by AMETEK;

•

•

•

• is damaged by modifications, alterations or attachments thereto which are not authorized by AMETEK; is installed or operated contrary to the instructions of AMETEK; is opened, modified or disassembled in any way without AMETEK’s consent; or is used in combination with items, articles or materials not authorized by AMETEK.

The Buyer may not assert any claim that the Products are not in conformity with any warranty until the Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement.

PRODUCT RETURN PROCEDURE

1. Request a Return Material Authorization (RMA) number from the repair facility (must be

done in the country in which it was purchased):

•

In the USA, contact the AMETEK Repair Department prior to the return of the product to AMETEK for repair:

•

Telephone: 800-733-5427, ext. 2295 or ext. 2463 (toll free North America)

858-450-0085, ext. 2295 or ext. 2463 (direct)

Outside the United States, contact the nearest Authorized Service Center

(ASC). A full listing can be found either through your local distributor or our website, www.programmablepower.com, by clicking Support and going to the

Service Centers tab.

2. When requesting an RMA, have the following information ready:

•

Model number

•

•

Serial number

Description of the problem

NOTE: Unauthorized returns will not be accepted and will be returned at the shipper’s expense.

NOTE: A returned product found upon inspection by AMETEK, to be in specification is subject to an evaluation fee and applicable freight charges.

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About This Manual

Purpose

The Operating Manual provides installation and operating information for the XG 850 Watt Series Programmable DC Power Supply.

Scope

The Manual provides safety information, features and specifications, installation procedures, functional test procedures, and operating procedures for both local (front panel) operation and remote operation.

The Manual does not provide information on the GPIB and Ethernet

(ENET) interface options. See the XG 850 Watt GPIB and Ethernet

Interface Option Operating Manual (Part number M370078-06).

Audience

The Manual is intended for the user who is familiar with electronic power supplies, Constant Voltage and Constant Current operating modes, and the control of output power. The user should be familiar with practicing safe techniques while making supply or pin connections.

Conventions Used

The following conventions are used in this guide.

WARNING

Warnings identify conditions or practices that could result in personal injury or loss of life.

CAUTION

Cautions identify conditions or practices that could result in damage to the unit or other equipment.

Important:

Important notes provide information that is important for you to know. They are not as serious as Warnings or Cautions.

M370078-01 v

About This Manual

Related Information

For related information on this product, see also:

•

XG 850 Watt GPIB and Ethernet Interface Option Operating Manual

(Part number M370078-06) provides information on the GPIB and

Ethernet interface option.

•

XG 850 Watt Series Programmable DC Power Supply: Quick

Reference Guide (Part number M370078-04) is included with your power supply and provides an introduction to using the front panel interface.

•

Rack Mount Kit Options Installation Instructions (Part number

M370078-05) provides information on rack mounting a single or dual XG 850 Watt.

More information about AMETEK Programmable as well as its products and services, is available at www.programmablepower.com.

Acronyms

Acronym

APG

AUX

ENET

FGA

ISOL

OTP

OVP

PSU

TVS

UVP

Definition

Analog Programming

Auxiliary

Ethernet

Finished Goods Assembly

Isolated Analog Programming

Over Temperature Protection

Over Voltage Protection

Power Supply Unit

Transient Voltage Suppressor

Under Voltage Protection

Font Conventions

This Manual uses the following typographical conventions:

7 segment

For display and readback information on the output voltage and current displays.

Command body text Represents SCPI commands.

vi M370078-01

Contents

I1 Introduction

Features and Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2

XG 850 Watt Models - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–3

Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4

Front Panel Display and Controls - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5

Rear Panel Connectors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6

2 Installation

Basic Setup Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Step 1: Inspecting and Cleaning - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3

Initial Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3

Periodic Cleaning - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3

Step 2: Location and Mounting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4

Rack Mounting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4

Purchasing Rack Mount Kits - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4

Ventilation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4

Step 3: Connecting AC Input Power - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5

AC Input Connector - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5

Step 4: Selecting Load Wires - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6

Load Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6

Step 5: Performing Functional Tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–8

Powering the Power Supply On/Off - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–8

Voltage and Current Mode Operation Checks - - - - - - - - - - - - - - - - - - - - - - - - 2–9

Step 6: Connecting Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10

DC Output Connectors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10

Inductive Loads and Batteries - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11

Connecting Single Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–12

Connecting Multiple Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–12

M370046-01 vii

Contents

Step 7: Connecting Remote Sensing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–13

3 Local Operation

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Configuring Settings from the Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Using the 9-Position Mode Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Using the Rotary Adjust/Enter Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Coarse and Fine Adjustment Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3

Navigating the Menu System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5

Setting VOLTS and AMPS Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5

Normal Display Mode and Inactivity Timeout - - - - - - - - - - - - - - - - - - - - - - - - 3–7

Display Messages on the Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–9

Standard Operation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–11

Operating Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–11

Shipped Configuration (Local Operation) - - - - - - - - - - - - - - - - - - - - - - - - - - 3–15

Enabling the Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–15

Enabling the Auxiliary Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16

Output Auto Start Mode (Auto Restart) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16

Auxiliary Auto Start Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–17

Alarms and Errors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–18

Clearing Alarms - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–19

Front Panel ALARM LED - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–20

Alarm Masking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–21

Alarm Output Latching - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–22

Setting Foldback Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–23

Resetting Activated Foldback Protection - - - - - - - - - - - - - - - - - - - - - - - - - - 3–24

Using Over Voltage Protection (OVP)- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–25

Defining the OVP Set Point - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–26

Using Under Voltage Protection (UVP) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–27

Defining the UVP Set Point - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–28

Over Current Protection (OCP) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–28

Using Over Temperature Protection Lock (OTP) - - - - - - - - - - - - - - - - - - - - - - - 3–29

Defining the OTP Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–29

Resetting in Latch Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–29

Using the External Shutdown Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–30

Activating the External Shutdown Function - - - - - - - - - - - - - - - - - - - - - - - - 3–30

Controlling the External Shutdown Function - - - - - - - - - - - - - - - - - - - - - - - - 3–30 viii M370046-01

Contents

Defining the Polarity of the External Shutdown Signal - - - - - - - - - - - - - - - - - 3–31

Interlock Function - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–32

Defining the Interlock Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–32

Power On Status Signal - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–33

Hardware Malfunction Alarms - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–33

Current Configuration Memory Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–34

User Setting Memory Locations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–35

Saving User Setting Memory Locations - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–35

Recalling User Setting Memory Locations - - - - - - - - - - - - - - - - - - - - - - - - - 3–36

Local Lockout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–37

Enabling Local Lockout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–37

Disabling Local Lockout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–37

Resetting the Power Supply - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–39

Using Multiple Power Supplies - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–41

Configuring Multiple Supplies for Series Operation - - - - - - - - - - - - - - - - - - - 3–43

Configuring Multiple Supplies for Current Sharing Operation (APG Method) - 3–45

Connecting to the Load in Local Sensing Mode (Parallel Control Method) - - - 3–47

Connecting to the Load in Remote Sensing Mode (Parallel Control Method) - - 3–48

4 Analog Programming (APG) and Isolated Analog Programming (ISOL)

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–2

Analog Programming (APG) of Output Voltage and Output Current - - - - - - - - - 4–2

Remote Programming Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–3

Analog Programming (APG) Connector J1 - - - - - - - - - - - - - - - - - - - - - - - - - - 4–5

Analog Programming Mode- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–9

Analog Programming With External Voltage Source - - - - - - - - - - - - - - - - - - - 4–9

Voltage-Controlled Voltage APG Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–10

Voltage-Controlled Current APG Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–12

Resistive-Controlled Voltage APG Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–15

Resistive-Controlled Current APG Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–17

Voltage and Current Readback - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–19

Isolated Analog Programming Mode (ISOL) - - - - - - - - - - - - - - - - - - - - - - - - - - 4–20

AUX Output and Isolated Analog Programming (ISOL) Connector - - - - - - - - 4–20

Voltage-Controlled Voltage ISOL Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–24

Voltage-Controlled Current ISOL Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–26

Resistive-Controlled Voltage ISOL Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–29

Resistive-Controlled Current ISOL Setup - - - - - - - - - - - - - - - - - - - - - - - - - - 4–31 ix M370046-01

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Contents

Voltage and Current Readback (Isolated) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–33

5 Remote Operation

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–2

Hardware and Connection Setup- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–3

Configuring Remote Control Using RS-232 - - - - - - - - - - - - - - - - - - - - - - - - - 5–3

Configuring Remote Control Using RS-485 - - - - - - - - - - - - - - - - - - - - - - - - - 5–7

Configuring Remote Control using the USB Connector - - - - - - - - - - - - - - - - - 5–9

Setting Up the PC to Use the USB Connection - - - - - - - - - - - - - - - - - - - - - - - 5–9

Ethernet (ENET) or GPIB Connector (Optional) - - - - - - - - - - - - - - - - - - - - - 5–15

Multiple Power Supply Connections to RS-485 Bus - - - - - - - - - - - - - - - - - - - 5–15

Terminal Configuration- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–17

Data Format - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–17

End of Message - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–17

HyperTerminal - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–17

Selecting the Appropriate Communication Port - - - - - - - - - - - - - - - - - - - - - - 5–20

Multichannel Address Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–21

Remote Interface Addressing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–22

Multichannel Commands Explained - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–23

Status Reporting in SCPI - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–25

Status Registers Model from IEEE 488.2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–27

Status Byte - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–28

Error/Event Queue (ERR) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–28

Questionable Status Register Summary (QSR) - - - - - - - - - - - - - - - - - - - - - - 5–28

Message Available (MAV) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–29

Standard Event Status Summary (ESB) - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–29

Master Summary Status (MSS) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–29

Request Service (RQS) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–29

Operation Status Register Summary (OSR) - - - - - - - - - - - - - - - - - - - - - - - - - 5–30

Standard Event Status Register (SESR) - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–31

Standard SCPI Register Structure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–34

OPERation Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–35

Current SHare Sub-Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–38

Operation Status Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–39

Current Sharing Sub-Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - 5–40

M370046-01

Contents

Shutdown Sub-Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–41

Protection Sub-Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–42

QUEStionable Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–43

VOLTage Sub-Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–46

TEMPerature Sub-Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–46

Questionable Status Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - 5–47

Voltage Status Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–48

Temperature Status Register Commands - - - - - - - - - - - - - - - - - - - - - - - - - - 5–49

SCPI Error/Event Queue - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–50

Reset Command - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–52

Clear All Status Registers - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–53

SCPI Preset Status - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–54

Command Line Help System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–55

Locking and Unlocking the Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–60

Auto Sequence Programming - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–60

Configure Other Protection Mechanisms - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–67

Foldback Protection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–67

Over Temperature Protection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–68

Interlock Enable/Disable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–68

Save and Recall - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–69

Set Analog Programming Level - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–69

Set Remote Programming Interface - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–70

Protection Mask (Enable Alarms) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–71

6 Calibration and Troubleshooting

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–2

Main Voltage and Current Calibration Principle - - - - - - - - - - - - - - - - - - - - - - - - - 6–3

Understanding the Problem - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–3

Step 1: Gain Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–4

Step 2: Offset Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–4

Step 3: Recalibrate Gain - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–5

Calibrating the Output Voltage- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–6

Gain Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–6

Offset Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–6

Calibrating the Output Current - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–7

Gain Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–7

Offset Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–8 xi M370046-01

Contents

Over Voltage Protection Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–9

Non-isolated Analog Programming Calibration- - - - - - - - - - - - - - - - - - - - - - - - - 6–10

Non-isolated Voltage Monitoring Calibration - - - - - - - - - - - - - - - - - - - - - - - 6–10

Non-isolated Current Monitoring Calibration - - - - - - - - - - - - - - - - - - - - - - - 6–11

Non-isolated Voltage Programming of Voltage Calibration - - - - - - - - - - - - - - 6–12

Non-isolated Resistive Programming of Voltage Calibration - - - - - - - - - - - - - 6–13

Non-isolated Voltage Programming of Current Calibration - - - - - - - - - - - - - - 6–14

Non-isolated Resistive Programming of Current Calibration - - - - - - - - - - - - - 6–15

Calibration Procedure for Isolated Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–16

Isolated Voltage Monitoring Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–16

Isolated Current Monitoring Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–17

Isolated Voltage Programming of Voltage Calibration - - - - - - - - - - - - - - - - - 6–18

Isolated Resistive Programming of Voltage Calibration - - - - - - - - - - - - - - - - 6–19

Isolated Voltage Programming of Current Calibration - - - - - - - - - - - - - - - - - 6–20

Isolated Resistive Programming of Current Calibration - - - - - - - - - - - - - - - - - 6–21

Calibrating the Input Voltage APG Signal - - - - - - - - - - - - - - - - - - - - - - - - - 6–22

Calibrating the Input Current APG Signal - - - - - - - - - - - - - - - - - - - - - - - - - - 6–23

Storing and Loading Calibration Parameters- - - - - - - - - - - - - - - - - - - - - - - - - - - 6–25

Restore Factory Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–26

User Diagnostics - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–27

Emergency Shutdown - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–27

Unusual or Erratic Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–27

Troubleshooting for Operators - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–28

A SCPI Command Reference

SCPI Conformance Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2

IEEE 488.2/SCPI Syntax and Style - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2

SCPI Command Hierarchy - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–3

Using SCPI Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–4

Parameter Types - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–7

SPCI Command Tree - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–8

SCPI Command Summary - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–14

B Error Messages

Error Messages - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–2

Command Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–3

Execution Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–4

Device-Specific Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–5 xii M370046-01

Contents

Query Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–6

C Specifications

Electrical Specifications for XG 850 Watt - - - - - - - - - - - - - - - - - - - - - - - - - - - - C–2

AC Line Input Specifications for XG 850 Watt - - - - - - - - - - - - - - - - - - - - - - C–3

Remote Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C–4

Common Specifications for All Models - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C–5

Warranty and Product Information

- - - - - - - - - - - - - - - - - - - - - - - - - - WA–1

Index

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - IX–1 xiii M370046-01

xiv

Figures

Figure 1-1 XG 850 Watt Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4

Figure 1-2 Front Panel Display and Controls - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5

Figure 1-3 Rear Panel: 6 V to 40 V Models- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6

Figure 1-4 Rear Panel: 60 V to 150 V Models - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6

Figure 1-5 Rear Panel: 300 V to 600 V Models - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6

Figure 2-1 Maximum Load Wire Length for 1 V Line Drop- - - - - - - - - - - - - - - - - - 2–7

Figure 2-2 Diode Placement - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11

Figure 2-3 Connecting Single Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–12

Figure 2-4 Remote Sense Connection- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–13

Figure 3-1 9-Position Mode Control- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Figure 3-2 Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–7

Figure 3-3 Front Panel Menu System - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–8

Figure 3-4 Operating Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–13

Figure 3-5 Split Supply Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–42

Figure 3-6 Series Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–43

Figure 3-7 Load Connections in Remote Sensing Mode - - - - - - - - - - - - - - - - - - - 3–44

Figure 3-8 Load Connections in Local Sensing Mode - - - - - - - - - - - - - - - - - - - - - 3–47

Figure 3-9 Load Connections in Remote Sensing Mode (Parallel Control Method) - 3–48

Figure 4-1 APG Connector Terminals - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–5

Figure 4-2 Inserting Screwdriver into Spring Terminal Block - - - - - - - - - - - - - - - - 4–7

Figure 4-3 APG and DC Output Connector - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–7

Figure 4-4 Programming Output Voltage using an External Voltage Source - - - - - - - 4–9

Figure 4-5 Programming Output Current using an External Voltage Source - - - - - - - 4–9

Figure 4-6 Programming Output Voltage using an External Resistor - - - - - - - - - - - 4–14

Figure 4-7 Programming Output Current using an External Resistor - - - - - - - - - - - 4–14

Figure 4-8 Voltage Readback Using APG Connector J1 - - - - - - - - - - - - - - - - - - - 4–19

Figure 4-9 Current Readback Using APG Connector J1 - - - - - - - - - - - - - - - - - - - 4–19

Figure 4-10 AUX Output and ISOL Connector Pinout - - - - - - - - - - - - - - - - - - - - - 4–20

Figure 4-11 Programming Output Voltage using an Isolated External Voltage Source 4–23

Figure 4-12 Programming Output Current using an Isolated External Voltage Source 4–23

Figure 4-13 Programming Output Voltage using an Isolated External Resistor - - - - - 4–28

Figure 4-14 Programming Output Current using an Isolated External Resistor - - - - - 4–28

M370046-01 xv

Figures

Figure 4-15 Isolated Voltage Monitoring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–33

Figure 4-16 Isolated Current Monitoring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–33

Figure 5-1 Remote Control Connectors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–3

Figure 5-2 RS-232 Communication Cable with DB-9 Pinout - - - - - - - - - - - - - - - - - 5–5

Figure 5-3 DB-25 Pinout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–5

Figure 5-4 RS-232 Communication Cable with DB-25 Pinout - - - - - - - - - - - - - - - - 5–6

Figure 5-5 RS-485 Communication Cable with DB-9 - - - - - - - - - - - - - - - - - - - - - - 5–7

Figure 5-6 RS-485 Communication Cable from Master to Slave Unit - - - - - - - - - - - 5–8

Figure 5-7 Found New Hardware Wizard - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–10

Figure 5-8 Install Hardware Device Drivers - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–10

Figure 5-9 Completing the New Hardware Wizard - - - - - - - - - - - - - - - - - - - - - - - 5–11

Figure 5-10 Device Manager - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–12

Figure 5-11 Communications Port (COM1) Properties - - - - - - - - - - - - - - - - - - - - - 5–13

Figure 5-12 Completing the new hardware wizard - - - - - - - - - - - - - - - - - - - - - - - - 5–13

Figure 5-13 Multi Power Supply Connection to RS-485 Bus - - - - - - - - - - - - - - - - - 5–15

Figure 5-14 USB Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–18

Figure 5-15 ASCII Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–19

Figure 5-16 SCPI Status Reporting Model - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–26

Figure 5-17 IEEE 488.2 Register Model- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–27

Figure 5-18 Summary of Standard Event Status Register - - - - - - - - - - - - - - - - - - - 5–32

Figure 5-19 SCPI Register Model - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–34

Figure 5-20 Operation Status Register Fanout - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–35

Figure 5-21 SCPI QUEStionable Registers Fanout- - - - - - - - - - - - - - - - - - - - - - - - 5–44

Figure 6-1 Offset (Intercept) Error and Gain (Slope) Error- - - - - - - - - - - - - - - - - - - 6–3

Figure 6-2 Calibration: Step 1 Gain Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - 6–4

Figure 6-3 Calibration: Step 2 Offset Calibration - - - - - - - - - - - - - - - - - - - - - - - - - 6–4

Figure 6-4 Calibration: Step 3 Recalibrate Gain - - - - - - - - - - - - - - - - - - - - - - - - - - 6–5

Figure C-1 XG 850 Watt Mechanical Dimensions: 6 to 40 V Models - - - - - - - - - - - C–7

Figure C-2 XG 850 Watt Mechanical Dimensions: 60 V to 600 V Models - - - - - - - - C–8

M370046-01 xvi

Tables

Table 1-1 XG 850 Watt Series Voltage and Current Ranges - - - - - - - - - - - - - - - - - 1–3

Table 2-1 Basic Setup Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Table 2-2 Current Carrying Capacity for Load Wiring - - - - - - - - - - - - - - - - - - - - - 2–6

Table 3-1 Select and Set from the Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3

Table 3-2 Front Panel Display Text - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–9

Table 3-3 Shipped Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–15

Table 3-4 Alarm Order of Precedence - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–18

Table 3-5 Alarm Mask Bit Positions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–21

Table 3-6 Alarm Latch Bit Positions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–22

Table 3-7 Power Cycle Saved/Recalled Settings - - - - - - - - - - - - - - - - - - - - - - - - 3–34

Table 3-8 User Accessible Saved/Recalled Settings- - - - - - - - - - - - - - - - - - - - - - 3–35

Table 3-9 Power Supply Default Settings- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–39

Table 4-1 Monitor Lines - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–3

Table 4-2 Remote Programming Options- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–4

Table 4-3 APG Pins and Functions J1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–5

Table 4-4 AUX Output and ISOL Connector Pins and Functions J3- - - - - - - - - - - 4–21

Table 5-1 Remote Control Connector Pins and Functions J4 and J6 - - - - - - - - - - - - 5–3

Table 5-2 DB-9 Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4

Table 5-3 RJ-45 Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4

Table 5-4 DB-25 Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–5

Table 5-5 DB-9 Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–7

Table 5-6 RJ-45 Plug Pinouts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–7

Table 5-7 RJ-45 Plug on Slave Unit - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–8

Table 5-8 Rules for Multichannel Responses - - - - - - - - - - - - - - - - - - - - - - - - - - 5–23

Table 5-9 Status Byte Summary Register- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–28

Table 5-10 Standard Event Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–32

Table 5-11 OPERation Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–36

Table 5-12 OPERation SHUTdown Status Register - - - - - - - - - - - - - - - - - - - - - - 5–37

Table 5-13 OPERation SHUTdown PROTection Status Register - - - - - - - - - - - - - 5–37

Table 5-14 OPERation CSHare Status Register - - - - - - - - - - - - - - - - - - - - - - - - - 5–38

Table 5-15 QUEStionable Status Register - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–45

Table 5-16 QUEStionable VOLTage Status Register- - - - - - - - - - - - - - - - - - - - - - 5–46

M370046-01 xvii

Tables

Table 5-17 QUEStionable TEMPerature Status Register - - - - - - - - - - - - - - - - - - - - 5–46

Table 5-18 Preset Values of User Configurable Registers - - - - - - - - - - - - - - - - - - - 5–54

Table 5-19 Alarms Bit Mask - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–71

Table 6-1 Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–28

Table A-1 IEEE 488.2 Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–14

Table A-2 Readback Commands- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–16

Table A-3 SCPI Commands for Output Control - - - - - - - - - - - - - - - - - - - - - - - - A–17

Table A-4 SCPI Commands for Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - A–18

Table A-5 SCPI Commands to Clear All Protection Mechanisms- - - - - - - - - - - - - A–21

Table A-6 SCPI Commands for Foldback Protection - - - - - - - - - - - - - - - - - - - - - A–21

Table A-7 SCPI Commands for Power - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–22

Table A-8 SCPI Commands for Triggering - - - - - - - - - - - - - - - - - - - - - - - - - - - A–22

Table A-9 System Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–23

Table A-10 Status Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–26

Table A-12 Auto Sequence Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–34

Table A-11 Protection Commands - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–34

Table B-1 Command Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–3

Table B-2 Execution Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–4

Table B-3 Device-Specific Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–5

Table B-4 Query Error List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B–6

Table C-1 XG 850 Watt Electrical Specifications for 6 V to 600 V Models - - - - - - - C–2

Table C-2 Remote Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C–4 xviii M370046-01

1

Introduction

Chapter 1, Introduction, describes the features of the XG

850 Watt Series Programmable DC Power Supply.

Introduction

Features and Options

The XG 850 Watt Series Programmable DC Power Supply provides stable, variable output voltage and current for a broad range of development and system requirements. The power supplies have a high power density and numerous industry standard interfaces:

• RS-232, RS-485, analog programming (APG), isolated analog programming (ISOL), and USB built-in ports.

• Optional GPIB or Ethernet (ENET) control for remote operation and readback.

• Seamless switching between front panel and any digital interface

(RS-232, RS-485, USB, GPIB or ENET).

• Simultaneous digital displays for both voltage and current.

• Front panel control by rotary Adjust/Enter knob, permitting high resolution output setting.

• Active Power Factor Correction (PFC) reduces input current and input current harmonics.

• Automatic crossover system allowing the power supply to switch between Constant Current and Constant Voltage operating modes.

• Parallel or series connection among multiple units to produce greater diversity or to use in higher power applications.

• Short-circuit protection of DC outputs provideing greater operating safety.

• Built-in APG and ISOL interface to provide a galvanically isolated analog voltage control of the output, master/slave output tracking, and remote Enable/disable for safety and precision.

• Remote output voltage sensing to automatically compensate for cable losses.

• Software calibrated.

• Three user setting memory locations.

1-2 M370078-01

XG 850 Watt Models

XG 850 Watt Models

Table 1-1 lists the models for firmware version 1.09 and below, in the XG

850 Watt series covered by this Manual.

Table 1-1 XG 850 Watt Series Voltage and Current Ranges

Model Output Voltage Output Current

6-110

8-100

12-70

20-42

33-25

40-21

60-14

80-10.5

100-8.5

150-5.6

300-2.8

600-1.4

0–6 V

0–8 V

0–12 V

0–20 V

0–33 V

0–40 V

0–60 V

0–80 V

0–100 V

0–150 V

0–300 V

0–600 V

0–110 A

0–100 A

0–70 A

0–42 A

0–25 A

0–21 A

0–14 A

0–10.5 A

0–8.5 A

0–5.6 A

0–2.8 A

0–1.4 A

1

M370078-01 1-3

Introduction

Front Panel

Figure 1-1 XG 850 Watt Front Panel

Item Description

1

2

3

Front panel power switch

Front panel display. See Figure 1-2 for details.

Air Intake Vents

1-4 M370078-01

Front Panel Display and Controls

Front Panel

1

Figure 1-2 Front Panel Display and Controls


7

8

5

6

3

4

1

2

9

10

Rotary Adjust/Enter control

Constant Voltage (CV) Mode LED (green)

Model Identification Label

Output Voltage Display

Constant Current (CC) Mode LED (green)

Output Current Display

Alarm Indicator LED (red)

OUTPUT ENABLE Main button

OUTPUT ENABLE Aux button

9-Position Mode Control (For detailed information, see “Configuring Settings from the

Front Panel” on page 3–2).

M370078-01 1-5

Introduction

Rear Panel Connectors

1 2

3 4

J2

J4

J3

J1

6

7 8

9

Figure 1-3 Rear Panel: 6 V to 40 V Models

J5

1

2 3

J2

J4

J6

10

4

J3

J1

SN

J5

6 7 8 9


J6

10

1 2

3 4

J2

J4

J1

J3

SN

J5 J6

6 7 8 9


10

1-6

5

11

100 - 240 Vac

47-63 Hz, 11.5 –6A

MADE IN CANADA

5

11

100 - 240 Vac

47-63 Hz, 11.5 –6A

MADE IN CANADA

5

100 - 240 Vac

47-63 Hz, 11.5 –6A

MADE IN CANADA

11

M370078-01

Rear Panel Connectors


1

2

6 V– 40 V Models: DC Output Terminal Positive

60 V–150 V Models: DC Output Connectors Positive (6.5 mm hole diameter)

300 V–600 V Models: DC Output Connectors Positive (6.5 mm hole diameter)

6 V– 40 V Models: DC Output Terminal Negative

60 V–150 V Models: DC Output Connectors Negative (6.5 mm hole diameter)

300 V–600 V Models: DC Output Connectors Negative (6.5 mm hole diameter)

5

6

3 (J2) Ethernet (ENET) or GPIB Connector (optional)

4 (J4) RS-232/RS-485 Connector In Port

AC Input Connector (IEC Type)

Chassis Ground Stud

7 (J1) Analog Programming (APG) Connector. For pin information, see page 4–5.

8 (J3) AUX Output and Isolated Analog Programming (ISOL) Connector. For pin information, see page 4–20.

9 (J5) USB Connector

10 (J6) RS-485 Connector Multichannel Port

11 Fan Exhaust Vents

1

M370078-01 1-7

1-8

2

Installation

Chapter 2, Installation, provides information and

procedures for inspecting, installing, and testing the power supply.

Installation

Basic Setup Procedure

Table 2-1 provides a summary of the basic setup procedure with

references to the relevant sections in this chapter. Refer to this table if you are unfamiliar with the installation requirements for the power supply.

Complete each step in the sequence given.

Table 2-1 Basic Setup Procedure

Step Description

1 Inspect

2

3

4

5

6

7

Install

Connect Input

Power

Select Wires

Test

Connect Loads

Connect Remote

Sensing (if required)

Action Reference

Inspect the power supply.

Install the power supply

(benchtop or rack mount).

Ensure adequate ventilation.

Connect AC input power.

“Step 1: Inspecting and Cleaning” on page 2–3.

“Step 2: Location and Mounting” on page 2–4.

Select wires that are correctly rated for the maximum DC output current.

“Step 3: Connecting AC Input

Power” on page 2–5.

“Step 4: Selecting Load Wires” on page 2–6.

Perform functional tests for voltage mode operation, current mode operation, and front panel controls.

“Step 5: Performing Functional

Tests” on page 2–8.

Connect the load wires to the

DC output.

Connect remote sensing connectors on power supply to load.

“Step 6: Connecting Loads” on page 2–10.

“Step 7: Connecting Remote

Sensing” on page 2–13.

2-2 M370078-01

Step 1: Inspecting and Cleaning

Step 1: Inspecting and Cleaning

Initial Inspection

When you first receive your unit, perform a physical check:

1. Inspect the unit for any scratches and cracks, broken switches, connectors or displays.

2. Ensure that the packing box contains the 7.5 foot (2.5 m) power cord.

3. If you see external damage or suspect internal damage, contact the carrier immediately.

Periodic Cleaning

The power supply only requires periodic cleaning, not routine servicing.

Whenever a unit is removed from operation, clean the metal surfaces with naptha or an equivalent solvent, and clean the front panel with a weak solution of soap and water. Use low-pressure compressed air to blow dust from components on the printed circuit boards.

2

M370078-01 2-3

Installation

Step 2: Location and Mounting

The power supply may be rack-mounted or used in benchtop applications.

Rack Mounting

The XG 850 Watt power supply is designed to fill half of a standard

19 inch (483 mm) equipment rack.

Units can be combined with the same models in the 850 W series for customer applications.

Purchasing Rack Mount Kits

Contact Customer Service (see “Contact Information” on page i) about purchasing the Rack Mount Kit options for XG 850 Watt. For a list of the part numbers, see “Part Numbers for Rack Mount Kits” on page iii.

Installation information for the different rack mount options are provided with the rack mount kits.

For XG product support, visit www.programmablepower.com and navigate to the XG home page.

Ventilation

Whether operating the power supply in a rack or on a bench, allow air to reach the ventilation inlets on the front and rear of the unit for cooling.

The direction of airflow is from the front of the unit to the back of the unit. Ventilation space is not required at the top, bottom or sides of the power supply.

2-4 M370078-01

Step 3: Connecting AC Input Power

Step 3: Connecting AC Input Power

WARNING: Shock hazard

Disconnect AC power from the unit before removing the cover. Even with the front panel power switch in the Off position, live line voltages are exposed when the cover is removed. Repairs must be made by an Authorized Service Center.


There is a potential shock hazard if the power supply chassis and cover are not connected to an electrical ground via the safety ground in the AC input connector. Ensure that the power supply is connected to a grounded AC outlet with the recommended AC input cord configured for the available line voltage as described in this section.


The AC input cord is the disconnect device for the power supply. The plug must be a non-locking plug which is readily identifiable by and accessible to the operator. The input cord must be no longer than 9.84 feet (3 m).

AC Input Connector

The AC input connector is a standard IEC 16 A 250 V male connector located on the rear panel of the power supply. The AC input cord provided is rated for 30 A, 300 V and appropriate for use in any country.

2

M370078-01 2-5

Installation

Step 4: Selecting Load Wires

This section provides recommendations for selecting minimum load wire sizes.

Load Wiring

To select the wiring for connecting the load to the power supply, consider the following factors:

• Insulation rating of the wire.

• Current carrying capacity of the wire.

• Maximum load wiring length for operation with remote sense lines.

• Electrical noise and impedance effects of the load lines.

Insulation Rating

Use load wiring with a minimum insulation rating equivalent to the maximum output voltage of the power supply.

Current Carrying Capacity

The load wiring must have a current carrying capacity greater than the output rating of the power supply to ensure that the load wiring will not be

damaged if the load is shorted. Table 2-2 shows the maximum current

rating for various gauges of wire rated for 105 °C operation, based on a maximum current density of 450 A/cm

2

.

Operating at the maximum current rating shown in Table 2-2 results in an

approximately 30 °C temperature rise for an appropriately-sized load wire operating in free air. Where load wiring must operate in areas with elevated ambient temperatures or bundles with other wiring, use larger gauges or wiring rated for higher temperatures.

Table 2-2 Current Carrying Capacity for Load Wiring

Wire Size

(AWG)

12

10

8

20

18

16

14

Maximum Current

(Amps)

16

21

36

2.5

4

6

10

Wire Size

(AWG)

2

1

6

4

1/0

2/0

Maximum Current

(Amps)

61

97

155

192

247

303

2-6 M370078-01

Step 4: Selecting Load Wires

Maximum Load Wiring Length For Operation With Sense Lines

2

Figure 2-1 Maximum Load Wire Length for 1 V Line Drop

Noise and Impedance Effects

To minimize noise pickup or radiation, use shielded twisted pair wiring of the shortest possible length for load sense wires. Connect the shield to the power supply chassis. Where shielding is impossible or impractical, simply twisting the wires together will offer some noise immunity.

M370078-01 2-7

Installation

Step 5: Performing Functional Tests

The functional test procedures include:

• Power-on and front panel functional checks

• Voltage mode operation and current mode operation checks.

For information on local operation, see “Local Operation” on page 3–1 for adjusting front panel controls and settings.

Powering the Power Supply On/Off

To power on the power supply:

1. Ensure that the front panel power switch is in the Off position.

2. Ensure that the AC line voltage is within operating range.

3. Connect the line cord to a grounded AC outlet.

4. Turn the front panel power switch to the On position.

After a short power-on delay, 8888 8888 illuminates on the output voltage and current displays, followed by PSU On.

After approximately 1 second, the display returns to normal status.

To power off the power supply:

◆ Turn the front panel power switch to the Off position.

AC FAIL will blink on the display. The ALARM LED illuminates.

After a short delay, all lights on the display will not be illuminated.

2-8 M370078-01

Step 5: Performing Functional Tests

Voltage and Current Mode Operation Checks

To perform the voltage and current mode operation checks:

1. Ensure that the front panel power switch is in the On position and the output is disconnected.

2. If the OUTPUT ENABLE Main button is illuminated, press the button to turn off the output.

3. To check voltage mode operation, turn the 9-position mode control to the VOLTS position.

The voltage set point will blink dimming and then return to full brightness. For more information, see “Local Operation” on page 3–1.

4. Adjust the voltage to 5 V.

5. To check current mode operation, turn the 9-position mode control to

AMPS position.

Verify that the current set point is blinking in the output current display.

6. Adjust the current to 1 A.

7. Press the OUTPUT ENABLE Main button to turn On.

8. Turn the front panel power switch to the Off position.

9. Turn the front panel power switch to the On position.

10. Connect a short circuit across the output terminals. Use leads of

sufficient current carrying capacity. (See “Step 4: Selecting Load

Wires”.)

11. Press the OUTPUT ENABLE Main button to enable the output. The button will be illuminated when the output is enabled.

CC Mode LED illuminates and the voltage and current are displayed.

CV Mode LED illuminates and the preset load current is displayed.


2

M370078-01 2-9

Installation

Step 6: Connecting Loads

This section describes how to connect loads to the power supply for both single and multiple loads.


There is a shock hazard at the power supply output when operating at an output greater than 40 V. To protect personnel against accidental contact with hazardous voltages, ensure that the load and its connections have no accessible live parts.

CAUTION: Cable damage

When making connections to the output terminals, ensure terminals of opposite polarity do not touch. Load cables and sense wires should be provided with strain relief.

DC Output Connectors


Disconnect the AC input before making any connections. A shock hazard may be present at the output terminals. Allow 15 seconds after the AC power has been removed before making any connections.

6 V–40 V Models

The 6 V–40 V models are equipped with output terminals, as shown in

Figure 1-3.

60 V–150 V Models

The 60 V–150 V models are equipped with output connectors, as shown in Figure 1-4. These models have output currents that may require users to use wire diameters that would not fit into a single output connector, so there are two output connectors in parallel to increase the potential current carrying capacity of load wiring.

300 V–600 V Models

The 300 V–600 V models are equipped with output connectors, as shown in Figure 1-5.

2-10 M370078-01

Step 6: Connecting Loads

Inductive Loads and Batteries

Selecting

Diodes

CAUTION

The XG power supply requires freewheeling and blocking diodes across the output while driving inductive loads or batteries to protect the power supply from damage caused by power being fed back into the supply and from high voltage transients.

The diode must have a voltage rating at least 20% greater than the power supply's output voltage and have a current rating greater than or equal to the power supply's output rating. Connect the cathode to the positive output and the anode to the return.

Where positive load transients such as back EMF from a motor may ocAMPS, connect a Transient Voltage Suppressor (TVS) or a varistor across the output to protect the power supply. The breakdown voltage rating for the TVS or varistor must be approximately 10% higher than the rated supply output.

2

M370078-01

Figure 2-2 Diode Placement

For a detailed Application Note, please go to: www.programmablepower.com and click SUPPORT.

2-11

Installation

Connecting Single Loads

Figure 2-3 shows the recommended load connections for a single load

which is sensing its voltage locally. Local sense lines shown are the default connections at the rear panel APG J1 connector (see Figure 4-1 on page 4–5). The load lines should use the largest gauge and shortest length of wire possible to ensure optimal performance.

You do not need remote sensing for basic operation of your power supply.

However, if you wish to correct any small drops in your load lines, then

use the remote sensing feature. See “Step 7: Connecting Remote Sensing” on page 2–13 for more information.

–

Local Sense

J1.1

J1.2

+

Output

Power Supply

–

Output

+

Local Sense

J1.5

J1.6

+

Terminal

Load

–

Terminal

Figure 2-3 Connecting Single Loads

Connecting Multiple Loads

The proper connection of distributed loads is an important aspect of power supply use. The common method of connection is a radial load connection. Power is connected to each load individually from a single pair of terminals designated as the positive and negative distribution terminals. This pair of terminals may be the power supply output terminals, the load terminals, or a distinct set of terminals especially established for distribution use. In this scheme, there are no ground loops and the effect of one load upon another is minimized.

2-12 M370078-01

Step 7: Connecting Remote Sensing

Step 7: Connecting Remote Sensing


There is a potential shock hazard at the sense connectors when using a power supply at an output greater than 40 V. Select wiring with a minimum insulation rating equivalent to the maximum output voltage of the power supply for use as local sense jumpers or for remote sense wires. Ensure that connections at the load end are shielded to prevent contact with hazardous voltages.

Remote sensing permits you to shift the regulation point of the power supply from the output terminals to the load or other distribution terminals.

Use shielded twisted pair wiring of 20 to 26 AWG for best noise performance. Make sure that the shielded twisted pair wiring insulation is rated higher than the maximum output voltage of the power supply. If possible, one end of the shield of the sense lines should be attached to the chassis ground of the power supply.

Pin J1.6 on APG connector

-SNS

Pin J1.1 on APG connector

+SNS load output +

Output terminals on power supply output -

Chassis ground stud

Figure 2-4 Remote Sense Connection

To connect the remote sense wires:

1. Ensure that the front panel power switch is in the Off position.

2. Using a small flat blade screwdriver, remove the two sense jumpers from pins J1.1 and J1.2, and from pins J1.5 and J1.6 on the APG

Connector. See Figure 4-1, “APG Connector Terminals” on page 4–5.

M370078-01 2-13

2

Installation

3. Connect one end of the shield of the twisted pair wire to the chassis ground point on the power supply.

4. Connect the positive sense line (+SNS) from the positive regulation point as close as possible to the load terminals to pin J1.1.

5. Connect the negative sense line (–SNS) from the return of the load to pin J1-6.

To compensate for losses in power leads connected to the output, the power supply provides sense connections beside the output terminals.

With remote sense leads in place, the power supply regulates to the displayed voltage at the point where the sense lines are connected to the output leads. With the sense lines disconnected, the power supply regulates the voltage at the output terminals.

CAUTION: Equipment damage

Do not operate the power supply with sense lines connected to the load without also connecting the load power leads to the output terminals.

CAUTION: Reverse polarity

Avoid reversing positive (+) and negative (–) sense connections.

When using remote sense to compensate for load line losses, ensure that the positive sense line is connected to the positive load terminal and the negative sense line is connected to the negative load terminal. Do not reverse these connections or the power supply may be damaged.

Important:

Long load leads with large capacitance at the load and remote sensing can cause voltage instability due to inductance of the load leads.

Measures to reduce inductance and/or capacitance (raising resonant frequency) or using local sense can be beneficial in stabilizing the system.

2-14 M370078-01

3

Local Operation

Chapter 3, Local Operation, provides the procedures for

local (front panel) operation such as:

• Configuring settings.

• Operating in constant voltage mode and constant current mode.

• Using the protection features.

• Using multiple power supplies.

Local Operation

Introduction

Once you have installed the power supply and connected both the AC input power and the load (covered in “Installation” on page 2–1), the power supply is ready for local operation. To turn the power supply on, see “Powering the Power Supply On/Off” on page 2–8.

Configuring Settings from the Front Panel

Using the 9-Position Mode Control

The 9-position mode control is used with the rotary Adjust/Enter control to configure settings in local operation. See Figure 1-2, “Front Panel

Display and Controls” on page 1–5 for location of the front panel features.

Using the 9-position mode control, select one of nine modes: VOLTS,

AMPS, FLD, PRT, SAV, RCL, CAP, and VAP. See Figure 3-1 and Table

3-1 for detailed information on the nine modes.

Figure 3-1 9-Position Mode Control

Using the Rotary Adjust/Enter Control

The rotary Adjust/Enter control is used to change settings and set the value selected. The front panel displays information on the output voltage and output current displays. Each display has a maximum of four characters that are made up of 7 segments.

3-2 M370078-01

Configuring Settings from the Front Panel

Coarse and Fine Adjustment Modes

Coarse adjustment mode

Fine adjustment mode

The coarse and fine adjustment modes are used for setting the voltage and current set points, OVP and UVP settings.

When using local operation to set the current and voltage set points, use the coarse adjustment mode (default) followed by the fine adjustment mode (see next). The coarse adjustment mode quickly adjusts the settings in large increments to reach the desired value.

Pressing the rotary Adjust/Enter control to change the mode to fine adjustment mode, provides the ability to manipulate the last significant digit. Once the exact desired value for the setting has been selected, press the rotary Adjust/Enter control to commit the value to the unit.

Table 3-1 Select and Set from the Front Panel

9 Positions on the Mode

Control Knob

VOLTS (Voltage

Programming)

AMPS (Current

Programming)

FLD (Foldback)

PRT (Protection)

SAV (Save User Preset)

RCL (Recall User Preset)

Turning the rotary Adjust/Enter control lets you…

Pressing the rotary Adjust/

Enter control lets you…

Select the voltage set point in coarse or fine adjustment modes. See

“Automatic Mode Crossover” on page 3–12.

Set the value selected and cycle to the next setting.

Select the current set point in coarse or fine adjustment modes. See

“Constant Current Mode Operation” on page 3–12.


Select Foldback option: CC, CV or

none. See “Setting Foldback Mode” on page 3–23.


Select the OVP set point (see

page 3–25).

Select the UVP set point (see

page 3–27.)

Select OTP temperature and

Shutdown (see page 3–29.)


Select the user setting memory

location. See “Saving User Setting

Memory Locations” on page 3–35.

Select the user setting memory

location. See “Recalling User

Setting Memory Locations” on page 3–36.

Save user setting memory values.

Load user setting memory values into the power supply.

M370078-01 3-3

3

Local Operation

Table 3-1 Select and Set from the Front Panel

9 Positions on the Mode

Control Knob

Turning the rotary Adjust/Enter control lets you…

CAP (Current Analog

Programming)

VAP (Voltage Analog

Programming)

Select the programming source and select the range.

Select the programming source and select the range.

PGM (Remote Programming) Select the remote interface to be used for control.

Pressing the rotary Adjust/

Enter control lets you…



Select interface and cycle to the next setting.

3-4 M370078-01

Navigating the Menu System

Navigating the Menu System

The menu system of the XG follows a select and set model with the

exception of the VOLTS and AMPS modes. See “Setting VOLTS and

AMPS Modes”.

The general procedure for setting up the features in the select and set model is:

1. To select a mode, rotate the 9-position Mode control to the desired mode or press the rotary Adjust/Enter control once to activate the

current selection on the mode control knob. See Figure 3-3.

2. To select the feature or setting, rotate the rotary Adjust/Enter control to scroll through the different available settings of that mode.

The settings appear on the output current display.

3. Press the rotary Adjust/Enter control to select the feature or setting.

4. Set each value using the rotary Adjust/Enter control. When the value has been selected, press the rotary Adjust/Enter control to commit the updated value. Additional values may become available, depending on the setting that is being configured.

Setting VOLTS and AMPS Modes

The only exceptions to the select and set model are the VOLTS and

AMPS modes which do not allow the selection of tracking and select and set mode by turning the rotary Adjust/Enter control. In VOLTS and

AMPS modes, the default entry mode setting is automatically selected as either voltage or current tracking, respectively.

Voltage and current values can be set in tracking mode or select and set mode using the rotary Adjust/Enter control:

• Tracking mode—the new values take effect as the rotary Adjust/Enter control is rotated.

• Select and set mode—the new values do not take effect until the

rotary Adjust/Enter control is pressed. See “Normal Display Mode and Inactivity Timeout” on page 3–7.

3

M370078-01 3-5

Local Operation

To access the tracking mode for entering voltage and current:

1. Select the VOLTS or AMPS position on the 9-position mode control.

If the set point is blinking, the unit is in coarse tracking mode.

• When the VOLTS mode is selected, the voltage set point will blink in the output voltage display.

• When the AMPS mode is selected, the current set point will blink in the output current display.

2. Use the rotary Adjust/Enter control to adjust the set point.

The adjustments you make to the set point affect the opposing output value (voltage when in AMPS mode or current when in VOLTS mode), which will update in the non-blinking display.

3. Press the rotary Adjust/Enter control to enter fine adjust tracking mode.

The set point blinks faster when the unit is in fine adjust tracking mode.

4. Use the rotary Adjust/Enter control to fine tune the set point.

5. Once the set point has been selected, press the rotary Adjust/Enter control to exit tracking mode and return to normal display mode.

To access the select and set entry mode for the voltage and current set points:

1. Select VOLTS or AMPS position on the 9-position mode control.

2. Press the rotary Adjust/Enter control three times in succession to enter coarse Pre-Set Adjustment.

3. Press the rotary Adjust/Enter control one more time to enter fine Pre-

Set Adjustment.

4. Press the rotary Adjust/Enter control once again to set the value.

The units can also timeout (adjustable) to exit the menu. Once Pre-Set

Mode is entered crpc and fnpc will appear in the voltage display.

3-6 M370078-01

Navigating the Menu System

Normal Display Mode and Inactivity Timeout

Normal display mode appears on the output voltage and current displays when the configuration changes from the front panel have been completed or when the inactivity timeout occurs (default is 3 seconds). Normal display mode shows the output voltage and current values.

If a timeout occurs before the changes made to the value have been set, the changes will not be saved and you will have to re-enter the changes.

The inactivity timeout is variable from 1 to 20 seconds and can only be changed using the SCPI command.

The SCPI command (s) for these instructions are:

[:]SYSTem[<channel>]:FPANel[:TIMeout]

Important:

Each user memory setting location stores the timeout so that beginning users and expert users don't have to use the same timeout

3

Figure 3-2 Front Panel

M370078-01 3-7

Local Operation

Figure 3-3 Front Panel Menu System

3-8 M370078-01

Display Messages on the Front Panel

Display Messages on the Front Panel

The front panel displays on the power supply will use text as shown in

Table 3-2 to indicate the status or mode.

Table 3-2 Front Panel Display Text

Display Text

F0LD

FAIL

FAn

FLA

FnpC

FnPU

AS

AvAS

CAPr

CLr

CC

CU

CrPC

CrPU

0

232

485

8888

|

AC

ADDr

ANPR

CUrr deLa done

Err

FLd

HBP5

6PIB

In

LAn

LE C

Text Description

Negative Polarity

RS 232

RS 485

All segments On, Power Up

Positive Polarity

Alternating Current

RS 485 Address

Analog Programming

Power On Autostart

Auxiliary Autostart

Current Analog Programming

Clear

Constant Current

Constant Voltage

Coarse Current Pre-set Mode

Coarse Voltage Pre-set Mode

Current

Fold Delay

Done

Error (debug)

Foldback

Fail

Fan

Flash

Fine Current Preset Mode

Fine Voltage Preset Mode

Foldback

Data rate (kbps)

GPIB Interface

Interlock

ENET Interface

Current APG Level

M370078-01 3-9

3

Local Operation

Table 3-2 Front Panel Display Text

Display Text

On

OUPC

POL

Pr0

PSU

R IS rCL rE

LE U

Loc

LOCL

OFF

OCP

O7P

OUP

OvPF rnIS

SAUE

Sd

SLA

U IS

UN IS

USb

UUP

UvPF

UAPr

UOL

Text Description

Voltage APG Level

Lock

Local

Off

Over Current Protection



Over Voltage Protection fine adjustment

On

OVP Calibration

Polarity

Protection mode

Power Supply Unit

Isolated Resistive Analog Programming

Recall Preset

Remote Programming/Interface

Non-Isolated Resistive Analog Programming

Save Preset

Shutdown

Slave Remote Interface

Isolated Analog Voltage Programming

Non-Isolated Analog Voltage Programming

USB Interface

Under Voltage protection coarse adjustment

Under Voltage protection fine adjustment

Voltage Analog Programming

Voltage

A blinking numeric value is either a voltage or current set point in tracking mode. The display in which the set point appears, output voltage or output current display, indicates the type of set point, voltage or current.

3-10 M370078-01

Standard Operation

Standard Operation

The power supply can be controlled by two methods, either from the front panel or from any of the remote interfaces. Front panel control is referred to as local operation (default setting) while control via any of the remote interfaces is called remote operation. To set up the power supply for remote operation, see Chapter 5, “Remote Operation”. Once the remote connection has been established, the power supply can switch seamlessly between local operation and any digital interface (RS-232, RS-485,

GPIB, USB and Ethernet).

Local lockout is a feature that allows the front panel to be locked so that accidental button presses are ignored. This feature is often used to lock out the front panel while a user is controlling the power supply from a remote location.

The output of the power supply has two modes of operation: Constant

Voltage (CV) mode (see page 3–12) and Constant Current (CC) mode

(see page 3–12). Both of the operating modes are available regardless of

which control method (local or remote) is used.

Operating Modes

Output enabled

The output mode in which the power supply operates at any given time depends on the following factors:

• Output voltage set point V

SET

• Output current set point I

SET

• Impedance of the attached load R

L

The two output modes of operation are Constant Voltage (CV) mode (see

page 3–12) and Constant Current (CC) mode (see page 3–12).

When the output is turned on, both the voltage and current rise as quickly as possible to try and reach the set points (V

SET and I

SET) that were configured prior to enabling the output. Initially the unit will operate in

CV mode, which is the default mode. As the voltage and current rise to meet the requirements of the load, the set point that is reached first (based on the R

L, either V

SET or I

SET

) will determine which mode the power supply will remain in. The operating mode is indicated by either the CC mode LED or the CV mode LED, one of which will illuminate on the front panel.

Output disabled The mode of operation is not determined until the output is enabled. The

CV and CC mode LEDs will not indicate the mode while the output is disabled.

M370078-01 3-11

3

Local Operation

Constant Voltage Mode Operation

If the output is enabled and the configured current set point is much higher than the requirements for the attached load, then the voltage will rise until it reaches the voltage set point. When the output voltage reaches the voltage set point, it stops rising. The unit will continue to operate in

CV mode. The load current will still vary to meet any changes in required load current draw resulting from a change in the attached load.

Constant Current Mode Operation

If the output is enabled, the voltage and current start to rise. At this time the unit is operating in CV mode (default operational mode). As the load current drawn reaches the value of the output current setting, the unit will switch to CC mode and not allow any additional current to be drawn above the value of I

SET

. The unit is now operating in CC mode. The voltage will still vary to meet any changes in required output voltage resulting from a change in the attached load.

Automatic Mode Crossover

Mode crossover occurs when the unit makes the switch between operating modes. Crossover can occur from CV to CC or vice versa, depending on

how the attached load resistance changes. Figure 3-4 shows the

relationships between the variables.

For example, if the unit was initially operating in CV mode with the output voltage at the voltage set point and the load current below the I

SET and the attached load resistance began to decrease, the current would rise to meet this change in the load. The load current will increase in proportion to the decrease in the load resistance until the load current drawn reaches the current set point. At this point further decreases in load resistance (increased load current requirements) will cause the unit to cross over into CC mode where the output voltage will vary with changing load resistance and the load current will remain at the I

SET value.

The reverse operating mode change can also occur if the load resistance is increased to the point that the required load current drops below the I

SET value. At that point the power supply would crossover to CV mode and the load current would be free to vary as the load resistance changed.

3-12 M370078-01

Standard Operation

Figure 3-4 Operating Modes

To set

the

voltage

set point

(V

SET):

1. Turn the 9-position mode control to the VOLTS position or press the rotary Adjust/Enter control if the 9-position mode control is already at the VOLTS position.

The voltage set point is blinking in the output voltage display. The output current will be displayed in the output current display.

2. Set the desired voltage value using the rotary Adjust/Enter control.

Important:

If you can’t get the set point to the desired level, you may need to change the set points for OVP.

3. Press the rotary Adjust/Enter control to transition to Fine Adjust mode.

The set point will blink faster to indicate fine adjust tracking mode.

4. Set the desired voltage value using the rotary Adjust/Enter control.

5. Once the desired value has been set, press the rotary Adjust/Enter control to commit the setting.

M370078-01 3-13

3

Local Operation

Quick Tip

Remote operation uses these SCPI commands. See page 5–1.

Important:

The control circuits have been designed to allow you to set the output voltage up to 105% over the model-rated maximum value. The power supply will operate within these extended ranges, but full performance to specification is not guaranteed.


[[:]SOURce[<channel>]]:VOLTage[:LEVEl][:IMMediate]

[:AMPLitude]

Important:

The maximum and minimum setting values of the output voltage are limited by the Over Voltage Protection and Under Voltage Protection settings.

To set the current set point (I

SET

):

1. Turn the 9-position mode control to the AMPS position or press the rotary Adjust/Enter control if the 9-position mode control is already at the AMPS position.

The voltage set point is blinking in the output voltage display. The output current will be displayed in the output current display.

2. Set the desired current value using the rotary Adjust/Enter control.

3. Press the rotary Adjust/Enter control to transition to Fine Adjust mode.

The set point blinks faster to indicate fine adjust tracking mode.

4. Set the desired current value using the rotary Adjust/Enter control.


Important:

The control circuits have been designed so that output current can be set up to 105% over the model-rated maximum values. The power supply will operate within these extended ranges, but full performance to specification is not guaranteed.


[[:]SOURce[<channel>]]:CURRent[:LEVEl][:IMMediate]

[:AMPLitude]

3-14 M370078-01

Enabling the Output

Shipped Configuration (Local Operation)

The power supply is configured for local operation at the factory. See

Table 3-3 for a summary of this configuration. For more information on

default settings, see Table 3-9 on page 3–39.

Table 3-3 Shipped Configuration

Local Control Configuration

Use the front panel controls to adjust the output voltage and current set point settings.

The OVP set point is adjusted at the front panel to 105% above the maximum rated output voltage.

Additional References

See Chapter 3, “Local Operation” for front

panel operation. See Chapter 4, “Analog

Programming (APG) and Isolated Analog

Programming (ISOL)” for analog programming procedures.

See “Using Over Voltage Protection

(OVP)” on page 3–25 for the adjustment

procedure.

Enabling the Output

Enabling the output on will also turn off the ALARM LED if the ALARM

LED has been latched on due to an alarm triggering and automatically

clearing. See “Alarms and Errors” on page 3–18.

To enable the output power:

◆ Press the OUTPUT ENABLE Main button on the front panel or enter the SCPI command.

The OUTPUT ENABLE Main button will illuminate.

To disable the output power:

◆ Press the OUTPUT ENABLE Main button when the OUTPUT

ENABLE Main button is illuminated.

The output will be disabled and the LEDs will not be illuminated.

Quick Tip Remote

Operation uses these commands.

See page 5–1.

Important:

The main output will not turn on if the shutdown function is

activated. See “Using the External Shutdown Function” on page 3–30.


[:]OUTPut[<channel>][:POWer][:STATe]

3

M370078-01 3-15

Local Operation

Enabling the Auxiliary Output

To enable on the auxiliary output:

◆ Press the OUTPUT ENABLE Aux button on the front panel.

The OUTPUT ENABLE Aux button will illuminate.

Important:

The auxiliary output will not be enabled if the external

AUX_ON_OFF signal line is being used to disable the auxiliary outputs.

See “AUX Output and Isolated Analog Programming (ISOL) Connector” on page 4–20.

To disable the auxiliary output:

◆ Press the OUTPUT ENABLE Aux button on the front panel again.

The OUTPUT ENABLE Aux button will not be illuminated.

If the auxiliary output is activated, +5 V on J3.9 (+AUX1) and +15 V on

J3.11 (AUX2) will be present with respect to Pin J3.2 or Pin J3.6

(COM_ISOLATED). (See also “AUX Output and Isolated Analog

Programming (ISOL) Connector” on page 4–20 for more details.)


[:]OUTPut[<channel>]:AUXiliary[:STATe]

Output Auto Start Mode (Auto Restart)

The Auto Start mode establishes the state of the output of the power supply after recovery from a complete power cycle (all front panel LEDs are not illuminated).

If Auto Start mode is set to On, the power supply output will return to its previous value when the power supply is powered up again.

If Auto Start mode is set to Off, the power supply output will remain off after the power supply is powered up again.

To change the Auto Start mode:

1. Press and hold the OUTPUT ENABLE Main button for 1 second.

AS On or AS Off is displayed.

2. Switch the Auto Start mode.


[:]OUTPut[<channel>][:POWer][:STATe]:PowerON[:STATe]

3-16 M370078-01

Auxiliary Auto Start Mode

Auxiliary Auto Start Mode

The Auxiliary Auto Start mode determines the state of the auxiliary output after a complete power cycle (all front panel LEDS are not illuminated). With Auxiliary Auto Start mode turned to On, the auxiliary output will be activated after the power supply is powered up again.

To define the Auxiliary Auto Start mode:

1. Press and hold the OUTPUT ENABLE Aux button for 1 second.

AuAS On or AuAS Off is displayed.

2. To change to status to On or Off, press the OUTPUT ENABLE Aux button.


[:]OUTPut[<channel>]:AUXiliary:PowerON[:STATe]

3

M370078-01 3-17

Local Operation

Alarms and Errors

Several conditions can cause alarms in the XG. Some conditions are:

• From user configurable features.

• Controlled in hardware and will trigger regardless of configuration.

All alarms, with the exception of the Fan alarm, will result in the output of the power supply being disabled. The Fan alarm does not affect the output.

When an alarm is triggered, the appropriate alarm message will begin blinking on the display and the Alarm LED will be illuminated.It is possible that more than one alarm will trigger at the same time. When this occurs, the alarm with the highest precedence will blink on the display.

Table 3-4 lists the precedence of alarms. If the alarm is cleared and the

event which caused the alarm has not been corrected, then the alarm may trigger again immediately. Fix the reason for the alarm before you clear it.

Table 3-4 Alarm Order of Precedence

Alarm Precedence Output

Latch

1 (Highest) Yes

Maskable Display

AC Fail

Over Temperature Protection (OTP)

Fan

Interlock

Over Voltage Protection (OVP)

Over Current Protection (OCP)

Foldback

External Shutdown

Under Voltage Protection (UVP)

2

4

6

7

8

9

10

Yes

No

No

Always

Always

Yes

No

11 (Lowest) No

No

Yes

Yes

No

No

No

Yes

Yes

Yes

AC Fail

O7P Pro

FAn Pro

In Loc

OVP Pro

OCP pro

FLD Pro

SD POL

UUP Pro

FLA FAIL

Flash Checksum Failure

1 N/A N/A N/A

1.The Flash Checksum Failure alarms are an exception as they are a terminal alarm that can only occur during boot up. It can only be cleared by doing a soft reset (losing the configuration of the unit) or by power cycling the unit.

3-18 M370078-01

Alarms and Errors

Clearing Alarms

Clearing Triggered and Manual Alarms

To clear a triggered alarm, use one of the following methods:

• Turn the power supply Off and then On.

• Press and hold the rotary Adjust/Enter control for 3 seconds.

• Press the reset key combination (Flash Fail ONLY). See “Resetting the

Power Supply” on page 3–39.

To clear a manual alarm:

1. Press and hold the rotary Adjust/Enter control for 3 seconds.

The ALr CLr message will be displayed on the front panel for a few seconds.

Important:

When an alarm is cleared by using this method, only the current highest precedence alarm is cleared. If another alarm has occurred, then this alarm will now become the highest precedence alarm and will begin blinking on the display.

2. Repeat the alarm clearing until you have cleared all alarms.

Clearing a Flash Failure Alarm

The Flash Failure alarm is the only exception for clearing alarms. Flash

failure can only be cleared by a reset (see “Resetting the Power Supply” on page 3–39) or by power cycling the unit.

To clear a triggered alarm, use one of the following methods:

• Turn the power supply Off and then On.

• Press and hold the rotary Adjust/Enter control for 3 seconds.

•

Press the reset key combination (Flash Fail ONLY). See “Resetting the Power Supply” on page 3–39.


[:]OUTPut[<channel>]:PROTection:CLEar

3

M370078-01 3-19

Local Operation

Clearing Automatic Alarms

Some alarms will clear automatically when the condition that caused the alarm is no longer present. When an alarm automatically clears, the output voltage and current displays will return to normal, but the ALARM

LED will remain illuminated to indicate that an alarm has occurred. If an automatic alarm is triggered, the normal alarm clearing procedure still applies.

To clear the ALARM LED after an automatic alarm has cleared, use one of the following methods:

• Send the SCPI Clear Alarm command.

• Press the OUTPUT ENABLE Main button to reenable the output.

The ALARM LED will no longer be illuminated.

For example, if one of the fans in the XG was temporarily blocked, causing a Fan alarm, then the blockage was cleared and the fans restarted, the alarm would clear. The output voltage and current displays would be

in normal mode, but the ALARM LED would be illuminated. See “Front

Panel ALARM LED” on page 3–20 for information on other events that

affect the ALARM LED.

Alarms status is tracked in the SCPI status registers. For more details on how and where the alarms are tracked, see “Standard SCPI Register

Structure” on page 5–34 .

Front Panel ALARM LED

The Alarm LED will illuminate due to one or more of the following events occurring:

• OTP has been tripped.

• A fan has stopped.

• OVP has tripped.

• OCP has tripped.

• UVP has tripped

• Interlock is open circuit.

• AC power falls out of range.

• Foldback has tripped.

• Persistent storage checksum is wrong (Flash Fail alarm).

• Internal malfunction of power supply.

• Any alarm has tripped and been cleared automatically.

The alarm LED will remain illuminated until the alarm is manually

cleared (see “Clearing Triggered and Manual Alarms” on page 3–19) or

by turning the main output on if the alarm has automatically been cleared.

3-20 M370078-01

Alarms and Errors

Alarm Masking

It is possible to completely disable some alarms through the use of the alarm mask. If an alarm is masked then this masking will prevent it from registering in the SCPI conditions registers as well as not triggering the

alarm. The alarms that can be masked are identified in Table 3-4 on page 3–18. Setting the bit position (1) of an alarm will result in the alarm

being enabled. Clearing the bit position (0) of an alarm will result in the alarm being masked/disabled.

For Example:

If you wanted to enable the OTP, Foldback and UVP alarms you would take the OTP value of 2 and add it to the foldback value of 256 and the UVP value of 1024 to get a mask of 1282. This is the value you would send with the SCPI command.

Control of the alarm mask is only available using the SCPI command.


[:]SYSTem[<channel>]:PROTection:MASK

The mask command takes a single parameter made up of the sum of the

values for the alarms that are to be masked. See Table 3-5 for the alarm

values associated with each maskable alarm.

Table 3-5 Alarm Mask Bit Positions

Alarm


Fan

Foldback

External Shutdown


Bit Position

1

3

8

9

10

Value

2

8

256

512

1024


[:]SYSTem[<channel>]:PROTection:MASK

3

M370078-01 3-21

Local Operation

Alarm Output Latching

When an alarm is triggered, the output will be disabled with the exception of the Fan alarm. When an alarm is cleared, the alarm output latch determines if the output should be re-enabled to the state before the alarm occurred or if the output should remain in the off state.

Where setting the bit position (1) of an alarm latch will result in output latching to the off state when the alarm is cleared and if cleared (0) output will be re-enabled to the state before the alarm triggered.

To define the values for the bit position you determine which alarms you

want to latch. Read the value for this bit position from Table 3-6 and sum

them together. The result is the alarm last mask. Which you should send with the SCPI command.

For Example:

If you wanted to enable latching for OTP and Foldback you would take the OTP value of 2 and add it to the foldback value of 256 to get a mask of 258. This is the value you would send with the SCPI command.

The output latches are accessible through the SCPI command.


[:]SYSTem[<channel>]:PROTection:LATCh

The latch command take a single decimal parameter made up of the sum of the values for the alarms to determine if they are to be latched in the off

state on clearing. See Table 3-6 for the values associated with each

latchable alarm.

Table 3-6 Alarm Latch Bit Positions

Alarm

AC Fail


Foldback

0

1

8

Bit

Position Value

1

2

256

3-22 M370078-01

Setting Foldback Mode

Setting Foldback Mode

Foldback mode is used to disable the output when a transition is made between the operating modes. The power supply will turn off/disable the output and lock in foldback mode after a specified delay if the power supply transitions into CV mode or into CC mode, depending on the foldback mode settings. This feature is particularly useful for protecting current or voltage sensitive loads. Foldback can be set to trigger a switch when transitioning from CV to CC mode or from CC to CV mode.

To set the foldback protection and foldback delay time:

1. Turn the 9-position mode control to the FLD position or press the rotary Adjust/Enter control if the 9-position mode control is already at the FLD position.

2. Select the type of crossover that will cause foldback to trigger by using the rotary Adjust/Enter control.

If the mode selected is CC or CV mode, the foldback delay timer will start on a transition into the selected mode. If the mode selected is none, foldback is not enabled.

3. Press the rotary Adjust/Enter control when the desired mode has been selected.

The FLD LED will illuminate and DELA will be displayed in the output voltage display.

4. Adjust the desired delay time using the rotary Adjust/Enter control.

The range can be set from 0.50 seconds to a maximum of 50 seconds.

The step size is in increments of 0.05 seconds when setting from 0.50 to 5 seconds and then in 1 second increments from 5 seconds to 50 seconds.

5. Once the desired foldback delay time has been selected, press the rotary Adjust/Enter control to commit the foldback delay setting.

To disable foldback protection:

1. Turn the 9-position mode control to the FLD position or press the rotary Adjust/Enter control if the control knob is already at the FLD position.

2. FLd is displayed on the output voltage display and the output current display shows the current foldback trigger mode.

3. Turn the rotary Adjust/Enter control until nonE is displayed in the output current display.

M370078-01 3-23

3

Local Operation

4. Press the rotary Adjust/Enter control to commit the setting once the desired value has been set.

5. The green FLD LED will turn off and the display will return to the normal display mode.


[:]OUTPut[<channel>]:PROTection:FOLDback[:MODE]

[:]OUTPut[<channel>]:PROTection:FOLDback:LATCh

Important:

If you set foldback while the output is enabled and the trigger you select is the same as the current operating mode, the foldback timer will begin counting immediately after the delay time has been set.

Resetting Activated Foldback Protection

To reset activated and latched foldback protection, press and hold the rotary Adjust/Enter control for approximately 3 seconds.



3-24 M370078-01

Using Over Voltage Protection (OVP)

Using Over Voltage Protection (OVP)

The OVP circuit protects the load in the event of an analog programming error, an incorrect voltage control adjustment, or a power supply failure.

The OVP circuit monitors the output voltage at the output of the power supply and will disable the output whenever a preset voltage set point is exceeded. You can set the preset voltage trip point by using the 9-position mode control on the front panel or via one of the remote programming interfaces.

To prevent accidental tripping of the OVP while setting up, the firmware will prevent the OVP set point from being less that 105% of the voltage set point when in local set point control mode. When the XG is in VAP mode for defining voltage set point the set point limitation will be based on the VAP input signal level. The user should note it is possible to trip

OVP in this mode if the OVP is configured when the analog programming source is off.

When the user attempts to configure an OVP setpoint that is less than

105% of the voltage set point via the front panel the set point will stop allowing the value to decrement. If the user attempts to configure an OVP set point that is less than 105% of the voltage set point via SCPI a -221,

"settings conflict error" will be pushed onto the error queue.

3

M370078-01 3-25

Local Operation

Defining the OVP Set Point

To define the OVP set point:

1. Turn the power supply On.

Ensure the voltage is lower than the desired set point.

2. Set the output to the desired voltage.

OVP can be set without setting desired output voltage first.

3. Turn the 9-position mode control to the PRT position.

Pro OUP is displayed.

4. Press the rotary Adjust/Enter control.

5. Turn the rotary Adjust/Enter control to set the upper limit protection.

See “Coarse and Fine Adjustment Modes” on page 3–3.

Important:

The OVP range is variable from V

SET

+5% to V

MAX

+25%.



[[:]SOURce[<channel>]]:VOLTage:PROTection[:OVERvoltage]

[:LEVel]

If the output is between OVP set

and –5%, an OVP warning message is possible when in APG mode.

3-26 M370078-01

Using Under Voltage Protection (UVP)

Using Under Voltage Protection (UVP)

Important:

UVP will not be active for voltage set points that are less than 1% of model voltage.

The UVP prevents voltage settings below a set value. The UVP lets you create a voltage window of operation when used in conjunction with the

OVP setting. The UVP range is variable from 0 V to OVP

SET

–10%.

The UVP is a protection that becomes active after the output is enabled and a period of time has passed to allow the output to reach its set point value before the UVP protection begins monitoring. As with OVP if the voltage set point is determined by analog control (VAP) and the voltage strays to within 5% of the UVP set point then UVP Safe will trigger to warn the user that they are about to trigger the UVP alarm.

The period of time before the UVP monitoring is active after the output is enabled is determined by the rise-time delay for the model as listed in

Table C-2, “Remote Operation” on page C–4 on the row called Up-prog

Response Time, 0 - Vmax. Since the rise time is based on a purely resistive load the user should be aware that UVP triggering might be possible in capacitive or rectifier loads due to the rise time being longer.

In these cases it is recommended that the user mask the UVP alarm until the rise time has elapsed and then unmask the alarm to allow UVP protection to be enabled during operation.

3

M370078-01 3-27

Local Operation

Defining the UVP Set Point

To define the UVP set point:


2. Set the output to the desired voltage.


PRo OUP is displayed.

4. Turn the rotary Adjust/Enter control until PRo UUP is displayed.

5. Press the rotary Adjust/Enter control to select the UVP for setting up.

6. Set up the lower limit protection using the rotary Adjust/Enter control.

Important:

The UVP range is variable from 0 volts to OVP

SET

–10%.


See “Coarse and Fine Adjustment Modes” on page 3–3.


[[:]SOURce[<channel>]]:VOLTage:PROTection:UNDer[:LEVel]

Over Current Protection (OCP)

The OCP alarm is a firmware alarm that is only configurable using the

SCPI interface. The OCP triggers if the output current exceeds the OCP set point. Because the OCP alarm is a firmware based alarm it has a latency before detection of the condition can occur. The user should be aware of this latency and take this into consideration when relying on

OCP to protect a sensitive load. The maximum period for detecting an

OCP condition is 300 ms.

OCP is fixed at 110% of rated current.

3-28 M370078-01

Using Over Temperature Protection Lock (OTP)

Using Over Temperature Protection Lock (OTP)

The OTP lock protects the power supply in the event of an over temperature alarm. This alarm could be caused by ventilation restriction or overheating due to fan failure.

Two modes are available:

• Auto recovery (OTP OFF) where the power supply turns on again after cooling down.

• Latch mode (OTP ON) where you will need to reset the unit by turning the front panel power switch to Off and then On again.

If the OTP is activated, the main output will turn off and PRO O7P (over temperature protection) will blink on the display. The OTP alarm is an alarm that will auto recover when the temperature falls back into normal bounds.

Defining the OTP Mode

To define the OTP lock:


PrO OUP is displayed.

2. Turn the rotary Adjust/Enter control until PRO O7P is displayed.

3. Press the rotary Adjust/Enter control to display O7P ON or OFF.

4. Turn the rotary Adjust/Enter control to change to On or Off.



[:]SYSTem[<channel(s)>]:PROTection:LATCh

Resetting in Latch Mode

To reset the power supply if the OTP alarm is tripped and the OTP mode is set to On (latching enabled), press and hold the rotary Adjust/Enter control for approximately 3 seconds.


[:]OUTPut[<channel(s)>]:PROTection:CLEar


3

M370078-01 3-29

Local Operation

Using the External Shutdown Function

Use the external shutdown function to enable or disable the output of the power supply via a logic level signal. When the external shutdown is triggered, the power supply will display SD POL on the output voltage and current displays and the ALARM LED will illuminate. The external shutdown is useful for making adjustments to either the load or the power supply without shutting off the power supply or for using the power supply as part of a larger test system in which digital or analog control is required.

Activating the External Shutdown Function

To activate the external shutdown function, use the AUX output supply provided on the Analog Programming Connector J3. This input has a user selectable polarity with logic low input from 0.0V to 1.2V and logic high from 2.0V to 15V. The control signal for this input must be capable of sinking 10mA minimum. This input is also compatible with the use of dry contacts, where a short is logic low and an open is logic high. The input lines of the shutdown circuit are fully optically isolated. See page C–4 for specifications.

Once the External Shutdown has been triggered, the display will blink the

SD POL and the ALARM LED will be illuminated.

Controlling the External Shutdown Function

The external shutdown circuit accepts a voltage or dry contact control

(high or low logic level) to enable or disable the power supply output.

Make connections for the signals at the AUX Output and Isolated Analog

Programming Connector on the rear panel. (See “AUX Output and

Isolated Analog Programming (ISOL) Connector” on page 4–20 for more information.)

To activate the shutdown function:

◆ Connect the control signal source to the Shutdown pin (J3.12) on the

Aux Output and Isolated Analog Programming Connector with the control circuit ground connected to Isolated Ground pin (J3.6).

The External Shutdown pin is pulled high internally (normally high).

Therefore, if this feature is not used, the polarity should be set to 1 to

avoid false triggering. (See “Defining the Polarity of the External

Shutdown Signal” on page 3–31 for instructions.)

3-30 M370078-01

Using the External Shutdown Function

Defining the Polarity of the External Shutdown Signal

1. Turn the 9-position mode control to the PRT position or press the rotary Adjust/Enter control if the control knob is already at the PRT position.

PrO OUP is displayed on the output voltage display.

2. Turn the rotary Adjust/Enter control until PrO SD is displayed.

3. Press the rotary Adjust/Enter control to display SD 0 (shutdown on logic 0) or SD1 (shutdown on logic 1).

4. Press the rotary Adjust/Enter control to commit the desired polarity setting.

For example: If you set the shutdown logic to 1 (SD1) and apply a logic high (greater than 1.2 Vdc) to pin J3.12 relative to pin J3.6 on the ISOL connector, the power supply will shut down. Conversely, if you set the shutdown logic to 0 (SD0), the power supply will only operate when you have a logic high (greater than 1.2 Vdc) to pin J3.2 relative to pin J3.6.

Important:

There is an internal pullup resistor inside the shutdown circuit so the shutdown polarity should be set to 0 if it is not being used.


[:]OUTPut[<channel>]:POLarity

3

M370078-01 3-31

Local Operation

Interlock Function

The Interlock function can be used to wire an external shutoff switch that can be used to enable or disable the power supply output. When the switch is closed the power supply will operate normally. If the switch is opened, the power supply will trigger the interlock alarm. The output will be disabled, the display will blink In Loc, and the ALARM LED will illuminate. This alarm will automatically clear when the switch closes again and the output will automatically be restored to its pre-alarm state

(either enabled or disabled). The interlock function can be enabled or disabled using a SCPI command. Common applications include an emergency shutoff switch or a door switch.

Connect the switch between pins J3.14 and J3.15 on the AUX Output and

Isolated Analog Programming Connector.

Defining the Interlock Mode

The Interlock mode is controlled via SCPI commands. There is no front panel access for enabling or disabling the Interlock functionality. See

“Interlock Enable/Disable” on page 5–68.

The SCPI command for setting the Interlock mode to On and Off is:

[:]SENSe[<channel>]:PROTection:INTerlock[:STATe]

3-32 M370078-01

Hardware Malfunction Alarms

Power On Status Signal

Power On Status signal indicates a fault condition in the power supply.

Power On Status signal is a TTL output signal at Pin J2.13 with reference to COM_ISOLATED (Pin J2.2 or Pin J2.6).

During normal operation, the Power On Status signal will be high. If the output is disabled for any reason, the Power On Status signal will go low.

The following conditions will set the Power On Status to a low level:

• AC fail

• Over Voltage protection (OVP)

• Under Voltage Protection (UVP)

• Over Current Protection (OCP)

• Over Temperature protection (OTP)

• Foldback protection

• Interlock

• Output Off

• Shutdown activated (rear panel shutdown).

• Internal hardware malfunction

• Fan failure

Hardware Malfunction Alarms

The power supply will turn off the output. An error message will be displayed in the event that:

• OVP trips

• Voltage deviation in CV mode reaches more than ±5% from the set level.

1

• Current deviation in CC mode reaches more than ±5% from the set level.

1

3

M370078-01

1.These two forms of hardware malfunction are only monitored in the corresponding APG mode.

3-33

Local Operation

Current Configuration Memory Settings

The power supply will save the unit settings at the time of power down.

These settings will be loaded when the power is restored to the unit or the

power supply is powered up again. Table 3-7 lists the settings that are

saved and recalled on a power cycle event.

Table 3-7 Power Cycle Saved/Recalled Settings

Voltage Setpoint

Current Setpoint




Autostart OUTPUT ENABLE Main

Autostart OUTPUT ENABLE Aux

Foldback Mode

Foldback Delay

Shutdown Logic

Voltage Analog Programming (VAP) Mode

Voltage Analog Programming (VAP) Level

Current Analog Programming (CAP) Mode

Current Analog Programming (CAP) Level

Remote Programming Interface

Local Lock

PSU (Power Supply) Address

Data Rate (BPS)

Alarm Latches

Front Panel Timeout

3-34 M370078-01

User Setting Memory Locations

User Setting Memory Locations

There are three user setting memory locations available for storing frequently used configurations. These user setting memory locations help to facilitate multiple users of an XG power supply who have different setups or when multiple loads are used that have different requirements.

Table 3-8 lists the values that are stored in each user setting memory

location.

Table 3-8 User Accessible Saved/Recalled Settings

Voltage Setpoint

Current Setpoint



Autostart OUTPUT ENABLE Main

Autostart OUTPUT ENABLE Aux

Foldback Mode

Foldback Delay

Shutdown Logic

Voltage Analog Programming (VAP) Mode

Voltage Analog Programming (VAP) Level

Current Analog Programming (CAP) Mode

Current Analog Programming (CAP) Level

Alarm Latches

Front Panel Timeout

Saving User Setting Memory Locations

To save user setting memory locations:

1. Turn the 9-position mode control to the SAV position.

SAUE is displayed on the output voltage display with a number indicating a preset position which is displayed on the output current display.

2. Turn the rotary Adjust/Enter control to select a preset position from 1 to 3.


SAuE done is displayed on the output voltage display.

M370078-01 3-35

3

Local Operation

4. The setting has now been saved to the selected user setting memory location.


*SAV or

[:]SYSTem[<channel>]:SAVE

Recalling User Setting Memory Locations

This feature recalls settings that were previously saved.

To load user setting memory locations:

1. Turn the 9-position mode control to the RCL position.

RCL is displayed on the output voltage display with a number indicating a preset position on the output current display.

2. Turn the rotary Adjust/Enter control to select a preset position from 1 to 3.


rCL done is displayed on the output voltage display.

The settings in the selected user setting memory locations have now been applied to the power supply.


*RCL or

[:]SYSTem[<channel>]:RECall

Three user setting memory locations are available and one user setting memory location is saved automatically before AC power shutdown. This user setting memory location will be loaded after AC power is restored.

3-36 M370078-01

Local Lockout

Local Lockout

Local lockout is a feature that allows the front panel to be locked so that accidental button presses are ignored. This feature is often used to lockout the front panel when you are controlling the power supply from a remote location. When in local lockout mode, the front panel will display LOCL

Loc whenever a button is pressed or a knob is turned.

Enabling Local Lockout

To enable local lockout:

1. Turn the 9-position mode control to the PGM position or press the rotary Adjust/Enter control if the control knob is already at the PGM position.

The display will show rE in the output voltage display and the selected remote interface in the output current display.

2. Turn the rotary Adjust/Enter control until the display shows LOCL

Loc.


4. Turn the rotary Adjust/Enter control until the display shows LOCL On.


Local lockout has been enabled.


[:]SYSTem:REMote:STATe

Disabling Local Lockout

To disable local lockout:

1. Turn the 9-position mode control to the PGM position or press the rotary Adjust/Enter control if the control knob is already at the PGM position.

The display will show rE in the output voltage display and the selected remote interface in the output current display.

2. Turn the rotary Adjust/Enter control until the display shows LOCL

Off.


Local lockout has been disabled.

3

M370078-01 3-37

Local Operation


[:]SYSTem[<channel(s)>]:REMote:STATe

3-38 M370078-01

Resetting the Power Supply

Resetting the Power Supply

Soft Reset

The reset is used to clear the parameters to the factory default values.

The soft reset is used to set the parameters (see Table 3-9) to the default

values, but it does not reset the calibration constants

To perform a soft reset:

1. Turn the power supply to Off then On.

When the unit is powering on, 8888 8888 is displayed on the output voltage and current displays.

2. Press the key combination of both OUTPUT ENABLE Main button and OUTPUT ENABLE Aux button and hold continuously for 3 seconds in order to execute.

If the flash fail alarm triggers, it is also possible to reset the power supply.

3. Once a reset has been triggered, the output voltage display shows P5U

CLr for 1 second.

The model number will be displayed for 1 second and then return to normal mode.

After executing a reset, the power supply’s settings are restored to the

default settings but retain the calibration data. Table 3-9 lists the default

settings.

Table 3-9 Power Supply Default Settings

Parameter

Address

Data rate (Kbps)

Communication mode

Vout setting

Iout setting

Output

AUX Out

Trigger

Ext. On/Off Polarity

Auto start mode

AUX Auto start mode

OVP

Setting

0 A

Off

Off

Off

1

9.6

RS-232

0 V

Negative

Off

Off

Maximum

3

M370078-01 3-39

Local Operation

Hard Reset

Table 3-9 Power Supply Default Settings

Parameter Setting

UVP

Foldback trigger

Foldback delay

Current Share Mode

Alarm Output Latches

Alarms Mask

Interlock

Voltage Analog Programming

Voltage APG Scale

Current Analog Programming

Current APG Scale

0 V

None

0.5 s

MASTer

263 (0 × 107, all latches enabled)

2047 (0 × 7FF, all enabled)

Disabled

Off

10 V

Off

10 V

The hard reset performs the same functions as a soft reset, but will also clear all calibration constants. Do not perform a hard reset unless you are planning to re-calibrate all settings of your power supply.

To reset the power supply:


2. Allow the unit to power down.

3. When the fans are off and the front panel displays are not illuminated, turn the power switch to the On position.

4. Press and hold the OUTPUT ENABLE Main and OUTPUT

ENABLE Aux buttons.

The front panel should display P5U S rS.

5. When the display reads P5u Clr, release the OUTPUT ENABLE

Main and OUTPUT ENABLE Aux buttons. After 1 second the model number will appear on the display for 1 second.

The power supply has been reset.

3-40 M370078-01

Using Multiple Power Supplies

Using Multiple Power Supplies


There is a shock hazard at the load when using a power supply at an output of greater than 40V or a combined output of greater than 40V. To protect personnel against accidental contact with hazardous voltages created by a series connection, ensure that the load, including connections, has no live parts which are accessible. Also ensure that the insulation rating of the load wiring and circuitry is greater than or equal to the maximum or combined output voltage of the power supply.


Do not connect power supplies from different manufacturers in parallel or in series.


The remote programming inputs are internally referenced to the power supply's negative output. Do not connect remote programming ground lines to the power supply's positive output.

You can operate power supplies of the same model with the outputs in series to obtain increased load voltage or with the outputs in parallel to obtain increased current, also called current sharing. Split supply operation gives you two positive outputs, or a positive and a negative

output. See Figure 3-5 on page 3–42. When using multiple supplies in

series or parallel, they will not meet the single unit specifications in this

Manual.

3

M370078-01 3-41

Local Operation

Power Supply

Power Supply

Figure 3-5 Split Supply Operation

V

Common

Load

V

3-42 M370078-01


Configuring Multiple Supplies for Series Operation

A maximum of two power supplies of the same rating can be connected in series to increase the output voltage.


When two power supplies are connected in series, they should be programmed to the same output voltage to prevent damage to the lower voltage supply at short circuit condition.

Connecting to the Load in Local Sensing Mode

Connect the negative (–) output terminal of one power supply to the

positive (+) output terminal of the next power supply. See Figure 3-6 for a

representation of series operation.

3

J1.2

+LS

J1.1

+S

J1.5

-LS

+

Power Supply

–

J1.6

-S

+

–

LOAD

J1.2

+LS

J1.1

+S

+

Power Supply

–

J1.5

-LS

J1.6

-S

Figure 3-6 Series Operation

M370078-01 3-43

Local Operation

Connecting to the Load in Remote Sensing Mode

Connect the negative (–) output terminal of one power supply to the positive (+) output terminal of the next power supply. The more positive supply’s positive sense line should connect to the positive terminal of the load (or distribution point). Its return sense line should connect to the connection between the two units at the same spot as the negative supply’s positive sense line. The return sense line of the negative supply should be

connected to the return of the load. See Figure 3-7.


Do not connect sense lines through relays.

3-44

Figure 3-7 Load Connections in Remote Sensing Mode

M370078-01


Configuring Multiple Supplies for Current Sharing Operation (APG

Method)

Up to four power supplies can be connected in parallel to increase the output current. One of the units will operate as the master unit and the remaining units will operate as slave units controlled by the master unit.

The master unit uses the analog programming lines to set the output voltages and currents of the slave units to match its output.

In remote digital operation, only the master unit can be programmed remotely while the slave units that are connected remotely will only provide voltage, current and status readback information.

In APG current sharing topologies, only the master unit can be programmed using any of the input methods (front panel, remote digital, or analog programming control). The slave unit(s) voltage and current output(s) are determined by the master unit through the REF_I input to each slave unit. The readback using any of the monitoring methods (front panel display, user monitor lines or SCPI measure commands) of each unit (master or slave) will provide individual unit status, not system status.

Setting up the Master Unit

Set the output voltage of the master unit to the desired voltage. Program the current set point of the master unit to the desired load current set point divided by the number of parallel units. During operation, the master unit operates in Constant Voltage mode, regulating the load voltage at the programmed output voltage. Send the Current share command.


[[:]SOURce[<channel>]]:COMBine:CSHare[:MODE]

Setting up the Slave Units

The output voltage and current of the slave units should be programmed to maximum value. During parallel operation, the slave units operate as a controlled current source following the master unit’s output current.

All slave units must be configured with the SCPI command to enable current sharing.


[[:]SOURce[<channel>]]:COMBine:CSHare[:MODE]

3

M370078-01 3-45

Local Operation

Important:

The slave unit discussed here is not the same as the remote interface slave described in chapter 5.

Setting Over Voltage Protection (OVP)

The master unit’s OVP should be programmed to the desired OVP level.

The OVP of the slave units should be programmed to a higher value than the master OVP. When the master unit shuts down, it will program the outputs of the slave units to zero volts. If a slave unit shuts down, only that unit would shut down and the remaining slave units would supply all the load current if possible.

Setting Foldback Protection

Foldback protection is only available on the master units as the slaves operate in constant current mode. They should never crossover into constant voltage mode. If foldback is triggered on the master unit, when its output shuts down, it will program the slave unit’s output to zero volts.

3-46 M370078-01


Connecting to the Load in Local Sensing Mode (Parallel Control

Method)

Connect the power supplies in parallel to obtain a single output supply with a higher output current set point. Set all of the outputs to the same voltage before connecting the positive (+) and negative (–) terminals in parallel. The total current available is the sum of the maximum currents of each power supply.

3

Figure 3-8 Load Connections in Local Sensing Mode

M370078-01 3-47

Connecting to the Load in Remote Sensing Mode (Parallel Control

Method)

Figure 3-9 Load Connections in Remote Sensing Mode (Parallel Control Method)

3-48

4

Analog

Programming (APG) and Isolated Analog

Programming (ISOL)

Chapter 4, Analog Programming (APG) and Isolated

Analog Programming (ISOL), provides information and procedures for analog and isolated analog programming of the power supply.

Analog Programming (APG) and Isolated Analog Programming (ISOL)

Introduction

The rear panel connectors J1 and J3 provide an option to control and monitor the output of the power supply with analog signals. Connector J1 provides a non-isolated analog interface where all signals are referenced to the negative output terminal of the power supply. Connector J3 is an isolated interface and also provides an isolated auxiliary voltage output to aid analog programming.

Analog Programming (APG) of Output Voltage and Output Current

Analog programming allows control of the power supply’s output voltage, output current or both to be controlled from analog input sources.

As the programming source is varied within the configured analog programming range (2–10 volts/ k

Ω

max), the power supply’s output varies proportionally over its output range. For example, if you set the programming scale to 10 V voltage source and apply 5 V to the programming pins, the power supply will be programmed to 50% of the output capability for your power supply.

While analog programming mode is configured, you will not be able to make adjustments to the set points from the front panel or through the remote interfaces.

The front panel will display AnPr in the output current display when the

9-position mode control is turned to VOLTS or AMPS positions for the parameter(s) that are configured to be controlled by analog programming.

If an adjustment of a parameter controlled by APG is attempted using a

SCPI command, a “-221 Settings Conflict” error will be pushed onto the error queue.

Using analog programming requires that you make connections to the

Isolated Analog Programming Connector or Analog Programming

Connector on the rear panel of the power supply. Depending on your model, see “Rear Panel Connectors” on page 1–6 or “” on page 1–7.

4-2 M370078-01

Introduction

Remote Programming Options

Analog Monitor Signals

There are four monitor lines for analog programming the pin name and the related APG mode, which are listed in Table 4-1. All of these lines are provided to give analog feedback. The output from these monitor lines is a value scaled to the Analog Programming level set for the corresponding analog programming type. For example, the voltage monitor and isolated voltage monitor lines are both scaled to the analog programming level that is set in the VAP mode.

Table 4-1 Monitor Lines

Related APG Mode Reference Line

Name

Non-Isolated Voltage Analog Programming VOL_MON

Isolated Voltage Analog Programming IS_MON_VOL

Non-Isolated Current Analog Programming CUR_MON

Isolated Current Analog Programming IS_MON_CUR

Connector

J1.13

J3.5

J1.14

J3.10

Important:

Analog control monitor lines will reflect the output of the power supply even when the unit is not set to operate in analog programming mode.

Important:

Isolated monitor lines are only valid when isolated analog programming modes are used for the respective voltage and current control. If local (front panel) control is used or non-isolated APG is used, these values will be inaccurate and should not be used for monitoring. Conversely, if isolated APG is used, the non-isolated monitor lines will be inaccurate.

4

M370078-01 4-3


Auxiliary Outputs

The auxiliary outputs are an additional isolated source. The auxiliary output has two outputs: +5 V output on J3.9 and a +15 V output on J3.11.

The auxiliary output operates independently of the main output. It is enabled or disabled from the front panel by pressing the OUTPUT

ENABLE Aux button. When the Aux output is enabled, the OUTPUT

ENABLE Aux button is illuminated. Like the main output of the power supply, the Aux also has the ability to Autostart at power up. See “Output

Auto Start Mode (Auto Restart)” on page 3–16 and “Auxiliary Auto Start

Mode” on page 3–17 for details on controlling this feature.

Table 4-2 provides a summary of the options available for programming output voltage and current set point using an analog source.

Table 4-2 Remote Programming Options

Control of… Programming Scale

1

Output voltage 2–10 V Voltage source (adjustable)

Current set point 2–10 V Voltage source (adjustable)

Output voltage 2–10 k

Ω Resistive source (adjustable)

Current set point 2–10 k

Ω Resistive source (adjustable)

1.The resolution can be adjusted in increments of 0.1 volts.

For more info…

See page 4–10.

See page 4–12.

See page 4–15.

See page 4–17.

4-4 M370078-01

Introduction

Analog Programming (APG) Connector J1

The APG connector is an 18-pin connector. See Figure 4-1.

The APG connector provides access to the following functions:

• Sense control

• Analog programming and monitoring.

Jumper Jumper

1 2 3 4

5

6 7 8

9 10

11 12 13 14

15 16 17

18

+SNS

+LS

-LS

-SNS

COM

VOL_PR

CUR_PR

Figure 4-1 APG Connector Terminals

Table 4-3 APG Pins and Functions J1

Pin Reference Function

J1.1

+SNS Positive (+)

J1.2

+LS Positive (+)

Sense

Local Sense

}

Jumper. Factory default condition.

J1.3

–NC

J1.4

–NC

J1.5

–LS Negative (–)

J1.6

–SNS Negative (–)

Local Sense } Jumper. Factory default condition.

Sense

J1.7

COM Analog Common Same as power supply negative sense (–SNS)

J1.8

COM Analog Common Same as power supply negative sense (–SNS)

REF_I

CSH

EXT_CC_CV

CUR_MON

VOL_MON

CUR_RES_PR

VOL_RES_PR

M370078-01 4-5

4


Table 4-3 APG Pins and Functions J1

Pin

J1.14

J1.15

J1.16

J1.17

Reference

J1.9

VOL_PR

J1.10

CUR_PR

J1.11

VOL_RES_PR

J1.12

CUR_RES_PR

J1.13

VOL_MON

1

CUR_MON

1

EXT_CC_CV

CSH

REF_I

Function

Analog Voltage Programming Input

Analog Current Programming Input

Voltage Resistive Programming Input

Current Resistive Programming Input

Voltage Monitor. The scale of this output is set by the APG voltage input range selected (see Important note below).

Current Monitor. The scale of this output is set by the APG current input range selected (see Important note below).

External CC/CV. Indicates the state of the operate mode. When in CV mode, logic high is output and when in CC mode, logic low is output. Logic is TTL/CMOS compatible.

Current Share. Used to hook up units for current sharing. Output from master unit. Slave units should be left open.

Current Reference Input. Slave input from current share output on the master unit.

J1.18

NC

1.Important: Non-isolated monitor lines are only valid in local control, digital remote and nonisolated analog programming modes for the respective voltage and current control. If isolated analog programming is used, the isolated monitor lines should be used as the non-isolated monitoring lines will not accurately reflect the output state of the power supply.

4-6 M370078-01

Introduction

Making Control Connections


Before making connections from external circuits to the Analog Programming

Connector, turn the front panel power switch to Off and wait until the front panel displays are not illuminated.


Program/monitor signal and return are internally connected to the power supply negative output (-S). Do not attempt to bias these away from that potential.

To connect the output wires to the APG and DC output connector:

1. Insert a 3/32 inch slot-head screwdriver into the orange-colored box of the connector until the end of the spring is reached. See Figure 4-2.

2. Hold the connector open and insert the applicable output wire.

3. Remove the screwdriver.

4

Figure 4-2 Inserting Screwdriver into Spring Terminal Block

M370078-01

Figure 4-3 APG and DC Output Connector

4-7


Wiring


There is a potential shock hazard at the output when using a power supply with a rated output greater than 60 V. Use load wiring with a minimum insulation rating equivalent to the maximum output voltage of the power supply. For example, select TEW, 105 °C, 600 V wiring for use with a 600 V, 1.4 A power supply.

For most connectors and jumpers, use any suitable wire such as 20 to

26 AWG stranded wire. For lowest noise performance, use shielded twisted pair wiring of 20 to 26 AWG of the shortest length possible.

Ground the shield to pin J1.7 (analog common) on the Analog

Programming Connector or to the chassis via one of the Analog

Programming Connector screws.

4-8 M370078-01

Analog Programming Mode

Analog Programming Mode

For more details about connections for your particular model, see “Rear

Panel Connectors” on page 1–6 or “” on page 1–7.


The program/monitor signal and return are internally connected to the power supply’s negative output. Do not attempt to bias these away from that potential.

See “Making Control Connections” on page 4–7.

Analog Programming With External Voltage Source

The pin numbers are described in Table 4-3 on page 4–5.

J1.9

J1.7

Figure 4-4 Programming Output Voltage using an External Voltage

Source

4

J1.10

J1.7

M370078-01

Figure 4-5 Programming Output Current using an External Voltage

Source

4-9


Voltage-Controlled Voltage APG Setup

Activating APG Voltage Mode

To activate APG voltage mode using an external voltage source:

1. Turn the 9-position mode control to the VAP position or press the rotary Adjust/Enter control if the mode control is already at the VAP position.

UAPr is displayed on the output voltage display.

2. Turn the rotary Adjust/Enter control to select Un1S (voltage source from non-isolated connector).

3. Press the rotary Adjust/Enter control to commit the selected mode.

LE U is displayed on the output voltage display.

4. Once the desired level has been selected, press the rotary Adjust/Enter control to commit the change.

The display will return to the normal display.

Deactivating APG Voltage Mode

To deactivate the APG voltage mode:


2. UAPr is displayed on the output voltage display.

3. Turn the rotary Adjust/Enter control to select nonE.

4. Press the rotary Adjust/Enter control to commit the change.


4-10 M370078-01


Query for Analog Voltage Input Level

Quick Tip


To query for analog voltage input level from non-isolated input:



2. If the mode is currently nonE then select any other APG mode. If this step is done, be sure to restore the APG setting to nonE when the operation is complete. Otherwise, do not rotate the rotary Adjust/Enter control to keep the current APG mode.

3. Press the rotary Adjust/Enter control to select the APG mode.

The output voltage display should read LE U and the output current display will display APG level.

4. Press the rotary Adjust/Enter control to return to normal mode.

5. If the APG mode was modified in step 2, execute the procedure to deactivate the APG voltage mode.

The SCPI commands for these instructions are:

[:]SYSTem[<channel>]:REMote:SOURce[:VOLTage] <?|LOCal

|AVOLtage|IAVoltage|ARESistive|IAResistive>

[:]SYSTem[<channel>]:COMMunicate:APRogram:LEVel[:VOLTage]

[:ISOlated]

[:]MEASure[<channel>][:SCALar]:APRogram[:VOLTage][:DC]?

4

M370078-01 4-11


Voltage-Controlled Current APG Setup

Activating APG Current Mode

To activate APG current mode using an external voltage source:

1. Turn the 9-position mode control to the CAP position or press the rotary Adjust/Enter control if the mode control is already at the CAP position.

CAPr is displayed on the output voltage display.

2. Turn the rotary Adjust/Enter control to select source Un1S (Voltage source from non-isolated connector).


LE C is displayed on the output voltage display.

4. Select the input source level using the rotary Adjust/Enter control.

5. Once the desired level has been selected, press the rotary Adjust/

Enter control to commit the change.


Deactivating APG Current Mode

To deactivate the APG current mode:


2. CAPr is displayed on the output voltage display.




4-12 M370078-01


Query for Analog Current Input Level

Quick Tip


To query for analog current input level from non-isolated input:



2. If the mode is currently nonE then select any other APG mode. If this step is done, be sure to restore the APG setting to nonE when the operation is complete. Otherwise, do not rotate the rotary Adjust/

Enter control to keep the current APG mode.


The output voltage display should read LE C and the output current display will display APG level.




[:]SYSTem[<channel>]:REMote:SOURce:CURRent <?|LOCal


[:]SYSTem[<channel>]:COMMunicate:APRogram:LEVel:CURRent

[:ISOlated]

[:]MEASure[<channel>][:SCALar]:APRogram:CURRent[:DC]?

4

M370078-01 4-13

t


Analog Programming With External Resistor


J1.9

J1.11

J1.7

Figure 4-6 Programming Output Voltage using an External Resistor

Figure 4-7 Programming Output Current using an External Resistor

4-14 M370078-01


Resistive-Controlled Voltage APG Setup

To activate APG voltage mode using an external resistor:



2. Turn the rotary Adjust/Enter control to select Rn1S (resistor source from non-isolated connector).






Deactivating APG Voltage Mode

To deactivate the APG voltage mode:






4

M370078-01 4-15


Query for Analog Voltage Input Level

Quick Tip


To query for analog voltage input level from non-isolated input:



2. If the mode is currently nonE then select any other APG mode. If this step is done, be sure to restore the APG setting to nonE when the operation is complete. Otherwise, do not rotate the rotary Adjust/Enter control to keep the current APG mode.


The output voltage display should read LE U and the output current display will display APG level.



The SCPI command for these instructions are:



[:]SYSTem[<channel>]:COMMunicate:APRogram:LEVel[:VOLTage]

[:ISOlated]

[:]MEASure[<channel>][:SCALar]:APRogram[:VOLTage][:DC]?

4-16 M370078-01


Resistive-Controlled Current APG Setup

To activate APG current mode using an external resistor source:

1. Turn the 9-position mode control to the CAP position to press the rotary Adjust/Enter control if the control knob is already at CAP position.


2. Turn rotary Adjust/Enter control to select Rn1S (voltage source from non-isolated connector).





Deactivating APG Current Mode

To deactivate the APG current mode:






4

M370078-01 4-17


Query for Analog Current Input Level

Quick Tip


To query for analog current input level from non-isolated input:



2. If the mode is currently nonE then select any other APG mode. If this step is done, be sure to restore the APG setting to nonE when the operation is complete. Otherwise, do not rotate the rotary Adjust/

Enter control to keep the current APG mode.


The output voltage display should read LE C and the output current display will display APG level.







[:ISOlated]

[:]MEASure[<channel>][:SCALar]:APRogram:CURRent[:DC]?

4-18 M370078-01


Voltage and Current Readback


Figure 4-8 Voltage Readback Using APG Connector J1

4

Figure 4-9 Current Readback Using APG Connector J1

M370078-01 4-19


Isolated Analog Programming Mode (ISOL)

See “Rear Panel Connectors” on page 1–6 or “” on page 1–7 for more details about connections.

AUX Output and Isolated Analog Programming (ISOL) Connector

The AUX Output and Isolated Analog Programming (ISOL) Connector is a 15-pin female DSUB connector. See Figure 4-10. All pins on this connector are electrically isolated from the output of the power supply.

The AUX Output and ISOL Connector provides access to the following functions:

• Auxiliary +5 V and +15 V outputs

• OUTPUT ENABLE Aux

• Power On Status (output)

• SD—Shutdown (input)

• Interlock

• ISOL programming and monitoring.

IS_VOL_PR_VOL

IS_VOL_PR_CUR

IS_MON_VOL

COM_ISOLATED

AUX1 & AUX2 On/Off

AUX1 (+5V)

IS_MON_CUR

ISO_CUR_RES_PR

COM_ISOLATED

ISO_VOL_RES_PR

INTER_LOCK 1

INTER_LOCK 2

MAIN PS_GOOD

Figure 4-10 AUX Output and ISOL Connector Pinout

AUX2 (+15V)

SD (Shutdown Main O/P)

4-20 M370078-01

Isolated Analog Programming Mode (ISOL)

Table 4-4 AUX Output and ISOL Connector Pins and Functions J3

PIn Reference Function

J3.1

J3.2

AUX_ON_OFF

COM_ISOLATED

J3.3

IS_VOL_PR_VOL

J3.4

IS_VOL_PR_CUR

J3.5

IS_MON_VOL

1

Auxiliary enable/disable

Isolated Common (Isolated from Main Output and Communication.

Return wire for +5 V, +15 V Auxiliary Voltage.

Isolated Analog Voltage Programming Input

Isolated Analog Current Programming Input

J3.6

COM_ISOLATED

J3.7

ISO_CUR_RES_PR Isolated Current Resistive Programming

J3.8

ISO_VOL_RES_PR Isolated Voltage Resistive Programming

J3.9

+5 V Isolated Output

J3.10

+AUX 1

2

IS_MON_CUR

1 Isolated Current Monitor. Scaled to the value of the Voltage Analog

Programming Level.

J3.11

+AUX 2

2

J3.12

SD

Isolated Voltage Monitor. Scaled to the value of the Voltage Analog

Programming Level.

Isolated Common (Isolated from Main Output and Communication.

Return wire for control signals, monitoring and programming.

J3.13

J3.14

J3.15

PS_GOOD

INTER_LOCK 1

INTER_LOCK 2

+15 V Isolated Output

Shutdown. Input to power supply to disable output. This input has user selectable negative logic operation via front panel or remote digital input/output.

PS_GOOD. Power supply output enabled.

Interlock. Dry contact type. Shorting pins J3.14 and J3.15 while the interlock functionality is enabled, will enable the output of the power supply.

Interlock

1.Important: Isolated monitor lines are only valid when Isolated analog programming modes are used for the respective voltage and current control. If local control, digital control or non-isolated APG is used, the non-isolated monitor lines should be used as the isolated monitor lines will not accurately reflect the output state of the power supply.

2.Use unshielded cable up to 9.84 feet (3 m) length with high-density D-Sub type connector and a ferrite bead (Fair-Rite part number 0443164251).

4

M370078-01 4-21



Do not drive or apply a voltage to pins J3.14 (Inter_Lock 1) or to pins J3.15

(Inter_Lock 2).

4-22 M370078-01


Making ISOL Control Connections


Before making connections from external circuits to the Isolated Analog

Programming Connector, turn the front panel power switch to off and wait until the front panel displays have gone out.

For most connectors and jumpers, use any suitable wire such as 22

AWG stranded wire. For lowest noise performance, use shielded twisted pair wiring of 22 AWG. Use the shortest leads possible. +5 V and +15 V

Auxiliary Output reference to pin 2 and 6 (isolated common) on the

ISOL Connector.

ISOL Programming With External Voltage Source


4

V

Figure 4-11 Programming Output Voltage using an Isolated External

Voltage Source

V

M370078-01

Figure 4-12 Programming Output Current using an Isolated External

Voltage Source

4-23


Voltage-Controlled Voltage ISOL Setup

Activating ISOL Programming Voltage Mode

To activate ISOL programming voltage mode with an external voltage source:

1. Turn the 9-position mode control to the VAP position or press the rotary Adjust/Enter control if the mode control is already at the

VAP position.

WAPr is displayed on the output voltage display.

2. Turn rotary Adjust/Enter control to select U IS (voltage source from isolated connector).







Deactivating ISOL Voltage Mode

To deactivate the ISOL voltage mode:

1. Turn the 9-position mode control to the VAP position or press the rotary Adjust/Enter control if the mode control is already at the

VAP position.





4-24 M370078-01


Query for ISOL Voltage Input Level

Quick Tip


To query for ISOL voltage input level from non-isolated input:

1. Turn the 9-position mode control to the VAP position or press the rotary Adjust/Enter control if the control knob is already at the VAP position.


2. If the mode is currently nonE then select any other ISOL mode. If this step is done, be sure to restore the ISOL setting to nonE when the operation is complete. Otherwise, do not rotate the rotary

Adjust/Enter control to keep the current ISOL mode.

3. Press the rotary Adjust/Enter control to select the ISOL mode.

The output voltage display should read LE U and the output current display will display ISOL level.


5. If the ISOL mode was modified in step 2, execute the procedure to deactivate the ISOL voltage mode.




[:]SYSTem[<channel>]:COMMunicate:APRogram:LEVel

[:VOLTage][:ISOlated]

[:]MEASure[<channel>][:SCALar]:APRogram[:VOLTage]

:ISOlated[:DC]?

4

M370078-01 4-25


Voltage-Controlled Current ISOL Setup

Activating ISOL Programming Current Mode

1. Turn the 9-position mode control to the CAP position or press the rotary adjust/Enter control if the control knob is already at the CAP position.


2. Turn the rotary Adjust/Enter control to select U IS (voltage source from isolated connector).

3. Press the rotary adjust/Enter control to commit the selected mode.


4. Select the input source level using the rotary adjust/Enter control.

5. Once the desired level has been selected, press the rotary adjust/



Deactivating ISOL Current Mode

To deactivate the ISOL current mode:






4-26 M370078-01


Query for ISOL Current Input Level

Quick Tip


To query for ISOL current input level from non-isolated input:

1. Turn the 9-position mode control to the CAP position or press the rotary Adjust/Enter control if the control knob is already at the CAP position.




3. Press the rotary adjust/Enter control to select the ISOL mode.

The output voltage display should read LE C and the output current display will display ISOL level.

4. Press the rotary adjust/Enter control to return to normal mode.



[:]SYSTem[<channel>]:REMote:SOURce:CURRent: <?|LOCal



[:ISOlated]

[:]MEASure[<channel>][:SCALar]:APRogram:CURRent

:ISOlated[:DC]?

4

M370078-01 4-27


Analog Programming With External Resistor


Figure 4-13 Programming Output Voltage using an Isolated External

Resistor

Figure 4-14 Programming Output Current using an Isolated External

Resistor

4-28 M370078-01


Resistive-Controlled Voltage ISOL Setup

Activating ISOL Programming Voltage Mode

To activate ISOL programming voltage mode using an external resistor:

1. Turn the 9-position mode control to the VAP position or press the rotary adjust/Enter control if the control knob is already at the VAP position.


2. Turn the rotary Adjust/Enter control to select R IS (resistor source from isolated connector).

3. Press the rotary adjust/Enter control to commit the selected mode.


4. Select the input source level using the rotary adjust/Enter control.




Deactivating ISOL Voltage Mode

To deactivate the ISOL voltage mode:




4. Press the rotary adjust/Enter control to commit the change.


4

M370078-01 4-29

Query for ISOL Voltage Input Level

Quick Tip


To query for ISOL voltage input level from non-isolated input:





3. Press the rotary adjust/Enter control to select the ISOL mode.

The output voltage display should read LE U and the output current display will display ISOL level.

4. Press the rotary adjust/Enter control to return to normal mode.






[:VOLTage][:ISOlated]

[:]MEASure[<channel>][:SCALar]:APRogram[:VOLTage]

:ISOlated[:DC]?

4-30


Resistive-Controlled Current ISOL Setup

Activating ISOL Resistive-Controlled Current Setup



2. Turn rotary Adjust/Enter control to select R IS (voltage source from isolated connector).







Deactivating ISOL Current Mode

To deactivate the ISOL current mode:






4

M370078-01 4-31


Query for ISOL Current Input Level

Quick Tip


To query for ISOL current input level from non-isolated input:





3. Press the rotary Adjust/Enter control to select the ISOL mode.

The output voltage display should read LE C and the output current display will display ISOL level.







[:ISOlated]

[:]MEASure[<channel>][:SCALar]:APRogram:CURRent

:ISOlated[:DC]?

4-32 M370078-01

Voltage and Current Readback (Isolated)

Voltage and Current Readback (Isolated)


V

Figure 4-15 Isolated Voltage Monitoring

4

V

Figure 4-16 Isolated Current Monitoring

Query Remote Control Source State

Quick Tip



[:]SYSTem[<channel>]:REMote:SOURce[:VOLTage]?

[:]SYSTem[<channel>]:REMote:SOURce:CURRent?

M370078-01 4-33


4-34 M370078-01

5

Remote Operation

Chapter 5, Remote Operation, describes the remote

operation of the XG power supply via the communication ports.

Remote Operation

Introduction

In addition to the front panel interface, the XG can be remotely controlled through the various remote interfaces. The XG implements the SCPI standard as its command line interface for remotely controlling the power supply. Additionally, a small subset of legacy commands has been provided for ease of use and backwards compatibility. All of the remote interfaces use the same command line interface.

This chapter is divided into two parts:

• Hardware and Connection Setup provides information on how to setup a connection to the different remote interfaces available on the

XG. The remote interfaces covered include RS-232, RS-485, USB,

GPIB and ENET.

• Command Line Interface and SCPI explains how to send commands to the power supply using the SCPI commands and the theory behind

SCPI.

5-2 M370078-01

Hardware and Connection Setup

Hardware and Connection Setup

This section provides information on setting up the hardware and is organized into setup for each hardware type. Once the setup has been successfully completed, data can be sent to and responses received from the power supply. Select which hardware interface to use and follow the instructions and diagram for that hardware set up.

Configuring Remote Control Using RS-232

To configure remote control using RS-232:

1. Use the top J4 connector of the two 8-pin RJ-45 jacks, as shown in

Figure 5-1

, to connect to the RS-232 remote interface.

2. Connect from PC to power supply using a cable that meets the

cabling specifications listed in Table 5-1.

M370078-01

J4:

RS-232 and RS-485 connector in port

J6:

RS-232 and RS-485 connector out port

Figure 5-1 Remote Control Connectors

Table 5-1 Remote Control Connector Pins and Functions J4 and J6

1

Pin Reference

J4.1

RX-232

J4.2

TX-232

J4.3

RXD+

J4.4

RXD–

J4.5

TXD+

J4.6

TXD–

J4.7

GND

J4.8 NC

J6.9

NC

Direction

Input

Output

Input

Input

–

–

Output

Output

–

Function

RS-232

RS-232

RS-485 receiving

RS-485 receiving

RS-485 transmitting

RS-485 transmitting

Ground

–

–

5-3

5

Remote Operation

Table 5-1 Remote Control Connector Pins and Functions J4 and J6

1

Pin Reference Direction Function

J6.10

NC

J6.11

RXD+

J6.12

RXD–

J6.13

TXD+

J6.14

TXD–

J6.15

GND

J6.16

NC

–

Input

Input

–

–

Output

Output

–

RS-485 receiving

RS-485 receiving

RS-485 transmitting

RS-485 transmitting

Ground

–

1.All references and directions indicated in this table are with respect to the XG.

RS-232 Communication Cable with RJ-45 to DB-9

Communication control cable with DB-9 connector (male) on the PC side and RJ-45 shielded connector on the power supply. The cable length should be 9.84 feet (3 m) or longer.

Table 5-2 DB-9 Pinouts

Pin Name Description

1

2

3

4

5

6, 7, 8, 9

NC

RX

TX

NC

GND

NC

No connection

Receive data

Transmit data

No connection

Ground

No connection

Twisted pair

Table 5-3 RJ-45 Pinouts

Pin

1

2

3, 4, 5, 6

7

8

Name

RX

TX

NC

GND

NC

Description

Receive data

Transmit data

No connection

Ground

No connection

Twisted pair

5-4 M370078-01


DB-9 Pinout

DB-9 connector on PC RJ-45 plug

Figure 5-2 RS-232 Communication Cable with DB-9 Pinout


Communication control cable with DB-25 pinout (male) on the PC side and RJ-45 shielded connector on the power supply. The cable length should be 9.84 feet (3 m) or longer.

Figure 5-3 DB-25 Pinout



1

2

3

4, 5, 6

7

8, 9

NC

TX

RX

NC

GND

NC

No connection

Transmit data

Receive data

No connection

Ground

No connection

Twisted pair

5

M370078-01 5-5

Remote Operation

DB-25 connector on PC

RJ-45 plug

Figure 5-4 RS-232 Communication Cable with DB-25 Pinout

Completing the Setup

To complete the setup:

◆ Configure the XG to use the 232 remote interface and set up the terminal that will be used on the connected PC.

See the sections entitled“Selecting the Appropriate Communication

Port” on page 5–20 and “Terminal Configuration” on page 5–17 for

more details.

5-6 M370078-01


Configuring Remote Control Using RS-485


Communication control cable with DB-9 pinout (female) on the PC side

(see Figure 5-2) and RJ-45 shielded connector on the power supply.

The cable length should be 9.84 feet (3 m) or longer.


Pin

4

5

1

2, 3

6, 7

8

9

Name

GND

NC

RXD+

RXD–

NC

TXD+

TXD–

Description

Ground

No connection

Receive data

Receive data

No connection

Transmit data

Transmit data

Twisted pair

Twisted pair

Table 5-6 RJ-45 Plug Pinouts


7

8

5

6

1, 2

3

4

NC

TXD+

TXD–

RXD+

RXD–

GND

NC

No connection

Transmit data

Transmit data

Receive data

Receive data

Ground

No connection

Twisted pair

Twisted pair

5

M370078-01

DB-9 connector on PC

RJ-45 plug

Figure 5-5 RS-485 Communication Cable with DB-9

5-7

Remote Operation

RS-485 Communication Cable with Two RJ-45s

Use the top connector of the two 8-pin RJ-45 jacks, as shown in

Figure 5-1, to connect to the RS-485 remote interface. Communication

cable with two RJ-45 shielded connectors (see Figure 5-3 ) connecting the master unit to the slave unit. The cable length should be 9.84 feet (3 m) or longer. The pinouts for the RJ-45 plug on the master unit are the same as described in Table 5-7.

Table 5-7 RJ-45 Plug on Slave Unit

Pin

6

7

8

4

5

1, 2

3

Name

NC

RXD+

RXD–

TXD+

TXD–

GND

NC

Description

No connection

Receive data

Receive data

Transmit data

Transmit data

Ground

No connection

Twisted pair

Twisted pair

Master unit (J6) Slave unit (J4)

Figure 5-6 RS-485 Communication Cable from Master to Slave Unit

Completing the Setup


◆ Configure the XG to use the 485 remote interface and setup the terminal that will be used on the connected PC.

See sections entitled “Selecting the Appropriate Communication

Port” on page 5–20 and “Terminal Configuration” on page 5–17 for

more details.

5-8 M370078-01


Configuring Remote Control using the USB Connector

The power supply can be controlled from a remote terminal using a USB interface. The standard USB connector is located on the rear panel of the

XG 850 Watt, as shown in Figure 1-3. Use a standard USB shielded cable up to 9.84 feet (3 m) in length.

Setting Up the PC to Use the USB Connection

Installing USB to Serial Converter and Serial Port

To set up the USB connection, you’ll need to download the latest driver from Future Technology Devices International Ltd. or from

www.programmablepower.com.

To download and install a virtual COM port (VCP) driver:

1. Go to www.programmablepower.com and navigate to the XG product web page.

2. Click the download link to download the driver.

3. Download the appropriate virtual COM port (VCP) drivers for your operating system (with enhanced BM series support).

4. Create a folder C:\FTDI.

5. Unzip files from the archive into this folder.

6. Connect your device to a spare USB port on your computer.

The Found New Hardware Wizard automatically launches, as shown

in Figure 5-7.

5

M370078-01 5-9

Remote Operation

Figure 5-7 Found New Hardware Wizard

7. Click Next.

8. On the Install Hardware Device Driver screen, select “Search for a suitable driver for my device (recommended)” and click Next. See

Figure 5-8.

5-10

Figure 5-8 Install Hardware Device Drivers

M370078-01


9. In the Locate Driver Files dialog box, in the field Optional Search

Locations, select Specify A Location and click Next.

10. On the next screen, enter the file path “C:\FTDI” and click OK.

11. On the next screen, select “Driver Files Search Results” and click

Next.

12. In Completing the Found New Hardware Wizard, see Figure 5-9,

click Finish to complete the installation.

Figure 5-9 Completing the New Hardware Wizard

This completes the first part of the installation during which the USB to serial converter is installed. The second part involves the installation of a serial port, which should follow automatically once the converter installation is complete. Installation of the serial port does not require any user intervention.

Verifying Installation

Once the installation of the serial port has completed, verify that the installation has been successful by looking under Device Manager of the

System Properties screen. The device should have installed as a USB

Serial Port (COMx) attached to USB High Speed Serial Converter.

5

M370078-01 5-11

Remote Operation

To verify that the device has been installed:

1. In Control Panel, go to System, click the Hardware tab and click on

Device Manager.

2. On the View menu, select Devices by Type.

3. To change the virtual COM port properties, select the USB Serial Port and then Click Properties.

This allows you to change serial port properties such as data rate

(bps) and data bits. You are also able to change the COM port which is assigned to your device.

4. Click the Port Settings tab, then click Advanced.

Figure 5-10 Device Manager

5-12 M370078-01


Figure 5-11 Communications Port (COM1) Properties

5. In the COM port list, scroll to the required COM port.

5

M370078-01

Figure 5-12 Completing the new hardware wizard

6. Click OK.

Ensure that you do not select a COM port which is already in use.

This selection is particularly useful for programs, such as

HyperTerminal, which only work with COM1 through to COM4.

5-13

Remote Operation

Complete the Setup


◆ Configure the XG to use the USB remote interface and set up the terminal that will be used on the connected PC.

See “Selecting the Appropriate Communication Port” on page 5–20

and “Terminal Configuration” on page 5–17 for more details.

5-14 M370078-01


Ethernet (ENET) or GPIB Connector (Optional)

The power supply can be programmed from a remote terminal using a

General Purpose Interface Bus (GPIB interface) or Ethernet (ENET). If you have a GPIB or ENET card, see the XG 850 Watt GPIB and Ethernet

Interface Option Operating Manual (Part number M370078-06).

The GPIB interface is an 8-bit parallel data bus having a host of bus commands for synchronization and up to one megabyte data transfer rate.

Use standard IEEE-486, 26 AWG GPIB cable up to 3 metres length.

For connecting the power supply to ENET, use a LAN RJ-45 and RJ-45

STP, Cat 5 cross-cable 9.84 feet (3 m) in length or longer. Use a standard

RJ-45 and RJ-45 cross-cable.

Multiple Power Supply Connections to RS-485 Bus

Up to 30 units may be connected to the RS-485 bus. The first unit (master unit) connects to the controller via any appropriate port, and the other units (slave units) are connected with the RS-485 bus via the J6 connector. All units connected together should also have unique multichannel addresses.

A standard straight-through RJ-45 ethernet network cable can be used to

provide the connection between the power supplies. See Figure 5-13.

5

Figure 5-13 Multi Power Supply Connection to RS-485 Bus

M370078-01 5-15

Remote Operation

Multiple Power Supply Setup

Master Setup:

◆ Configure the master XG by selecting the communication interface you wish to use to communication with the Master and follow the setup instruction in this chapter.

Important:

If either RS-232 or RS-485 are used for communication with the master, the data rate must be configured for 9600 bps to properly communicate with the slave units.

Slave Setup:

1. Turn the 9-position mode control to PGM.

rE is displayed in the output voltage display.

2. Turn the rotary Adjust/Enter control to select SLA and press the Enter button.

3. Set a unique address. See “Multichannel Address Setting” on page 5–

21.

5-16 M370078-01

Terminal Configuration

Terminal Configuration

The terminal program allows serial communication with the power supply. To use a terminal program, set it up using the parameters from the following sections. If you wish to use HyperTerminal, see

“HyperTerminal” on page 5–17 for instructions setting it up.

Data Format

End of Message

The end of message is the Carriage Return character (ASCII 13,

0x0D).The power supply ignores the Line Feed (ASCII 10, 0x0A) character.

HyperTerminal

Serial data format is 8 bit, one stop bit. No parity bit. Flow control: none.

The HyperTerminal program is a standard windows program and can be found in Start >All Programs >Accessories >Communications

>HyperTerminal.

Setting up a HyperTerminal connection

To set up a HyperTerminal connection:

1. When HyperTerminal opens, it will immediately enter the New

Connection wizard.

• If you don't already have a connection saved, continue.

• If you do, click cancel and then open the pre-existing connection and skip the remaining steps in this procedure.

2. Enter a name.

Include the name of the interface you are intending to use for the connection as part of the name.

3. Click OK.

4. Select the COM port that is connected to the interface you wish to use to connect to the XG.

5

M370078-01 5-17

Remote Operation

This is the COM port that you have your serial cable hooked up to or in the case of USB the one that was configured to be used in the FDTI software.

5. Click OK when done.

6. Setup the data format to be used. See “Data Format” on page 5–17 for

details.

7. Set up the Hyper terminal you will need to configure the properties.

8. Click File>Properties to bring up the connection properties dialog and click on the Settings tab.

5-18

Figure 5-14 USB Settings

9. Fill out the following selections in the connection properties dialog:

• Terminal keys

• Ctrl+H, Space, Ctrl+H.

• On the Emulation list, select ANSI.

10. Click on the ASCII Setup button to bring up the ASCII Setup dialog.

M370078-01


M370078-01

Figure 5-15 ASCII Setup

11. Check the following boxes:

• Send line ends with line feeds.

• Echo typed characters locally.

• Append line feeds to incoming line ends.

• Wrap lines that exceed terminal width.

12. Change the Line delay to 30 milliseconds.

13. Click OK in the ASCII Setup window.

14. Click OK in the Properties window.

HyperTerminal has now been configured to communicate with the

XG.

5

5-19

Remote Operation

Selecting the Appropriate Communication Port

Five ports are available for remote digital programming and readback:

• RS-232

• RS-485

• USB

• GPIB (optional)

• ENET (optional)

To select a communication port:

1. Turn the 9-position mode control to PGM.

rE is displayed in the output voltage display.

2. Turn the rotary Adjust/Enter control to select one of the communication ports: 232, 485, gPIb, USb, LAn.

LOCL Loc is also an available option which lets you lock the front panel to prevent the settings from being changed.

Important:

The remote interface that was previously configured when the local lock setting was activated will still be available for remote control while the front panel is locked.

Data Rate Setting (Kbps)

The data rate setting is available for RS-232 and RS-485 protocols only.

Five optional rates are possible: 1.2, 2.4, 4.8, 9.6 (default), 19.2, 38.4, and

57.6 kilo bits per second (Kbps).

To select the desired rate:

1. Turn the 9-position mode control to PGM. rE is displayed in the output voltage display.

2. Turn the rotary Adjust/Enter control to select 232 (RS-232) or 485

(RS-485) communication ports.


HbPS is displayed on the output voltage display and the currently set data rate is displayed on the output current display.

4. Turn the rotary Adjust/Enter control to select the desired data rate.

5. Press enter to commit the new data rate.

The multichannel address setting will now be configured.

5-20 M370078-01


Multichannel Address Setting

The power supply multichannel address can be set to any address between

1 to 30. All units that are connected together via the RS-232 or RS-485 connector must have a unique multichannel address.

To set the address:

1. Select the appropriate communication port as described “Selecting the Appropriate Communication Port” on page 5–20.

If more than one unit has the same multichannel address when connected through the RS-485 connector, then collisions are possible, resulting in garbled responses to queries.


ADDR is displayed on the output voltage display.

3. Turn the rotary Adjust/Enter control to select the desired multichannel address between 1 to 30.

4. Press the rotary Adjust/Enter control to commit the new address.

5

M370078-01 5-21

Remote Operation

Remote Interface Addressing

All commands must be issued with a multichannel address or the device must be selected using the:

*adr or :SYST[<channel>]:COMM[:MCH]:ADDR commands.

Once a device is selected all commands sent without a multichannel address will be handled by the selected device. The use of multichannel addresses supersedes the selected device as the destination for a message.

For more details on how multichannel addresses affect responses, see

Table 5-8.

To change the selected device simply issue the *adr or

:SYST[<channel>]:COMM[:MCH]:ADDR

command with a different multichannel address. The previously selected device will be deselected and the new device will be selected. From that point on, all messages without a multichannel address will be destined for the newly selected device. It is possible to deselect all devices by using the aforementioned commands with the broadcast address, 0.

The SCPI Commands for these instructions are:

[:]SYSTem:COMMunicate[:MCHannel]:ADDRess <address> or

*ADR <address>

Where:

<address> is the multichannel address of the device to be selected. The address is an integer value from 1 to 30.

5-22 M370078-01


Multichannel Commands Explained

The use of multichannel addressing allows you to send messages to one device, more than one device or to all devices. Any of the remote interface types can be used to send a multichannel command through the device that is physically connected to the PC to all the devices, provided that all other devices are connected to via the RS-485 bus. In order to use multichannel addressing, the setup of the wiring should be completed as

described in “Multiple Power Supply Connections to RS-485 Bus” on page 5–15.

All SCPI commands in the XG support the use of multichannel addressing; however, only one device can respond to a message.

Responses will be sent according to the conditions set out in Table 5-8.

Table 5-8 Rules for Multichannel Responses

Condition Response

No multichannel address used

Single multichannel address specified

ALL or broadcast multichannel address specified

Multiple multichannel addresses specified

Only the device selected using the *adr or

:SYST[<address>]

:COMM[:MCH]:ADDR commands will respond.

The device addressed in the command will respond regardless of if it has been selected.


:SYST[<channel>]:C

OMM[:MCH]:ADDR commands will respond. If none of the devices have been selected then no response will be seen.


:SYST[<address>]

:COMM[:MCH]:ADDR commands will respond. If none of the device have been selected then no response will be seen.

Example

SYSTem:VERSion?

SYSTem2:VERSion?

:SYSTem

ALL:VERSion? or

:SYSTem0:VERSion?

SYSTem

1,2,4,5,6:VERSion?

5

M370078-01 5-23

Remote Operation

Multichannel commands are particularly useful for configuring groups of devices that require identical configurations.


[:]<root command> <ALL|addr1>[,[ ]<addr2>][,[

]<addr3>][,...]:<command> <parameter>

For example: sour 1, 2, 3, 7:volt 4.5

syst4,5,6:oper:enab 255 syst ALL:clear output0:stat on

5-24 M370078-01


Status Reporting in SCPI

The status reporting implemented in the XG is primarily dictated by the

SCPI standard. This section provides a high level review of the standard status reporting required by SCPI and then covers the XG specific reporting that is implemented within the SCPI status reporting framework.

Figure 5-16 is taken from the SCPI 99 standard and shows the minimum

status reporting requirements for a SCPI compliant device.

Throughout this chapter, figures are used to explain the relationship between the registers, enable/disabling register and their summary bits.

The figures use four logical symbols to demonstrate the relationship between the register. The “!” block represents logical not or complement of the input signal. The “&” block represents the logical AND operator.

The “|” block represents the logical OR operation. The “+” block represents the logical OR of all the bits from the enable register. The model has several ellipses which are there to indicate that the pattern of logic shown is repeated for all bits in the registers.

5

M370078-01 5-25

Remote Operation

QUEStionable Status

VOLTage

CURRent

TIME

POWer

TEMPerature

FREQuency

PHASe

MODulation

CALIbration

Available to designer




INSTrument Summary

Command Warning

Not Used*

2

3

4

0

1

7

8

5

6

9

10

11

12

13

14

15

+

CALIbrating

SETTing

RANGing

SWEeping

MEASuring

Waiting for TRIGger Summary

Waiting for ARM Summary

CORRecting






INSTrument Summary

PROGram Running

Not Used*

OPERation Status

11

12

13

14

15

7

8

9

10

0

1

2

3

4

5

6

+

Standard Event

Status Register

Operation Complete

Request Control

Query Error

Device Dependent Error

Execution Error

Command Error

User Request

Power On

2

3

4

0

1

5

6

7

+




MAV

RQS

Figure 5-16 SCPI Status Reporting Model

Error/Event Queue

Status Byte

2

3

4

0

1

5

6

7

5-26 M370078-01

Status Registers Model from IEEE 488.2

Status Registers Model from IEEE 488.2

The IEEE 488.2 registers shown in the bottom rectangle of Figure 5-16

follow the IEEE 488.2 model for status registers. The IEEE 488.2 register

only has enable registers for masking the summary bits. Figure 5-17

shows the details on the relationship between the mask/enable registers and the summary bits. Sections describing the bits for both registers will

follow Figure 5-17.

Error/Event Queue Status Flag

QUEStionable SCPI Register

Summary Bit

OPERational SCPI Register

Summary Bit

...

0

3

4

1

2

5

6

7

Standard

Event Status

Register

(SESR )

&

&

&

&

&

&

&

&

SESR

Summary

Bit

+

SERS Enable

Register

3

4

5

6

7

0

1

2

Figure 5-17 IEEE 488.2 Register Model

Status Byte

Register

2

3

0

1

4

5

6

7

Status Byte

Enable Register

6

7

4

5

2

3

0

1

&

&

&

&

&

&

Summary

&

MSS

Bit

+

5

M370078-01 5-27

Remote Operation

Status Byte

The Status byte register contains the STB and RQS (MSS) messages as defined in 488.1. You can read the status byte register using a 488.1 serial poll or the 488.2

*STB?

common command.

The *STB? query causes the device to send the contents of the Status

Byte Register and the Master Summary Status (MSS) summary message.

The *STB? query does not alter the status byte, MSS, or RQS.

0

1

2

Table 5-9 Status Byte Summary Register

Bit Bit

Weight Bit Name Description

3

4

5

6

7

1

2

4

8

16

32

64

128

Reserved

Reserved

Reserved

Reserved

Error/Event Queue

(ERR)

Questionable Status

Register (QSR)

Message Available

(MAV)

Set if any errors are present in the Error/Event queue.

Set if any bits are set in the Questionable Status Event register.

Indicates whether the output queue is empty. MAV is

TRUE if the device is ready to accept a request from the controller.

A summary of the Standard Event Status Register.

Standard Event Status

Bit Summary (ESB)

Request Service (RQS) /

Master Status Summary

(MSS)

Not Implemented / MSS indicates that the device has at least one reason for requesting service.

Operation Status

Register (OSR)

Present if a bit is set in the Operation status register.

Error/Event Queue (ERR)

This bit is TRUE if any errors are present in the Error/Event Queue.

Questionable Status Register Summary (QSR)

This bit is TRUE when a bit in the Questionable Event Status Register is set and its corresponding bit in the Questionable Status Enable Register is

TRUE.

5-28 M370078-01

Status Byte

Message Available (MAV)

This bit is TRUE whenever the power supply is ready to accept a request by the Digital Programming Interface to output data bytes. This message is FALSE when the output queue is empty.

Standard Event Status Summary (ESB)

This bit is TRUE when a bit is set in the Standard Event Status Register.

Master Summary Status (MSS)

This is caused by one of the following:

• Status Byte bit 0 AND Service Request Enable Register bit 0






• Status Byte bit 7 AND Service Request Enable Register bit 7.

Request Service (RQS)

RQS is TRUE if the Service Request Enable Register has a bit set and there is a corresponding bit within the Status Byte.

5

M370078-01 5-29

Remote Operation

Operation Status Register Summary (OSR)

This bit is TRUE when a bit in the Operation Event Status Register is set and its corresponding bit in the Operation Status Enable Register is set.

Service Request Enable Register

The Service Request Enable Register allows you to select the reasons for the power supply to issue a service request. The Service Request Enable

Register allows you to select which summary messages in the Status Byte

Register may cause service requests.

To clear the Service Request Enable Register send *SRE 0. A cleared register does not allow status information to generate a service request.

For example:

Sending *SRE 8 sets bit 3 of the Service Request Enable Register. This will cause the Summary bit of the Questionable Status register (bit 3) in the Status Byte to generate a service request message whenever it gets set.

(See “Status Byte” on page 5–28 for details.)

Command:

*SRE <Service-Request-Enable>, *SRE?

The SCPI equivalent for multichannel use:

[:]STATus[<channel>]:SREQuest[:ENABle] <status-enable>

[:]STATus[<channel>]:SREQuest[:ENABle?]

Query the Status Byte

The status byte query will return the contents of the status byte register and the MSS (Master Summary Status) message. The response is in the format of a weighted decimal value representing the status byte register and the MSS message (bit 6). Thus, the response to *STB? is identical to the response to a serial poll except that the MSS message appears in bit 5

in place of the RQS message. (See “Status Byte” on page 5–28 for

details.)

Command:

*STB?

SCPI equivalent:

[:]STATus [<address>]:SBYTe[:EVENt]?

5-30 M370078-01

Status Byte

Standard Event Status Register (SESR)

The standard event status register sets bits for specific events during power supply operation. All bits in the standard event status registers are set through the error event queue. The register is defined by IEEE 488.2 register and is controlled using 488.2 common commands: *ESE,

*ESE?

, and *ESR? as well as SCPI aliases for multichannel use.

Standard Event Status Enable Register

The Event Summary Enable command determines which bits in the

Standard Event Status Register are summarized in the Event Summary Bit

(ESB) of the Status Byte. This register will be cleared at power up. To enable events, you must make the logical sum of all values for the events that you to be reported and send this parameter in decimal format.

See Table 5-9 for values for the events to be enabled in <status-enable>

parameter.

For example, sending *ESE 16 sets bit 4 of the Standard Event Status

Enable Register. This will cause the Event Summary bit (ESB) in the

Status Byte to be set whenever the Execution Error bit (bit 4) in the

Standard Event Status Register gets set.

Command:

*ESE <status-enable>, *ESE?


[:]STATus[<channel(s)>]:STANdard:ENABle <status-enable>

[:]STATus[<channel(s)>]:STANdard:ENABle?

Standard Event Status Register

The Standard Event Status Register query allows you to determine the

current contents of the Standard Event Status Register. (See “Standard

Event Status Register (SESR)”. Reading this register clears it.

Command:

*ESR?


[:]STATus[<channel(s)>]:STANdard[:EVENt]?

M370078-01 5-31

5

Remote Operation

Figure 5-18 summarizes the Standard Event Status Register.

Standard Event

Status Register

(SESR)

SESR

Summary

Bit

Operation Complete

Not Used

Query Error


Execution Error

Command Error

Not Used

Power On

3

4

5

6

7

0

1

2

+

Status Byte

Register

Not Used

Not Used

Error/Event Queue Status Flag

QUEStionable Status Summary Bit

Not Used

OPERation Status Summary Bit

0

1

2

3

4

5

6

7

MSS

Summary

Bit

+

Figure 5-18 Summary of Standard Event Status Register

1

2

3

Table 5-10 Standard Event Status Register

Bit

0

4

2

4

8

Bit Weight Bit Name

1

16

Operation Complete

(OPC)

Description

Set if *OPC command has been received and all pending operations have been completed.

Request Control (RQC) Not implemented. Always set to 0.

Query Error (QYE) Not implemented.


(DDE)

Set if there is a device-specific error.

See “Device-Specific Error List” on page B–5 for a list possible error codes and descriptions.

Execution Error (EXE) Set if a program data element, following a header, was evaluated by the power supply as outside of its legal input range, or is otherwise inconsistent with the power supply’s capabilities. Suggests that a valid program message could not be properly executed due to some power supply condition.

See “Execution Error List” on page B–4 for a list of possible error codes and descriptions.

5-32 M370078-01

Status Byte

Table 5-10 Standard Event Status Register

Bit

5


32 Command Error (CME)

Description

Set if an IEEE488.2 syntax error has been detected by the parser, an unrecognized header was received, or a group Execute Trigger was entered into the input buffer inside an IEEE 488.2 program message.

6

7

64

128

8–15 N/A

User Request (URQ)

Power ON (PON)

Reserved

See “Command Error List” on page B–3 for a list of possible error codes and descriptions.

Not Implemented

Not Implemented

Reserved for possible future use by IEEE.

Bit values are reported as zero.

Operation Complete

The Operation Complete command causes the power supply to generate the operation complete message in the Standard Event Status Register

when all pending operations have been finished. See bit 0 in Table 5-10

for more details.

Command:

*OPC, *OPC?

Wait-to-Continue Command

The Wait-to-Continue command prevents the power supply from executing any further commands or queries until the no-operationpending flag is TRUE.

Command:

*WAI

5

M370078-01 5-33

Remote Operation

Standard SCPI Register Structure

All registers except the SERS and Status registers will have the following structure which control how they report status information. In all subsequent figures that have SCPI registers, this structure will be condensed down into a single block to simplify the figures. The simplified block will show a 16-bit register and the summary bit. See

Figure 5-19 for details on the structure used for each standard SCPI

register.

Figure 5-19 SCPI Register Model

5-34 M370078-01

OPERation Status Register

OPERation Status Register

The operation status register is a standard SCPI, 16-bit register which contains information about conditions which are part of the power supply's normal operation. The Operation Status data structure has the operation status register and two sub-registers to represent shutdown and protection shutdown. Each of the sub-registers is summarized in a summary bit.

Figure 5-20 represents the Operation Status data structure. The “+”

represents the logical summation/or of bits in a register. Table 5-11, Table

5-12, and Table 5-13 describe the meanings of each bit as well as the bit

number and bit weight.

S T A T u s :O P E R a tion :S H U T d o w n :P R O T e ctio n

O ve r V O L T a ge

U n d e r V O L T a ge

O ve r C U R R e nt

N o t U se d

A C O ff

O ver T E M P e ra tu re

N ot U se d

F o ld ba c k

F a n F a ilu re

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U sed

N o t U se d

N o t U sed

1 0

1 1

1 2

7

8

9

1 3

1 4

1 5

2

3

4

0

1

5

6

+

N e ve r U se d

S T A T u s :O P E R a tion :S H U T d o w n

P R O T e ctio n S u m m a ry

IN T erlo ck

N o t U se d

E xte rn al S h u td o w n

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U sed

N o t U sed

N o t U sed

N o t U se d

N o t U se d

N o t U se d

4

5

6

7

8

0

1

2

3

9

1 0

1 1

1 2

1 3

1 4

1 5

+

N e ve r U se d

S T A T u s:O P E R a tio n :C S H a re

M A S T e r

S L A ve

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U se d

N o t U sed

N o t U se d

N o t U sed

9

1 0

1 1

6

7

8

1 2

1 3

1 4

1 5

0

1

2

3

4

5

+

N e ve r U se d

Figure 5-20 Operation Status Register Fanout

S T A T us :O P E R atio n

C A L ib ratin g

N o t U se d

N o t U se d

N o t U se d

M E A S u rin g

W a itin g fo r T R IG g e r

N o t U se d

N o t U se d

N o t U se d

S H U T do w n S u m m a ry

L oca l L o ck

C u rren t S h a re S u m m a ry

C o n sta n t C urre n t M o d e

C o n sta n t V o lta g e M o de

P R O G ram R u n n in g

N o t U se d

8

9

1 0

5

6

7

1 1

1 2

1 3

1 4

1 5

0

1

2

3

4

+

N e ve r U se d

T o S ta tu s

B yte B it 7

5

M370078-01 5-35

Remote Operation

10

11

12

13

14

Table 5-11 OPERation Status Register

Bit

6

7

4

5

8

9

2

3

0

1


16

32

64

128

4

8

1

2

256

512

1024

2048

4096

8192

16384

Description

CALibrating

SETTling

RANGing

SWEeping

MEASuring

Waiting for Arm

Waiting for Trigger

CORRecting

Not Used

SHUTdown Summary

Indicates that the supply is in CALibration Mode.

Not implemented

Not implemented

Not implemented

Not implemented

Not implemented

Not implemented

Not implemented

Not Used

Reflects the summary of the SHUTdown Sub-

Register.

Local Lockout Front panel lockout

Current Share Summary Reflects the summary of the CSHare Sub-Register.

Constant Voltage Mode Reflects the output mode of the supply.

Constant Current Mode Reflects the output mode of the supply.

Program Running Indicates if an Autosequence program is currently running.

The operation shutdown status register describes the cause of the power supply shutting down the output. More than one bit may be active and multiple actions will be required to restart the unit. The protection shutdown sub-register indicates which protection mechanisms have caused the power supply to shutdown.

5-36 M370078-01


Table 5-12 OPERation SHUTdown Status Register

1

2

3

Bit

0

2

4

8


1 PROTection

INTerlock

Not Used

External Shutdown

Description

Reflects the summary of the PROTection subregister.

The power supply is shut down by INTerlock signal.

Not Used

The power supply is shut down by External

Shutdown signal.

Table 5-13 OPERation SHUTdown PROTection Status Register

Bit

6

7

4

5

8

2

3

0

1


16

32

64

128

256

4

8

1

2

OVP

UVP

OCP

Not Used

AC Off

OTP

Not Used

Foldback

Fan

Description

Over Voltage protection has tripped.

Under Voltage protection has tripped.

Over Current protection has tripped.

Not Used

AC failure protection has tripped.

Over Temperature protection has tripped.

Not Used

Foldback protection has tripped.

Fan failure protection has tripped.

5

M370078-01 5-37

Remote Operation

Current SHare Sub-Register

This register shows the state of the current share configuration, which can either be set through the front panel Current Share Config menu, or through the SCPI command.


[[:]SOURce]:COMBine:CSHare[:MODE]

Table 5-14 OPERation CSHare Status Register

Bit

0

Bit Weight

Bit Name

1 MASTer

1 2 SLAVe

Description

The power supply is configured to be a Current

Share Master.

The power supply is configured to be a Current

Share Slave.

5-38 M370078-01


Operation Status Register Commands

The response format for all register queries will be in decimal notation.

Query Operation Status Register Event

SCPI command:

[:]STATus[<channel>]:OPERation[:EVENt]?

Query Operation Status Register Condition

SCPI command:

[:]STATus[<channel>]:OPERation:CONDition?

Enable Operation Status Register

SCPI command:

[:]STATus[<channel>]:OPERation:ENABle <status-enable>

Query Format:

[:]STATus[<channel>]:OPERation:ENABle?

Set Operation Status Positive Transition Filter

SCPI command:

[:]STATus[<channel>]:OPERation:PTRansition <statusenable>

Query Format:

[:]STATus[<channel>]:OPERation:PTRansition?

Set Operation Status Negative Transition Filter

SCPI command:

[:]STATus[<channel>]:OPERation:NTRansition <statusenable>

Query Format:

[:]STATus[<channel>]:OPERation:NTRansition?

M370078-01 5-39

5

Remote Operation

Current Sharing Sub-Register Commands

Query Current Share Event

SCPI command:

[:]STATus[<channel>]:OPERation:CSHare[:EVENt]?

Query Current Share Condition

SCPI command:

[:]STATus[<channel>]:OPERation:CSHare:CONDition?

Enable Current Share Sub-Register

SCPI command:

[:]STATus[<channel>]:OPERation: CSHare:ENABle

<statusenable>

Query format:

[:]STATus[<channel>]:OPERation:CSHare:ENABle?

Set Current Share Positive Transition Filter

SCPI command:

[:]STATus[<channel>]:OPERation:CSHare:PTRansition

<status-enable>

Query format:

[:]STATus[<channel>]:OPERation:CSHare:PTRansition?

Set Current Share Negative Transition Filter

SCPI command:

[:]STATus[<channel>]:OPERation:CSHare:NTRansition

<status-enable>

Query format:

[:]STATus[<channel>]:OPERation:CSHare:NTRansition?

5-40 M370078-01


Shutdown Sub-Register Commands

Query Shutdown Event

SCPI command:

[:]STATus[<channel>]:OPERation:SHUTdown[:EVENt]?

Query Shutdown Condition

SCPI command:

[:]STATus[<channel>]:OPERation:SHUTdown:CONDition?

Enable Shutdown Sub-Register

SCPI command:

[:]STATus[<channel>]:OPERation: SHUTdown:ENABle <statusenable>

Query format:

[:]STATus[<channel>]:OPERation:SHUTdown:ENABle?

Set Shutdown Positive Transition Filter

SCPI command:

[:]STATus[<channel>]:OPERation:SHUTdown:PTRansition

<status-enable>

Query format:

[:]STATus[<channel>]:OPERation:SHUTdown:PTRansition?

Set Shutdown Negative Transition Filter

SCPI command:

[:]STATus[<channel>]:OPERation:SHUTdown:NTRansition

<status-enable>

Query format:

[:]STATus[<channel>]:OPERation:SHUTdown:NTRansition?

M370078-01 5-41

5

Remote Operation

Protection Sub-Register Commands

Query Protection Event

SCPI command:

[:]STATus[<channel>]:OPERation:SHUTdown:PROTection[:EVENt]?

Query Protection Condition

SCPI command:

[:]STATus[<channel>]:OPERation:SHUTdown:PROTection:CONDition?

Enable Protection Sub-Register

SCPI command:

[:]STATus[<channel>]:OPERation: SHUTdown:PROTection:ENABle

<status-enable>

Query format:

[:]STATus[<channel>]:OPERation:SHUTdown:PROTection:ENABle?

Set Protection Positive Transition Filter

SCPI command:

[:]STATus[<channel>]:OPERation:SHUTdown:PROTection:PTRansition

<stats-enable>

Query format:

[:]STATus[<channel>]:OPERation:SHUTdown:PROTection:PTRansition?

Set Protection Negative Transition Filter

SCPI command:

[:]STATus[<channel>]:OPERation:SHUTdown:PROTection:NTRansition

<status-enable>

Query format:

[:]STATus[<channel>]:OPERation:SHUTdown:PROTection:NTRansition?

5-42 M370078-01

QUEStionable Status Register

QUEStionable Status Register

The Questionable Status register is a standard SCPI, 16-bit register that stores information about questionable events or status during power supply operation. That is, bits in these registers may indicate that the output of the supply is of undesirable or questionable quality.

The Questionable Status data structure consists of a questionable status register and two sub-registers representing the status of the voltage outputs and temperature.

Figure 5-21 gives an overview of the Questionable Status data structure.

The “+” represents the logical summation of bits in a register. Table 5-15

Table 5-16, and Table 5-17 describe the meanings of each bit as well as

the bit number and bit weight.

5

M370078-01 5-43

Remote Operation

STATus:QUEStionable:VOLTage



Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

8

9

10

11

12

13

14

6

7

4

5

2

3

0

1

15

+

Never Used

STATus:QUEStionable:TEMPerature


Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

0

9

10

11

12

13

14

15

7

8

5

6

3

4

1

2

+

Never Used

Figure 5-21 SCPI QUEStionable Registers Fanout

STATus:QUEStionable

VOLTage

Not Used

Not Used

Not Used

TEMPerature

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

6

7

4

5

2

3

0

1

8

9

10

11

12

13

14

15

+

Never Used

To Status

Byte Bit 3

5-44 M370078-01


Table 5-15 QUEStionable Status Register

Bit

12

13

14

15

8

9

10

11

6

7

4

5

2

3

0

1


256

512

1024

2048

4096

8192

16384

32768

16

32

64

128

4

8

1

2

VOLTage

CURRent

TIME

POWer

TEMPerature

FREQuency

PHASe

MODulation

CALibration

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Description

Summary of Voltage Register

Not Implemented

Not Implemented

Not Implemented

Summary of Temperature Register

Not Implemented

Not Implemented

Not Implemented

Not Implemented

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

5

M370078-01 5-45

Remote Operation

VOLTage Sub-Register

This shows whether the present voltage level is over or under the specified trip limit.

Table 5-16 QUEStionable VOLTage Status Register

Bit

Bit Weight

Bit Name Description

0

1

1

2

OVP

UVP


Under Voltage Protection

TEMPerature Sub-Register

This shows whether the temperature of critical components is near or over the maximum operating temperature.

Table 5-17 QUEStionable TEMPerature Status Register

Bit

0


1 OTP

Description


5-46 M370078-01


Questionable Status Register Commands

Query Questionable Status Register Event

SCPI command:

[:]STATus[<channel>]:QUEStionable[:EVENt]?

Query Questionable Status Register Condition

SCPI command:

[:]STATus[<channel>]:QUEStionable:CONDition?

Enable Questionable Status Register

SCPI command:

[:]STATus[<channel>]:QUEStionable:ENABle <status-enable>

Query Format:

[:]STATus[<channel>]:QUEStionable:ENABle?

Set Questionable Status Positive Transition Filter

SCPI command:

[:]STATus[<channel>]:QUEStionable:PTRansition <statusenable>

Query Format:

[:]STATus[<channel>]:QUEStionable:PTRansition?

Set Questionable Status Negative Transition Filter

SCPI command:

[:]STATus[<channel>]:QUEStionable:NTRansition <statusenable>

Query Format:

[:]STATus[<channel>]:QUEStionable:NTRansition?

5

M370078-01 5-47

Remote Operation

Voltage Status Register Commands

Query Voltage Status Register Event

SCPI command:

[:]STATus[<channel>]:QUEStionable:VOLTage[:EVENt]?

Query Voltage Status Register Condition

SCPI command:

[:]STATus[<channel>]:QUEStionable:VOLTage:CONDition?

Enable Voltage Status Register

SCPI command:

[:]STATus[<channel>]:QUEStionable:VOLTage:ENABle

<status-enable>

Query Format:

[:]STATus[<channel>]:QUEStionable:VOLTage:ENABle?

Set Voltage Status Positive Transition Filter

SCPI command:

[:]STATus[<channel>]:QUEStionable:VOLTage:PTRansition

<status-enable>

Query Format:

[:]STATus[<channel>]:QUEStionable:VOLTage:PTRansition?

Set Voltage Status Negative Transition Filter

SCPI command:

[:]STATus[<channel>]:QUEStionable:VOLTage:NTRansition

<status-enable>

Query Format:

[:]STATus[<channel>]:QUEStionable:VOLTage:NTRansition?

5-48 M370078-01


Temperature Status Register Commands

Query Temperature Status Register Event

SCPI command:

[:]STATus[<channel>]:QUEStionable:VOLTage:TEMPerature

[:EVENt]?

Query Temperature Status Register Condition

SCPI command:


:CONDition?

Enable Temperature Status Register

SCPI command:


:ENABle <status-enable>

Query Format:


:ENABle?

Set Temperature Status Positive Transition Filter

SCPI command:


:PTRansition <status-enable>

Query Format:


:PTRansition?

Set Temperature Status Negative Transition Filter

M370078-01

SCPI command:


:NTRansition <status-enable>

Query Format:


:NTRansition?

5-49

5

Remote Operation

SCPI Error/Event Queue

The error/event queue contains items that include a numerical and textual description of the error or event. Querying for the full queue item (for example, with SYSTem:ERRor[:NEXT]?) will return a response with the following syntax:

<Error/Event Number>, "<Error/Event

Description>;<Optional Device Dependent Info>"

The <Error/event_number> is a unique integer in the range [-32768,

32767]. All positive numbers are instrument-dependent. All negative numbers are reserved by the SCPI standard with certain standard error/ event codes described in the SCPI 1999 standard document. The value, zero, is also reserved to indicate that no error or event has occurred.

The second parameter of the full response is a quoted string containing an

<Error/event_description> followed by optional <Device-dependent info> text. Each <Error/event_number> has a unique and fixed <Error/ event_description> associated with it.

The maximum string length of <Error/event_description> plus <Devicedependent_info> is 255 characters.

As errors and events are detected, they are placed in a queue. This queue is first in, first out. If the queue overflows, the last error/event in the queue is replaced with error:

-350,"Queue overflow

Any time the queue overflows, the least recent errors/events remain in the queue, and the most recent error/event is discarded. The error queue implemented in the XG is capable of holding 4 errors.

When the error queue is not empty the error queue bit in the Status register will be set.

Querying For the Errors

Executing a query of the event queue will respond with the oldest error currently on the queue. This error is removed. The response format is discussed in the error/event queue description section.

Command:

[:]SYSTem:ERRor[:EVENt]?

5-50 M370078-01

SCPI Error/Event Queue

Examples:

SYST:ERR?

SYST:ERR:EVENT?

Responses might be:

-102, "syntax error;”

0, "No Error;"

Querying For the Error Code Only

It is possible to query for only the error code. When querying the error code only the response will be the numeric error code only, no additional description will be given. The error queried will be removed from the queue.

Command:

[:]SYSTem:ERRor:CODE[:EVENt]?

Example:

:SYST:ERR:CODE?

SYST:ERR:CODE:EVENT?

Responses might be:

-102

0

Querying For the Number of Errors in the Queue

To query the device for the number of errors currently stored in the error queue you should use the following command.

Command:

[:]SYSTem:ERRor:COUNt?

Example:

:SYST:ERR:COUN?

Response might be:

3

5

M370078-01 5-51

Remote Operation

Reset Command

The Reset command performs a device reset. The Reset command is the third level of reset in a three level reset strategy, set out in IEEE 488.2

(see IEEE 488.2 standard, section 17.1.2).

The Reset command shall do the following:

1. Set the device-specific functions to a known state that is independent of the past-use history of the device. See Table 3-9, “Power Supply

Default Settings” on page 3–39 for details.

2. Force the device into the OCIS state, (see IEEE 488.2 standard, section 12.5.2).

3. Force the device into the OQIS state, (see IEEE 488.2 standard, section 12.5.3).

The reset command explicitly shall NOT affect the following:

1. The state of the IEEE 488.1 interface.

2. The selected IEEE 488.1 address of the device.

3. The Output Queue.

4. The Standard Status Register Enable setting.

5. The Standard Event Status Enable (SESR) setting.

6. The Operation and Questionable SCPI status registers and their fan out registers.

7. Calibration data that affects device specifications.

8. The Protected User Data query response.

Commands:

*RST

[:]SYSTem[<channel>]:RESet

5-52 M370078-01


Clear All Status Registers

Clear Status Command

Clears all Event Registers, including the Status Byte, the Standard Event

Status and the Error Queue.

Command:

*CLS

[:]STATus[<channel>]:CLEar

5

M370078-01 5-53

Remote Operation

SCPI Preset Status

Configures the status data structures to ensure that certain events are reported at a higher level through the status-reporting mechanism. These events are summarized in the mandatory structures, the Operation Status

Register and Questionable Status Register.

The PRESet command affects only the enable registers and the transition filter registers of the status data structures. PRESet does not clear any of the event registers or any item from the error/event queue. The *CLS command is used to clear all event registers and queues in the device status-reporting mechanism.

For the device-dependent status data structures, the PRESet command sets the enable register to all 1s and the transition filter register to report only positive transitions. For the SCPI mandatory status data structures, the PRESet command sets the transition filter registers to recognize only positive transitions and sets the enable register to 0s. The following will not be affected by this command: Service Request Enable Register,

Parallel Poll Enable Register, the memory register associated with the

*SAV

command, the power supply address, Output Queue, and the power-on-status-clear flag setting.

Table 5-18 Preset Values of User Configurable Registers

Register Filter/Enable Preset Value

Operational

Questionable

All others

Operational Enable Register

Positive Transition Filter

Negative Transition Filter

Questionable Enable Register



All other Enable Register



0

1

0

1

1

1

0

1

0

SCPI command:

[:]STATus[<channel>]:PRESet

5-54 M370078-01


Command Line Help System

The Help system is made up of a series of commands that can be used to get help on all available commands and details on their syntax.

The Help commands are:

[:]SYSTem[<channel>]:HELP[:HEADers]?

[:]SYSTem[<channel>]:HELP:SYNTax?'<command for which you want help>'

[:]SYSTem[<channel>]:HELP:LEGacy?

Querying Help for all Command Headers

The [:]SYSTem[<channel>]:HELP[:HEADers]? query shall return all SCPI commands and queries and IEEE 488.2 common commands and common queries implemented. No single line will be longer than 80 characters long. The full path for every command and query shall be returned separated by line feeds.

A <SCPI header> is defined as:

It shall contain all the nodes from the root. The <SCPI program mnemonic> contains the node in standard SCPI format. The short form shall use uppercase characters while the additional characters for the long form shall be in lowercase characters. Default nodes shall be surrounded by square brackets ([ ]).

Command:


For example:

:SYST1:HELP:HEAD?

Might return:

*IDN?/qonly/

*RST/nquery/

*TST?/qonly/

*OPC/nquery/

*OPC?/qonly/

*WAI/nquery/

*CLS/nquery/

*ESE

5

M370078-01 5-55

Remote Operation

*ESR?/qonly/

*SRE

*SRE?/qonly/

*STB?/qonly/

*SAV

*RCL

*TRG/nquery/

*ADR

*HELP?/qonly/

*ERR?/qonly/

[:]SYSTem:PROTection[:MASK]

[:]SYSTem:ERRor[:NEXT]?/qonly/

[:]SYSTem:ERRor:CODE[:NEXT]?/qonly/

[:]SYSTem:ERRor:COUNt?/qonly/

…

[:]OUTPut:PROTection:FOLDback[:MODE]

[:]OUTPut:PROTection:FOLDback:

[:]OUTPut:POLarity

[:]OUTPut[:POWer][:STATe]

[:]OUTPut[:POWer]:PON[:STATe]

[:]OUTPut:AUXilliary[:STATe]

[:]OUTPut:AUXilliary:PON[:STATe]

[:]MEASure[:SCALar][:VOLTage][:DC]?/qonly/

[:]MEASure[:SCALar]:CURRent[:DC]?/qonly/

[:]MEASure[:SCALar]:APRogram[:VOLTage][:DC]?/qonly/

[:]MEASure[:SCALar]:APRogram[:VOLTage]:ISOLated[:DC]?/ qonly/

[:]MEASure[:SCALar]:APRogram:CURRent[:DC]?/qonly/

[:]MEASure[:SCALar]:APRogram:CURRent:ISOLated[:DC]?/qonly/

[:]INITiate:IMMediate/nquery/

[:]CALibration:RESTore/nquery/

[:]CALibration[:VOLTage]:PROTection[:OVER][:DATA]/nquery/

[:]CALibration:OUTPut[:VOLTage][:DATA]/nquery/

[:]CALibration:OUTPut:CURRent[:DATA]/nquery/

[:]CALibration:OUTPut:ANALog[:VOLTage][:DATA]/nquery/

[:]CALibration:OUTPut:ANALog[:VOLTage]:ISOLated[:DATA]/ nquery/

5-56 M370078-01


Querying Help for Legacy Command Headers

The [:]SYSTem[<channel>]:HELP:LEgacy? query is essentially the same as the


command, but it lists legacy commands. If executed it returns all legacy commands and queries implemented. The response shall be on a page by page basis. No single line will be longer than 80 characters and each page will be 23 lines long. The full path for every command and query shall be returned separated by line feeds. After a full page of headers has been displayed you will be prompted to press any key to continue or the ESC key to stop any further listing of the command headers.

Command:


For example:

:SYST2:HELP:LEG?

Might return:

AUX

OUT

ERR?/qonly/

CLR/nquery/

FOLD

DLY

VSET

ISET

TRG/nquery/

OVP

UVP

HELP?/qonly/

HLP?/qonly/

5

M370078-01 5-57

Remote Operation

Querying Help for Command Syntax

The SYSTem[<channel>]:HELP:SYNTax? query causes the device to return a string containing the syntax specification of the command associated with the <command_header>, a description of the command function and any aliases to the command. Each line of the response is tabbed to the right for readability.

Any <command_header> that is not a valid command header being recognized by the device, shall cause the device to return a null string

(""). E.g. if the <command_header> contains only a part of the header, contains an illegal numeric suffix, etc.

The response shall have the following format:

<Description of command>

<command header> <Command parameters

Alias: <list of command that perform the same function>

Command:

[:]SYSTem[<channel>]:HELP:SYNTax? {<string command>}

Where:

<string command> is the command to look up the syntax help on.

The following examples demonstrate how to use the syntax help command.

Example 1:

:SYST:HELP:SYNT? '*ADR'

Gets the response:

Select the PSU (power supply) to communicate with

*ADR ?|<NR1>

Aliases: :SYSTem:COMMunicate[:SELF]:ADDRess

Example 2:

:SYST:HELP:SYNTAX? "INIT:IMM"

Gets the response:

Triggers the Autosequence Program

[:]INITiate:IMMediate

Aliases: *TRG

5-58 M370078-01

M370078-01


Example 3:

:SYST:HELP:SYNT? ':VOLT'

Gets the response:

Set Voltage Setpoint (Immediate)

[[:]SOURce]:VOLTage[:LEVel][:IMMediate][:AMPLitude]

?|<NR2>|MAXimum|MINimum

Aliases:

5-59

5

Remote Operation

Locking and Unlocking the Front Panel

Locking out the front panel will prevent any of the buttons from functioning. All the buttons and knobs on the front panel will display the

LOCL Loc message to be display on the Current and Voltage displays if pressed or rotated. This mode prevents any changes to the unit from the front panel. See the following procedure to lock and unlock the front panel.


[:]SYSTem[<channel>]:REMote:STATe {?|LOCal|REMote}

Where:

LOCal is used to set the front panel mode to local.

REMote is used to set the front panel into locked mode (remote).

For example:

SYST:REM:STAT REM

Front panel is locked (remote digital programming mode only).

SYST:REM:STAT LOC

Front panel is unlocked.

SYST:REM:STAT?

Query for status

Auto Sequence Programming

Auto Sequence programming lets you execute a program stored in the power supply’s memory. The program that can be stored in memory can be composed of any of the SCPI commands described in this Manual.

For example, Auto Sequence programming allows you to set the timer to turn the power output of the supply Off or On after a time interval or to program voltage sequences.

When a program is activated each command stored in the buffer is executed as if the operator had sent the command by typing it in. A variable delay time called dwell is spent between commands. The dwell

time can range from 0 seconds to 180 seconds. See “Setting Dwell Time” on page 5–61.

The Auto Sequence program will be cleared after AC power is turned off; however, a procedure exists for storing it in a text file which can be reloaded at a later date.

5-60 M370078-01

Locking and Unlocking the Front Panel

Setting Dwell Time

The dwell time is the amount of time that is delayed between each command during the execution of an Auto Sequence program. The dwell time can be from 0 to 180 seconds and can be changed during the program execution. The dwell time has a minimum step size of 1 second.

Command:

[:]PROGram[<channel>][:STEP]:DWELl {?|<dwell time> }

Where:

<dwell time > is an integer value from 0 to 180.

For Example:

:PROG:DWEL 12 Results in 12 seconds of wait time after each command is executed.

Storing an Auto Sequence Program:

Loading a program into memory is done by using the

[:]PROGram[<channel>][:RECord]:STARt

command. After the start command has been issued, the XG will record all subsequent commands into the auto sequence program buffer. The commands will be recorded into the buffer until the

:PROGram[<channel>][:RECord]:STOP

command is issued.

Commands:


[:]PROGram[<channel>][:RECord]:STOP

Important:

If the start recording command is executed then any previously stored Auto Sequence program is deleted.

For example:

:PROG:STAR

:VOLT 12

:OUTP ON

:PROG:DWEL 60

:OUTP OFF

:OUTP ON

:OUTP OFF

M370078-01 5-61

5

Remote Operation

:PROG:DWEL 0

:PROG:STOP

This program will send a 12 V square wave with 120 seconds 50% duty cycle. When the program is finished, the dwell time is restored to 0 seconds.

Saving an Auto Sequence Program to File:

The following procedure indicates how to save an Auto Sequence program to a text file on the attached PC.

To save an Auto Sequence Program to a file:

1. Start the text capture by selecting Transfer>Capture Text … from the Hyper Terminal program.

2. Set the location and name of the auto sequence to be captured.

3. Click the Start button.

4. Execute a program read back by sending:

:PROG[<channel>]:READ?

5. Stop the text capture by selecting Transfer>Capture Text>Stop from the Hyper Terminal program.

6. Using any text editor open the file which you captured the Auto

Sequence program to.

7. Remove the first line which should read

":PROG[<channel>]:READ?" and the first blank line. This makes the first line of the program the first line of the file.

8. Save the file and exit the text editor.

The Auto Sequence program has not been stored and can be sent to

any unit. See “Reloading an Auto Sequence Program:” on page 5–63

for details.

Readback and Troubleshooting an Auto Sequence Program:

Since the Auto Sequence programming function records the commands at program time without verifying the syntax, it can be difficult to spot an error in the sequence, for example, if a typo was made when entering a command during the record phase. A readback command has been provided to output the stored auto sequence program currently in memory.

5-62 M370078-01


Another benefit to the readback command is it allows the auto sequence program to be captured and stored on the client side for reloading when the program is to persist beyond power cycles.

Command:

[:]PROGram[<channel>]:READback?

For Example:

:PROG:START

*CLS

:VOLT 5.4

:CURR 0.25

*IDN?

:PROG:STOP

:PROG:READ?

Response:

*CLS

:VOLT 5.4

:CURR 0.25

*IDN?

:PROG:STOP

Reloading an Auto Sequence Program:

The following procedure will demonstrate how to store a command beyond a power cycle of the unit.

Important:

This functionality is only available through USB, RS-232 and

RS-485. It is not possible to reload an auto sequence program over the GPIB and

ENET cards.

To reload Auto Sequence program from file:

1. Set the data rate of the device to be 1200 bps.

2. Close the connection to the hyperterminal program and configure the connection data rate to be 1200 bps.

3. Execute the program recording command:

:PROG:START

5

M370078-01 5-63

Remote Operation

4. From the Hyper Terminal (or any other terminal program) select the

Transfer>Send Text File…

5. Navigate to and select the text file that was previously stored. Click the Open button.

6. Execute the program recording stop command:

:PROG:STOP

7. Execute the readback command to verify the entire program was transferred correctly:

PROG:READ?

8. Set the data rate back to the original speed.

9. Close the connection to the HyperTerminal program and configure the connection data rate to be the original speed.

Running an Auto Sequence Program:

Once an auto sequence program has been stored, there are a few commands that can be used to run the program. Once a program begins running, it will continue running until completion and then repeat the number of times specified by the repeat command. The default at power on is to have repeat set to 1.

Commands:

*TRG

[:]INITiate[<channel>][:IMMediate]

[:]PROGram[<channel>]:STATe {?|RUN|STOP|PAUSe}

Where:

RUN

causes the program to begin execution.

STOP

causes the program to stop execution

PAUSe causes the program to stop executing at the current command. If a subsequent run is sent, the program will resume executing with the next command in the program.

For Example:

:PROG:STAR

*IDN?

*IDN?

:PROG:STOP

5-64 M370078-01


:PROG:STAT RUN

The output after the last command might be as follows:

AMETEK, XG 150-5.6, SN# E00123456, 1.00 Build 10, 21/

11/2005


11/2005

Important:

Execution of the program may be terminated at any time by pressing the Esc key in the MS Windows Hyper Terminal window. The power supply can be controlled during program execution.

Deleting an Auto Sequence Program:

It is possible to delete the current Auto Sequence Program using the SCPI noted below.

Command:

[:]PROGram[<channel>]:DELete[:ALL]

Repeating an Auto Sequence Program:

An Auto Sequence Program can be configured to repeat any number of times or infinitely. The default at power up is to have the repeat count default to once. The program will repeat if the repeat count can be changed using the :PROGram[<channel>]:REPeat command. If a program is running or pause the :PROGram[<channel>]:REPeat command will not work.

Commands:

[:]PROGram[<channel>]:REPeat {?|<count>|INFinity}

Where:

<count> is the repeated count from 1 to 65 534.

INFinity is the character mnemonic for repeating without end.

For Example:

:PROG:STAR

*IDN?

*IDN?

:PROG:STOP

5

M370078-01 5-65

Remote Operation

:PROG:REP 2

:PROG:STAT RUN

The output after the last command might be as follows:


11/2005


11/2005


11/2005


11/2005

5-66 M370078-01

Configure Other Protection Mechanisms

Configure Other Protection Mechanisms

Foldback Protection

Foldback protection causes the output of the power supply to shut down if the selected regulation mode is entered and the configured delay time expires. A delay time may be specified as well. The only way to clear foldback is by pressing the rotary Adjust/Enter control for 3 seconds and executing the Clear command.

Command:


Setting the Foldback Mode

The following command will set the foldback mode. The mode selected by the character mnemonic sent will indicate which mode will trigger the foldback alarm to begin counting. For example, if the command is sent with the CV mnemonic and the output is enabled with no load attached

(open circuit), the unit will operate in constant voltage mode and the foldback counter will begin counting. If the CC mode was set and the output was enabled with no load connected, the unit will operate in CV mode and the foldback counter will not trigger.

To set the foldback mode, send the command:

Command:

[:]OUTPut[<channel>]:PROTection:FOLDback {?|CC|CV|NONE}

Where:

NONE indicates foldback protection is disabled.

CC indicates the supply will shut down due to constant current condition.

CV indicates the supply will shut down due to constant voltage.

The default value is NONE.

To set the foldback delay, send the command:

M370078-01

Command:

[:]OUTPut[<channel>]:PROTection:FOLDback:DELay

<delay_time>

Where:

<delay_time> is a value in the range of 0.5-50 seconds. The unit of second is the default and no units should be used with this parameter.

(Increments of 0.1seconds are allowed.).

The default value is 0.5 seconds.

5-67

5

Remote Operation

Over Temperature Protection

The over temperature protection (OTP) is the alarm that protects the unit in case of ventilation blockage, fan failure, or some other event that cause the unit to overheat. The OTP can be masked to disable it. To mask an alarm, see “Alarm Masking” on page 3–21 which maps out the bit position for each of the flags.

The alarm masking command can be entered using the SCPI command.



[:]SYSTem[<channel(s)>]:PROTection:MASK

The OTP alarm can also be have its output latch on clearing. See “Alarm

Output Latching” on page 3–22. The On setting shown by the front panel

(“Using Over Temperature Protection Lock (OTP)” on page 3–29) maps to having the OTP latch flag set. The OFF setting maps to having the OTP latch flag cleared. The default is to have the flag cleared.

Interlock Enable/Disable

The interlock feature is explained in “Interlock Function” on page 3–32.

Use the following command to enable and disable interlock. Enabling interlock will allow the interlock feature to trigger based on the conditions described in “Interlock Function” on page 3–32. This feature can only be controlled using a SCPI command as there is no front panel equivalent.

The default value of the interlock is to be disabled.

Important:

The Interlock alarm cannot be masked or latched through the alarm protection mechanisms. It can only be enabled or disabled using the following command.

Commands:

[:]SENSe[<channel>]:INTerlock[:STATe] {?|ON|OFF}

Where

ON enables the use of interlock protection.

OFF disables the use of interlock protection.

5-68 M370078-01


Save and Recall

The save and recall of user settings can be done using commands as well as at the front panel. Executing the save and recall commands will have the same outcome as following the procedure outlined in “Saving User

Setting Memory Locations” on page 3–35 and “Recalling User Setting

Memory Locations” on page 3–36.

Commands:

[:]SYSTem[<channel>]:SAVE {<user settings slot>}

[:]SYSTem[<channel>]:RECall {<user settings slot>}

Where

<user settings slot> is any integer between 1 and 3. The value corresponds to you the setting to be operated on.

Set Analog Programming Level

Setting the analog programming level is used to define the range from 0 to the level that will be input into the analog programming lines to control the output. The command is equivalent to the procedure described in

“Analog Programming Mode” on page 4–9.

Commands:


[:VOLTage][:ISOLated] {?|<level>}


[:VOLTage] {?|<level>}


:CURRent[:ISOLated] {?|<level>}


:CURRent {?|<level>}

Where

<level> is the maximum voltage or resistance that will be input to the analog inputs.The acceptable range is from 2 to 10 V and 2 to 10k

Ω.

5

M370078-01 5-69

Remote Operation

Set Remote Programming Interface

The remote source can be select using the following SCPI commands.

These commands are equivalent to the procedure on “Voltage-Controlled

Voltage APG Setup” on page 4–10 and “Voltage-Controlled Current APG

Setup” on page 4–12.

Commands:

[:]SYSTem[<channel>]:REMote:SOURce[:VOLTage]

{?|LOCal|AVOLtage|ARESistive}

[:]SYSTem[<channel>]:REMote:SOURce:CURRent

{?|LOCal|AVOLtage|ARESistive}

Where:

LOCal indicates the value is controlled by the set point.

AVOLtage is used to set the output to be controlled by an analog voltage input.

ARESistive is used to set the output to be controlled by a resistor circuit.

IAVoltage is used to set the output to be controlled by the isolated analog voltage input.

IAResistive is used to set the output to be controlled by the isolated analog resistor circuit.

5-70 M370078-01


Protection Mask (Enable Alarms)

The protection mask allows for the different alarms to be masked, completely disabling them. This means that the SCPI status and operations registers will not detect the alarms. You will have no way of knowing the current operation state of the alarm. The protection mask is a feature that is only accessible using the SCPI command noted below.

Command:

[:]SYSTem[<channel>]:PROTection[:MASK] {?|<mask>}

Where

<mask> is the bit mask for disabling the alarms. See Table 5-19 for

details.

Table 5-19 Alarms Bit Mask

Bit Bit Weight Bit Name

5

6

3

4

0

1

2

7

8

9

10

8

16

32

64

1

2

4

128

256

512

1024

AC Fail

OTP

N/A

Fan Stop

N/A

Interlock

OVP

OCP

Foldback

Shutdown

UVP

Description

Not used. Always 1.

Over Temperature protection.

Not used.

Fan on the main board.

Not used.

Not used. Always 1.

Not used. Always 1.

Not used. Always 1.

Foldback protection.

External Shutdown pin

Under Voltage protection.

See “Alarms and Errors” on page 3–18.

5

M370078-01 5-71

5-72

6

Calibration and

Troubleshooting

Chapter 6, Calibration and Troubleshooting, contains

information and procedures for calibrating and troubleshooting the power supply.

Calibration and Troubleshooting

Introduction

The calibration of the power supply is software dependent, and there are no potentiometers to adjust.

Calibration is performed via SCPI commands.

The following items need to be calibrated:

• Programmed voltage

• Voltage readback

• Programmed current

• Current readback

• Non-isolated voltage monitoring

• Isolated voltage monitoring

• Non-isolated current monitoring

• Isolated current monitoring

• Isolated source for analog programming

• Non-isolated source for analog programming

• Over voltage protection system


Calibration procedures should only be performed by qualified user.

6-2 M370078-01


Main Voltage and Current Calibration Principle

Understanding the Problem

Figure 6-1 illustrates two sources of analog programming error: gain error

and offset error. Gain error is the departure from the ideal slope of the measured versus programmed line. Offset error is the magnitude of the measured value when the programmed value is zero.

For best results, the next recommended action is gain calibration for 90% of maximum value and offset calibration for 10% of maximum value.

Perform gain calibration again.

Idea l

Re al

Gain Error

Offset Error

Programmed Value

Figure 6-1 Offset (Intercept) Error and Gain (Slope) Error

6

M370078-01 6-3


Step 1: Gain Calibration

Figure 6-2 Calibration: Step 1 Gain Calibration

Adjust the gain so that the real line and ideal line intersect at a programmed value of 90%.

Step 2: Offset Calibration

6-4

Figure 6-3 Calibration: Step 2 Offset Calibration

Adjust the offset so that the real and ideal lines intersect at a programmed value of 10%.

M370078-01

Step 3: Recalibrate Gain


Figure 6-4 Calibration: Step 3 Recalibrate Gain

Repeat Step 1 for best results.

M370078-01 6-5

6


Calibrating the Output Voltage

Gain calibration of the power supply has the greatest affect on the accuracy in the high voltage range. Offset calibration has the greatest affect on accuracy of the power supply at low voltages. The same calibration command is used for the gain and offset calibrations. The type of calibration is determined internally by the XG depending on if the set point is above 10% of the maximum output voltage value or not. If it is above 10% of the maximum voltage, the calibration is a gain calibration; if is below 10%, it is an offset calibration.

Gain Calibration

To perform gain calibration:

1. Disconnect the power supply from the load.

2. Connect the output terminals to a precision voltmeter.

3. Turn both the power supply and the voltmeter to On.

4. Set the current set point to maximum. Set the supply output to 90% of the nominal voltage level.

5. Turn on the output power.

6. Read the voltage value on voltmeter display.

7. Type the SCPI command with voltage value as parameter “data”.

For example, type :CAL:OUTP 138.3 if you had an XG 150-5.6 calibrating with the voltage set point set to 135 V and the voltmeter was reading 138.3 volts

Offset Calibration

To perform offset calibration:

1. After performing gain calibration, set the programmed voltage 10% from nominal.

2. Read the voltage value on the voltmeter display.

3. Type the SCPI command with voltage value as parameter “data”.

For example, you would type :CAL:OUTP12.3 if you had an XG

150-5.6 calibration with the voltage set point set to 10V and the voltmeter was reading 12.3 volts.

6-6 M370078-01


After performing offset calibration, it is recommended that you repeat gain calibration.

Important:

For best results, both calibrations may be repeated several times.

The SCPI Command (s) for these instructions are:

[:]CALibration[<channel>]:OUTPut{:VOLTage]{<voltmeter reading in volts>}

Calibrating the Output Current


To perform gain calibration:


2. Connect the output terminals to a load representing a short circuit using a precision ammeter.

3. Turn both the power supply and the load On.

4. Set the voltage set point to maximum. Set the supply output to 90% of the nominal current level.


6. The power supply starts up in Constant Current mode.

7. Read the current value on the ammeter display.

8. Type SCPI command with current value as parameter “data”.

For example, type :CAL:OUTP 5.07 if you had an XG 150-5.6 calibrating with the current set point set to 5.04 A and the ammeter was reading 5.07 amps.

6

M370078-01 6-7



Offset calibration of the power supply provides the best accuracy in lowrange current.


1. After performing gain calibration, set the current to 10% from the nominal.

2. Read the current value on the ammeter display.

3. Type SCPI command with the current value as parameter "data".

For example, you would type :CAL:OUTP:CURR 0.50 if you had an XG 150-5.6 calibrating with the current set point set to 0.56 A and the actual current measured was 0.50A.

After performing offset calibration, it is highly recommended that you repeat gain calibration.

Important:

For best results, both calibrations may be repeated several times.

To maintain the high current accuracy of the XG series of power supplies, user current calibration should only be done with a high accuracy calibrated shunt resistor of at least 0.025% tolerance.

SCPI Command

[:]

CALibration[<channel>]:OUTPut:CURRent{<ammeter reading in amps>}

6-8 M370078-01


Over Voltage Protection Calibration

Important:

The Voltage Calibration must be done before performing this procedure. If this is not done the OVP calibration will be inaccurate.

To calibrate the over voltage protection:

1. Turn on the power supply.

2. Select the VAP mode to be Off.

3. Set the voltage set point to be 90% of the model voltage and the current to be 10% of the model current.

4. Turn on the main power output.

5. Execute the OVP calibration SCPI command:

:CAL:PROT <output value set in step 3>

6. The power supply will enter into self-calibration mode. The output voltage display blinks OVP CAL. After several seconds, the calibration will complete and the display will return to normal operation with output off.

Calibration of the power supply is complete.

Important:

The output (main) voltage must be precalibrated.


[:]CALibration[:VOLTage]:PROTection[:OVER]

{<expected output value>}

6

M370078-01 6-9


Non-isolated Analog Programming Calibration

Prior to this, the main output must be calibrated first.

Important:

In calibration commands, when + or – keys are expected, any other key will exit from the calibration mode.

Non-isolated Voltage Monitoring Calibration

Important:

For maximum accuracy at a specific APG level. Follow the calibration procedure again but use the intended operating voltage level in steps 3 and 8.

To calibrate the non-isolated voltage monitoring:

1. Disconnect the load and connect the voltmeter to the output.

2. Connect the voltmeter to the non-isolated voltage monitoring output lines (J1.13 - J1.7).

3. Set the Voltage APG level to 4 V. Send the SCPI command:

SYST:COMM:APR:LEV 4

4. Set the input source as Local. Send the SCPI command:

SYST:REM:SOUR LOC

5. Set the main output voltage to 100% by sending the command:

SOUR:VOLT <ModelVolt> or use the rotary adjust/Enter control.

6. Turn the main output On by pressing the OUTPUT ENABLE Main button on the front panel or send the command:

:OUTP ON


7. Enter interactive calibration mode by sending the SCPI command:

CAL:MON

8. Press on the terminal keys – or + to reduce or increase monitoring value. Adjust the monitoring value displayed on the voltmeter that was set up in Step 1 to read as close as possible to 4.000 V.

9. Press any key other than the + or – keys to exit from interactive calibration mode.

6-10 M370078-01

Non-isolated Current Monitoring Calibration


Important:


To calibrate the non-isolated current monitoring:

1. Short the main output with a shunt. Connect a multimeter to measure the voltage across the shunt.

2. Connect the voltmeter to the non-isolated current monitoring output lines (J1.12 - J1.7).

3. Set the Current APG level to 4 V. Send the SCPI command:

SYST:COMM:APR:LEV:CURR 4

4. Set the input source as Local.

5. The SCPI command is:

SYST:REM:SOUR:CURR LOC

6. Set the main output voltage to 100% by sending the command



:OUTP ON


8. Enter interactive calibration mode by sending SCPI command:

CAL:MON:CURR

9. Press on the terminal keys – or + to reduce or increase the monitoring value. Adjust the monitoring value displayed on the voltmeter that was set up in Step 1 to read as close as possible to 4.000 V.


6

M370078-01 6-11


Non-isolated Voltage Programming of Voltage Calibration

Important:


To calibrate the non-isolated voltage programming of voltage:


2. Connect the input voltage source to the non-isolated connector, voltage programming (J1.9 - J1.7).

3. Set the Voltage APG level to 4 V. Send the SCPI command:

SYST:COMM:APR:LEV 4

4. Set input source voltage to 4.000 V.

5. Set the input source as Voltage Non-Isolated for Voltage

Programming. The SCPI command is:

SYST:REM:SOUR AVOL

6. Turn the main output to On by pressing the OUTPUT ENABLE Main button on the front panel or send the command:

:OUTP ON


7. Enter the interactive calibration mode by sending the SCPI command:

CAL:OUTP:ANAL

8. Press the terminal keys – or + to reduce or increase the main output voltage value. Adjust the main output voltage to 100%, measured on the external voltmeter on the output.


6-12 M370078-01


Non-isolated Resistive Programming of Voltage Calibration

Important:

For maximum accuracy at a specific APG level. Follow the calibration procedure again but use the intended operating resistance level in steps 2 and 3.

To calibrate the non-isolated resistive programming of voltage:


2. Connect the 4.000k

Ω resistor to the non-isolated connector, resistive programming of voltage, and voltage programming (J1.9-J1-11, and

J1.7).

3. Set the resistive APG level to 4k

Ω. The SCPI command is:

SYST:COMM:APR:LEV 4

4. Set the input source as Resistive Non-Isolated for Voltage


SYST:REM:SOUR ARES


:OUTP ON



CAL:OUTP:ANAL:RES

7. Press the terminal keys – or + to reduce or increase main output voltage value. Adjust the main output voltage to 100%.


6

M370078-01 6-13


Non-isolated Voltage Programming of Current Calibration

Important:


To calibrate the non-isolated voltage programming of current:


2. Connect the input voltage source to the non-isolated connector, current programming (J1.10 - J1.7).

3. Set the Voltage APG level to 4 V. The SCPI command is:


4. Set the input source voltage to 4.000 V.

5. Set the input source as Voltage Non-Isolated for Current. The SCPI command is:

SYST:REM:SOUR:CURR AVOL


:OUTP ON



CAL:OUTP:ANAL:CURR

8. Press the terminal keys – or + to reduce or increase the main output current value. Adjust the main output current to 100%.


6-14 M370078-01


Non-isolated Resistive Programming of Current Calibration

Important:

For maximum accuracy at a specific APG level. Follow the calibration procedure again but use the intended operating resistance level in steps 2 and 3.

To calibrate the non-isolated resistive programming of current:


2. Connect the 4.000 k

Ω resistor to the non-isolated connector (APG -

J1), one terminal to resistive programming of current (J1.12) and voltage programming of current (J1.10), and the other terminal to the common (J1.7).

3. Set the resistive APG level to 4 k



4. Set the input source as Resistive Non-Isolated for Current


SYST:REM:SOUR:CURR ARES


:OUTP ON



CAL:OUTP:ANAL:CURR:RES



6

M370078-01 6-15


Calibration Procedure for Isolated Modes

The main output and the non-isolated mode must be calibrated first.

Isolated Voltage Monitoring Calibration

Important:


To calibrate the isolated voltage monitoring:


2. Connect the voltmeter to the isolated voltage monitoring output lines

(J3.5 - J3.6).


SYST:COMM:APR:LEV 4

4. Set the input source to local for voltage analog programming. The

SCPI command is:

SYST:REM:SOUR LOC




:OUTP ON



CAL:MON:ISOL

8. Press the terminal keys – or + to reduce or increase the monitoring value. Adjust the monitoring value displayed on the voltmeter that was setup in Step 1 to read as close as possible to 4.000 V.


6-16 M370078-01


Isolated Current Monitoring Calibration

Important:


To calibrate the isolated current monitoring:


2. Connect the voltmeter to the Isolated monitoring output lines (J3.10 and J3.6).

3. Set the current APG level to 4 V. The SCPI command is:


4. Set the input source to local for voltage analog programming. the

SCPI command is:

SYST:REM:SOUR:CURR LOC


SOUR:VOLT <ModelVolt> or use the rotary Adjust/Enter control.


:OUTP ON



CAL:MON:CURR:ISOL

8. Press the terminal keys – or + to reduce or increase the monitoring value. Adjust the monitoring value displayed on the voltmeter that was set up in Step 1 to read as close as possible to 4.000 V.


6

M370078-01 6-17


Isolated Voltage Programming of Voltage Calibration

Important:

For maximum accuracy at a specific APG level. Follow the calibration procedure again but use the intended operating voltage level in step 3.

To calibrate the isolated voltage programming of voltage:


2. Connect the input voltage source to the Isolated connector (J3.3 and

J3.6).


SYST:COMM:APR:LEV 4


5. Set the input source as Voltage Isolated for Voltage. The SCPI command is:

SYST:REM:SOUR AVOL


:OUTP ON



CAL:OUTP:ANAL:ISOL

8. Press on the terminal keys – or + to reduce or increase the main output voltage value. Adjust the main output voltage to 100%.


6-18 M370078-01


Isolated Resistive Programming of Voltage Calibration

Important:

For maximum accuracy at a specific APG level. Follow the calibration procedure again but use the intended operating resistance level in step 3.

To calibrate the isolated resistive programming of voltage:



Ω resistor to the isolated connector. One terminal to resistive programming of voltage (J3.8), and voltage programming of voltage (J3.3), and the other to common (J3.2).

3. Set the resistive APG level to 4 k


SYST:COMM:APR:LEV 4

4. Set input source as Resistive Isolated for Voltage Programming. The

SCPI command is:

SYST:REM:SOUR IAR


:OUTP ON



CAL:OUTP:ANAL:RES:ISOL

7. Press on the terminal keys – or + to reduce or increase the main output voltage value. Adjust the main output voltage to 100%.

8. Press any key than the + or – keys to exit from interactive calibration mode.

6

M370078-01 6-19


Isolated Voltage Programming of Current Calibration

Important::

For maximum accuracy at a specific APG level. Follow the calibration procedure again but use the intended operating voltage level in step 3.

To calibrate the isolated voltage programming of current:


2. Connect the input voltage source to the Isolated connector (J3.4 -

J3.6).

3. Set the Current APG level to 4 V. The SCPI command is:



5. Set the input source as Voltage Isolated for Current. The SCPI command is:

SYST:REM:SOUR:CURR IAV


:OUTP ON



CAL:OUTP:ANAL:CURR:ISOL


9. Press any key other than the + or – keys to exit from the interactive calibration mode.

6-20 M370078-01


Isolated Resistive Programming of Current Calibration

To calibrate the isolated resistive programming of current:



Ω resistor to the isolated connector. One terminal to resistive programming of current (J3.7), and voltage programming of current (J3.3), and the other to common (J3.2).

3. Set the Resistive APG level to 4 k



4. Set the input source as Resistive Isolated for Current Programming.

The SCPI command is:

SYST:REM:SOUR:CURR IAR

5. Turn the main output On or send the command:

:OUTP ON


CAL:OUTP:ANAL:CURR:RES:ISOL


8. Press any key other than the + or – keys to exit from the interactive calibration mode.

6

M370078-01 6-21


Calibrating the Input Voltage APG Signal

The input voltage APG calibration is necessary to ensure accurate measurements when using the :MEAS:APR? and :MEAS:APR:ISOL? SCPI command queries to monitor the APG input signal.


To calibrate the VAP APG input gain:

1. Connect a voltmeter and a DC voltage source to the non-isolated voltage APG input lines (J1.9 and J1.7).


3. Set the Voltage APG level to 4 V.

Send the SCPI command:

SYST:COMM:APR:LEV 4

4. Set the input source as Voltage analog APG. Send the SCPI command:

SYST:REM:SOUR:VOLT AVOL

5. Set the voltage source attached to the non-isolated voltage APG input to 90% of the nominal voltage level, in this case 3.6 V.

6. Turn the output power on.

7. The power supply starts up in Constant Voltage mode.

8. Read the input voltage value from the voltmeter connected in step 1.

9. Type the SCPI input Voltage calibration command with voltage noted in step 8 as the parameter “data”.

For example, you would type :CAL:INP:ANAL 3.53 if you were reading 3.53 volts from the voltmeter.


Offset calibration of the power supply provides the best accuracy in lowrange input voltage.


1. Set the voltage source attached to the non-isolated Voltage APG input to 10% of the nominal voltage level, in this case 0.400 V.


3. Read the input voltage value from the voltmeter connected in step 1 of the gain calibration.

6-22 M370078-01


4. Type SCPI input Voltage calibration command with voltage noted in step 3 as the parameter “data”.

For example, you would type :CAL:INP:ANAL:CURR 0.43 if you read 0.43 volts from the voltmeter.


SCPI Command

[:] CALibration[<channel>]:INPut:ANALog[:VOLTage]

{<voltmeter reading in volts>}

Calibrating the Input Current APG Signal

The input voltage APG calibration is necessary to ensure accurate measurements when using the :MEAS:APR? and :MEAS:APR:ISOL?

SCPI command queries to monitor the APG input signal.


To calibrate the CAP APG input gain calibration:

1. Connect a short across the power supply output.

2. Connect a voltmeter and a DC voltage source to the non-isolated current APG input lines (J1.10 and J1.7).


4. Set the Current APG level to 4 V. Send the SCPI command:


5. Set the input source as Voltage analog APG. Send the SCPI command: SYST:REM:SOUR:CURR AVOL

6. Set the voltage source attached to the non-isolated current APG input to 90% of the nominal current level, in this case 3.6 V.


8. The power supply starts up in Constant Current mode.

9. Read the input voltage value from the voltmeter connected in step 2.

10. Type the SCPI input current calibration command with voltage noted in step 9 as the parameter “data”.

For example, you would type :CAL:INP:ANAL:CURR 3.49 if you were reading 3.49 volts from the voltmeter.

6

M370078-01 6-23



Offset calibration of the power supply provides the best accuracy in lowrange input current.


1. Set the voltage source attached to the non-isolated current APG input to 10% of the nominal current level, in this case 0.400 V.


3. Read the input voltage value from the voltmeter connected in step 2 of the gain calibration.

4. Type SCPI input current calibration command with voltage noted in step 3 as the parameter “data”.

For example, you would type :CAL:INP:ANAL:CURR 0.43.


SCPI Command

[:]CALibration[<channel>]:INPut:ANALog:CURRent{<voltme ter reading in volts>}

6-24 M370078-01


Storing and Loading Calibration Parameters

It is recommeneds that you save all the calibration parameters in a text file so they can be reloaded in the event of a flash failure or a mistake in calibration.

To get the calibration data, execute the following commands and save the response in a text file:

The SCPI command (s) to download all the calibration data are:

[:]CALibration:PARameter[:OUTPut]

[:]CALibration:PARameter:APRogram?

[:]CALibration:PARameter:INPut?

The response to these commands are in the 488.2 Arbitrary Program

Block Data format.

If the calibration ever needs to be restored, you can execute the same commands and write the arbitrary block data response that was received in the query as the parameter.

For example, downloading the parameter data can be done from the hyper terminal as follows.

:cal:par?

#262#h2710,#h0000,#h2710,#h0000,#h2710,#h0000,#h2710,

#h0000,#h1AA4

:cal:par:apr?

#259#h7B,#h7F,#h7F,#h7F,#h7F,#h7F,#h7F,#h7F,#h7F,#h7F,#h

7F,#h7F

:cal:par:inp?

#227#h2710,#h00,#h2710,#h00

To restore the XG with a set of previously saved calibration values can be done as follows.

:cal:par

#262#h2710,#h0000,#h2710,#h0000,#h2710,#h0000,#h2710,#h0

000,#h1AA4

:cal:par:apr

#259#h7F,#h7F,#h7F,#h7F,#h7F,#h7F,#h7F,#h7F,#h7F,#h7F,#h

7F,#h7F

:cal:par:inp

#h227#h2710,#h00,#h2710,#h00

6

M370078-01 6-25


By saving and reloading the calibration parameters using these commands, you can calibrate the XG for maximum accuracy for a specific load and then switch loads and load a calibration set that is accurate at maximum accuracy for the new load.

Restore Factory Calibration

Important:

Factory calibration is not the same as the shipped calibration.

Using this command will likely necessitate recalibrating all controls.

To restore factory calibration, use the SCPI command for returning the power supply to factory calibration settings.

The SCPI Command (s) for these instructions are:

[:]CALibration:RESTore

6-26 M370078-01


User Diagnostics

If your power supply is not performing as described in this Manual, read through the procedures and checks in this chapter before calling your service technician. These procedures are limited to operator level functions only. They do not require cover-off servicing of the unit.

Emergency Shutdown

In an emergency, carry out these steps:

1. Shut the power supply OFF immediately.

2. Disconnect the mains supply.


Unusual or Erratic Operation

If the power supply displays any unusual or erratic operation, follow these steps:

1. Shut the power supply OFF immediately.

2. Disconnect the power supply from the load and external programming.

3. Test the power supply with no load, running the tests in “Step 5:

Performing Functional Tests” on page 2–8.

4. If the tests show that the power supply is functioning normally, check all load, programming, and monitoring connections and circuits.

5. Check the AC input for correct voltage and frequency.

If the problem is not solved after you have followed this procedure, or if the unit fails to operate correctly upon retesting, call your service technician.

6

M370078-01 6-27


Troubleshooting for Operators

Refer to Table 6-1 to ensure that the power supply is configured and

connected for normal operation. If you require any further troubleshooting assistance, call your service technician. See “Contact

Information” on page iv.

Table 6-1 Troubleshooting

Symptom Check

The power supply is not operating. FLA FAIL is displayed.

Flash memory check sum error.

Further Checks and Corrections

Do a reset. See page 3–39.

Important:

The power supply will boot with default options and calibration values for the 6 V-110 A model.

6-28 M370078-01

A

SCPI Command

Reference

Appendix A, SCPI Command Reference, provides a

summary of the Standard Commands for Programmable

Instruments (SCPI) that are supported by the XG 850 Watt

Series Programmable DC Power Supply.

SCPI Command Reference

SCPI Conformance Information

Codes and Standards

This power supply conforms to the following international standards:

• IEEE Std. 488.2-1992, “IEEE Standard Codes, Formats, Protocols, and Common Commands For Use With IEEE Std. 488.1-1987”

• IEEE Std. 488.1-1987 “IEEE Standard Digital Interface for

Programmable Instrumentation”

• TIA/EIA-232F

• Standard Commands for Programmable Instruments (SCPI) Version

1999.0

IEEE 488.2 Requirements

GPIB control implements all IEEE 488.2 requirements.

SCPI Requirements

The power supply conforms to the following SCPI requirements:

• SCPI mandated commands

• Questionable Status Register (QSR), Condition, Event, Enable

• Operation Status Register (OSR), Condition, Event, Enable

• Status Byte Register (SBR)

• Standard Event Status Register (SESR)

IEEE 488.2/SCPI Syntax and Style

Parameters: Units of Measure and Multipliers

Refer to IEEE 488.2, section 7.7.3 for the definition of units of measure.

The default units of measure include:

• V (Volt – voltage)

• A (Ampere – current)

• W (Watt – power)

• S (seconds – time)

These units are only supported as defaults. To place the unit in the command will cause an error to be pushed into the error queue.

A-2 M370078-01

SCPI Conformance Information

SCPI Command Hierarchy

SCPI is an ASCII-based command language designed for use in test and measurement equipment. The command structure is organized around common roots, or nodes, which are the building blocks of SCPI subsystems. An example of a common root is CALibration, and some of the commands that reside in the CALibration subsystem are:

[:]CALibration

[:OUTPut]

[:VOLTage]

[:DATA] <NR1>

:CURRent

[:DATA] <NR1>

CALibration is the root keyword of the command. OUTPut is a secondlevel keyword, and VOLTage and DATA are third-level keywords. A colon (:) is used to separate a command keyword from a lower-level keyword.

A

M370078-01 A-3


Using SCPI Commands

This Manual shows SCPI commands in the following format:

CALibration:CURRent:LEVel {<current>|MIN|MAX}

The command is expressed as a mixture of upper- and lowercase letters.

The uppercase letters suggest how the command can be abbreviated into a short form. SCPI commands can be sent in long or short forms. The short form is better for data entry. The long form is better for readability.

Command strings are not case sensitive: CURR, Curr, and curr are all acceptable abbreviations for CURRent. As for the long form, CURRENT,

Current

, and current are all acceptable. It is not possible to write for example, CALibrat:CURR:LEV because the eXGa first node does not explicitly match the short or long form of the calibration node.

The command strings include punctuation. While some punctuation is sent with the string, other markings are used to identify different elements of the command syntax and are not sent with the string.

The following punctuation is sent with the command string:

•

Colons (:) separate command keywords from lower-level keywords.

For example, CAL:CURR:STAT.

•

Blank spaces separate command keywords from parameter values.

For example, CURR 0.1.

•

Commas separate parameters from each other when more than one

parameter is sent in the same string. For example, CAL:STAT

OFF,”1234.”

•

Semicolons (;) separate multiple commands from the same

subsystem. This allows for greater efficiency.

For example: CAL:CURR:LEV MIN;VOLT:LEV MIN is the same as typing:

CAL:CURR:LEV MIN

CAL:VOLT:LEV MIN

•

Colons and semicolons can be used together to link commands from

different subsystems. For example:

CAL:CURR:LEV MIN;:MEAS:CURR?

The short form is made up of 3 or 4 letters. There can only be a absolute short or long form. For example, it is not possible to write

CALibrat:CURR:LEV because the eXGa the first node does not match explicitly the short or long form of the calibration node.

A-4 M370078-01


The following punctuation is not sent with the command string:

•

Braces ({ }), or curly brackets, identify a selection of choices. Choose

one of the enclosed values.

•

Vertical bars, or pipes, ( | ) can be read as “or” and is used to separate

the choices found within the braces.

•

Angle brackets ( < > ) identify where specific values must be entered

for a parameter. For example, in the example at the top of the page, the parameter <current> appears in the command string. To set the current set point to 0.1A, the syntax is CAL:CURR:LEV 0.1.

•

Square brackets ( [ ] ) identify optional parameters. If an optional

parameter is not sent with the command string, a default parameter is sent in its place.

Using Minimum and Maximum

In the following example, Minimum and Maximum are offered as alternative choices to declaring a specific parameter value.

CAL:CURRent:LEVel {<current>|MIN|MAX}

The string CAL:CURR:LEV MIN sets the current calibration level to the minimum model value.

Using Queries

A question mark lets you query the present value for most parameters. For example, to query the current calibration state use:

CAL:SEC:STAT?

You can also use the following to query minimum and maximum allowed values for most parameters:

:VOLT? MIN

:VOLT? MAX

A

Important:

If you send two queries, it is best to read and respond to the first response before trying to read the second. Otherwise, you may receive an incomplete first response followed by a complete second response. To avoid this, you can either wait for and read the first response before sending the second query, or send a device clear message before sending the second query.

M370078-01 A-5


Terminating Characters

Every command string must end with a terminating <new line> character.

It is also acceptable to use a <carriage return> followed by a <new line>.

Terminating a command string always resets the SCPI command path to the root level.

Common Commands

The IEEE-488.2 standard includes a set of common commands for functions such as reset and self-test. These common commands always start with an asterisk (*), contain 4 or 5 characters, and may have one or more parameters. The command is always separated from the parameter by a blank space. Multiple commands sent in the same string are separated by a semi-colon (;). The following is an example of how 3 common commands can be sent together in the same string:

*OPC; *PSC Off; *TRG

A-6 M370078-01


Parameter Types

Several different data types are defined for use in program messages and response messages.

Boolean Parameters

Boolean parameters are single binary conditions such as 1 and 0, or ON and OFF. The following is an example of a command that uses Boolean parameters:

SYST:COMM:GPIB:PONS {ON|OFF|1|0}

Discrete Parameters

Discrete parameters are used when program settings have a limited number of values. If you query a discrete parameter, the response will always be in the short form with all uppercase letters. The following is an example of a command that uses discrete parameters:

TRIG:SOUR {BUS|EXT|IMM|NONE}

Numeric Parameters

Numeric parameters are number representations such as decimal points, optional signs, and scientific notation. Values such as MINimum and

MAXimum are accepted as substitutes for numbers. When DEFault is provided as a parameter, the machine selects the default value automatically. No units’ suffix should be included with the parameter, only support for defaults units is available. In cases where specific numeric values are accepted, the power unit will round the input parameters. The following is an example of a command that uses numeric parameters:

VOLT:PROT {<voltage>|MAX|MIN}

String Parameters

String parameters are used when a series of ASCII characters is required.

Strings must be enclosed within single or double quotations. The beginning and ending quotation marks must be matching. Quote delimiters may be included in the string by typing the quotation marks twice without any characters in between. The following is an example of a command that uses string parameters:

CAL:STAT ON, “0000”

A

M370078-01 A-7


SPCI Command Tree

The SCPI commands are organized into a tree structure. To illustrate the tree structure, the following tree has been provided. Each level of indentation presents a branch. The command to execute can then be found by following the tree from the root or farthest left node all the way down to the leaf node.

For example, to do the analog isolated programming command, start at the [:]CALibration root node, go through the :OUTPut node and then move down past the [:VOLTage] and :CURRent nodes which appear at that level to the :ANALog node and then move through the optional

[:VOLTage] node to the :ISOLated node.

Thus, the command would then be

[:]CALibration:OUTPut:ANALog[:VOLTage]:ISOLated

All commands can be formed by looking at this tree and taking the unique

path from the root node to the leaf node. Table A-1 on page A–14 shows

all the commands fully formed with parameters.

[:]CALibration

:PARameter

:APRogram

:INPut

[:OUTPut]

:INPut

:ANALog

[:VOLTage]

:CURRent

:OUTPut

[:VOLTage]

:CURRent

:MONitor

[:VOLTage]

:ISOLated

:CURRent

:ISOLated

:ANALog

[:VOLTage]

A-8 M370078-01

M370078-01

:ISOLated

:RESistive

:ISOLated

:CURRent

:ISOLated

:RESistive

[:VOLTage]

:ISOLated

:PROTection

[:OVER]

:RESTore

[:]INITiate

[:IMMediate]

[:]MEASure

:AProgram

[:VOLTage]

[:DC]

:ISOLated

[:DC]

:CURRent

[:DC]

:ISOLated

[:DC]

[:SCALar]

[:VOLTage]

[:DC]?

:CURRent

[:DC]?

[:]OUTPut

:PROTection

:CLEar

:FOLDback

[:MODE]

:DELay

:LATch

SPCI Command Tree

A

A-9


:POLarity

[:POWer]

[:STATe]

:PowerON

[:STATe]

:AUXilliary

[:STATe]

:PowerON

[:]PROGram

[:STATe]

:READback

:STATe

[:RECord]

:STARt

:STOP

:DELete

[:ALL]

:REPeat

[:STEP]

:DWELl

[[:]SOURce]

:COMBine

:CSHare

[:MODE]

:VOLTage

[:LEVEl]

[:IMMediate]

[:AMPLitude]

:PROTection

[:OVERvoltage]

[:LEVel]

:UNDer

[:LEVel]

:CURRent

[:LEVEl]

A-10 M370078-01

M370078-01

[:IMMediate]

[:AMPLitude]

[:]SENSe:

:PROTection

:INTerlock

[:STATe]

:TEMPerature

[:LATCh]

[:]STATus

:PRESet

:QUEStionable

[:EVENt]?

:ENABle

:CONDition

:PTRansition

:NTRansition

:VOLTage

[:EVENt]?

:ENABle

:CONDition?

:PTRansition

:NTRansition

:CURRent

[:EVENt]?

:ENABle

:CONDition?

:PTRansition

:NTRansition

:TEMPerature

[:EVENt]?

:ENABle

:CONDition?

:PTRansition

:NTRansition

SPCI Command Tree

A

A-11


:OPERation

[:EVENt]?

:ENABle

:CONDition?

:PTRansition

:NTRansition

:CSHare

[:EVENt]?

:ENABle

:CONDition?

:PTRansition

:NTRansition

:SHUTdown

[:EVENt]?

:ENABle

:CONDition

:PTRansition

:NTRansition

:PROTection

[:EVENt]?

:ENABle

:CONDition?

:PTRansition

:NTRansition

:STANdard

[:EVENt]?

:ENABle

:CLEar

:SBYTe

[:EVENt]?

:SREQuest

[:ENABle]

[:]SYSTem

:FPANel

[:TIMeout]

A-12 M370078-01

M370078-01

:PROTection

:LATCh

[:MASK]

:RESet

:WAIT

:TEST?

:RESet

:IDENtify?

:REMote

:STATe

:SOURce

[:VOLTage]

:CURRent

:COMMunicate

:APRogram

:LEVel

[:VOLTage]

[:ISOLated]

:CURRent

[:ISOLated]

[:MCHannel]

:ADDRess

:SAVE

:RECall

:VERSion?

:ERRor

[:NEXT]?

:CODE

[:NEXT]?

:COUNt?

:HELP

[:HEADers]?

:SYNTax?

SPCI Command Tree

A

A-13

SCPI Command Summary

The SCPI commands supported by this programmable power supply are described in the tables in the remainder of this section. These tables use the following column headings:

• Function The commonly used name for the function.

• SCPI Command The full command in long form.

• Description Explains what the command does or what is affected by it.

• Query? Indicates whether the unit supports a query version of the listed command. N/A indicates Not applicable. (The command has no query form and will respond with an error if queried.)

Table A-1 IEEE 488.2 Commands

Function SCPI Command Description

Parameter and

Range Query

Select

Address

Query the

Error Queue

Standard

Event Status

Enable Query

Standard

Event Status

Enable

Standard

Event Status

Register

Query

*ADR

Clear Status

*CLS

[:]STATus[<channel>]:CLEar

Select the power supply unit to communicate with.

?|<Address (1–30)> Yes

Clears all the status data structures.

N/A

*ERR

Query the Error Queue for the oldest error event.

*ESE?

[:]STATus[<channel>]:STANdard:ENABle

Query the Standard Event

Status Enable register settings.

*ESE

[:]STATus[<channel>]:STANdard:ENABle

<ESE-word>

Set the Standard Event

Status Enable Register bits.

*ESR?

[:]STATus[<channel>]:STANDard[:EVENt]?

Query the Standard Event

Status Register (SERS).

<Enable Flags(0–

255)>

Yes

N/A

Yes

Table A-1 IEEE 488.2 Commands (Continued)

Display All

SCPI

Command

Headers

Identification

Query

*HELP?

*IDN?

[:]SYSTem[<channel>]:IDENtify?

Operation

Complete

Command

Query

Operation

Complete

Command

Recall

*OPC

*OPC?

Reset

*RCL OR


<setting_location>

*RST


Display all the SCPI command headers available on this device.

Query device identification string.

Operation Complete

Command

Operation Complete Query

Recall a User Memory

Setting. See *SAV below.

Save User

Settings

Query Service

Request

Enable

*SAV


<setting_location>

*SRE?

[:]STATus[<channel>]:SREQuest:ENABle?

Service

Request

Enable

*SRE

[:]STATus[<channel>]:SREQuest:ENABle

<status-enable>

Read Status

Byte

*STB?

[:]STATus[<channel>]:SBYTe[EVENt]?

Resets all values to default state (excluding calibration data).

Save a User Memory

Setting.

Service Request Enable

Query

Service Request Enable

Command

Read the status byte.

<Setting Index (1–

5)>

<Enable Flags(0–

255)>

Yes

Yes

N/A

Yes

N/A

N/A

N/A

Yes

N/A

Yes

Table A-1 IEEE 488.2 Commands (Continued)

Trigger

Self-Test

Query

Wait To

Continue

*TRG

*TST?

[:]SYSTem[<channel>]:TEST?

*WAI

[:]SYSTem[<channel>]:WAIT

Trigger system

Perform unit Self Test

(Pass=0).

Wait to continue command.

Table A-2 Readback Commands

Function

Read Output

Current

SCPI Command

[:]MEASure[<channel>][:SCALar]:CURRent

[:DC]?

Read Output

Voltage

[:]MEASure[<channel>][:SCALar][:VOLTage]

[:DC]?

Read APG

Input Voltage

Read Isolated

APG Input

Voltage

Read APG

Inpu t Voltage

Read APG

Input Voltage

[:]MEASurement

[:SCALar]:APRogram

[:VOLTage][:DC]?

[:]MEASurement

[:SCALar]:APRogram

[:VOLTage]:ISOLated

[:DC]?

[:]MEASurement

[:SCALar]:APRogram

:CURRent[:DC]?

[:]MEASurement

[:SCALar]:APRogram

:CURRent:ISOLated

[:DC]?

Description

Measure and readback output current at the output terminals.

Measure and readback output voltage at the output terminals.

Measure and readback the voltage being input to the non isolated voltage analog programming input pin.

Measure and readback the voltage being input to the isolated voltage analog programming input pin.

Measure and readback the voltage being input to the non isolated current analog programming input pin.

Measure and readback the voltage being input to the isolated current analog programming input pin.

Parameter and

Range

N/A

Yes

N/A

Query

Yes

Yes

Yes

Yes

Yes

Yes

Table A-3 SCPI Commands for Output Control


Set Current

Sharing Mode

Set

(Immediate)

Voltage Set point

[[:]]SOURce[<channel>]]:COMBine:CSHare[:

MODE]

Set the XG to operate in the current share master or slave mode. If only a single unit is being used it should be set t o master.

Set Output latches for the alarms

[[:]SOURce[<channel>]]:COMBine:CSHare

[:MODE]

Set

(Immediate)

Current Set point

Sets the output latches for the alarms.

[[:]SOURce[<channel>]]:CURRent[:LEVel]

[:IMMediate][:AMPLitude]

Set current set point

(immediate)

[[:]SOURce[<channel>]]:VOLTage[:LEVel]

[:IMMediate][:AMPLitude]

Change voltage set point

(immediate)

[[:]SOURce[<channel>]]:VOLTage:PROTect ion[:OVERvoltage][:LEVel]

Set the over voltage protection level.

Set Over

Voltage

Protection

Level

Set Under

Voltage

Protection

Level

[[:]SOURce[<channel>]]:VOLTage:PROTect ion:UNDer[:LEVel]

Set the under voltage protection level.

Parameter and

Range

?|MASTer

|SLAVe

?|<alarm sum of latch flags>

?|<Current Set

Point>|MAXimum|

MINimum

?|<Voltage Set

Point>|MAXimum|

MINimum

?|<OVP Set

Point>|MAXimum|

MINimum

?|<UVP Set

Point>|MAXimum|

MINimum

Query

Yes

Yes

Yes

Yes

Yes

Yes

Table A-4 SCPI Commands for Calibration

Function

Restore

Factory

Calibration

Calibrate

OVP protection.

Enter Output

Voltage Data

Enter Output

Current Data

Calibrate the

Voltage controlled

Non Isolated

Voltage APG feature

Calibrate the

Voltage controlled

Isolated

Voltage APG feature

Calibrate the

Voltage controlled

Non Isolated

Current APG feature

SCPI Command

[:]CALibration[<channel>]:RESTore

[:]CALibration[<channel>][:VOLTage]

:PROTection[:OVER]

[:]CALibration[<channel>]:OUTPut

:VOLTage


:CURRent

[:]CALibration[<channel>]:MONitor

[:VOLTage]


[:VOLTage]:ISOLated


:CURRent

Description

Restores the calibration to the factory defaults.

Calibrate the over voltage protection.

Sets the voltage output calibration level.

Sets the current output calibration level

Calibrate the voltage monitor signal system.

Calibrate the isolated voltage monitor signal system.

Calibrate the current monitor signal system.

Parameter and

Range

N/A

<OVP Voltage Set in Volts>

No

<Voltage set in volts>

<Current set in amps>

? | <NR1> |

<nothing for interactive mode>

? | <NR1> |


? | <NR1> |


Query

N/A

No

No

Yes

Yes

Yes

Table A-4 SCPI Commands for Calibration (Continued)

Calibrate the

Voltage controlled

Isolated

Current APG feature

Calibrate the

Voltage APG

Input

Calibrate the

Current APG

Input

Calibrate the

Voltage controlled

Non Isolated

Voltage APG feature

Calibrate the

Voltage controlled

Isolated

Voltage APG feature

Calibrate the

Voltage controlled

Non Isolated

Current APG feature


:CURRent:ISOLated

[:]CALibration:INPut

:ANALog[:VOLTage]

[:]CALibration:INPut

:ANALog:CURRent


:ANALog[:VOLTage]


:ANALog[:VOLTage]:ISOLated


:ANALog:CURRent

Calibrate the isolated current monitor signal system.

? | <NR1> |


Yes

Calibrates the isolated and non-isolated VAP measurement commands.

Calibrates the isolated and non-isolated CAP measurement commands.

<?|NR1>

<?|NR1>

Calibrate the voltage analog programming system.

? | <NR1> |


Yes

Yes

Yes

Calibrates the voltage analog programming system.

? | <NR1> |


Yes

Calibrate the current analog programming system.

? | <NR1> |


Yes


Calibrate the

Voltage controlled

Isolated

Current APG feature

Calibrate the

Resistive controlled

Non Isolated

Voltage APG feature

Calibrate the


Isolated

Voltage APG feature

Calibrate the


Non Isolated

Current APG feature

Calibrate the


Isolated

Current APG feature


:ANALog:CURRent:ISOLated


:ANALog[:VOLTage]:RESistive


:ANALog[:VOLTage] :RESistive:ISOLated


:ANALog:CURRent:RESistive


:ANALog:CURRent:RESistive:ISOLated

Calibrates the current analog programming system.

Calibrate the Resistive controlled voltage analog programming system.

Calibrates the Resistive controlled voltage analog programming system.

Calibrate the Resistive controlled current analog programming system.

Calibrates the Resistive controlled current analog programming system.

? | <NR1> |


Yes

? | <NR1> |


Yes

? | <NR1> |


Yes

? | <NR1> |


Yes

? | <NR1> |


Yes


Get Output

Calibration

Parameters

[:]CALibration[<channel>]:PARameter

[:OUTPut]

Get Analog

Programming

Calibration

Parameters

[:]CALibration[<channel>]:PARameter

:APRogram

Queries and loads the output calibration parameters in arbitrary program block data format.

?|<arbitrary program block data>

Queries and loads the APG calibration parameters in arbitrary program block data format.

?|<arbitrary program block data>

Yes

Yes

Table A-5 SCPI Commands to Clear All Protection Mechanisms

Function

Clear Output

Protection

SCPI Command Description

[:]OUTPut[<channel>]:PROTection:CLEar Clears the currently set alarms.

Table A-6 SCPI Commands for Foldback Protection

Function

Set Output

Foldback

Delay

Set Output

Foldback

Mode

SCPI Command

[:]OUTPut[<channel>]:PROTection

:FOLDback:DELay

[:]OUTPut[<channel>]:PROTection

:FOLDback[:MODE]

Parameter and

Range Query

N/A

Description

Parameter and

Range Query

Set the delay time (seconds) before foldback protection is triggered.

?|<Delay - (0.5-50)> Yes

Select condition for foldback.

?|CV|CC|NONE Yes

Table A-7 SCPI Commands for Power

Function SCPI Command

Shutdown

Logic Control

[:]OUTPut:POLarity

Main Output

Control

Power On

Main Output

Control

Aux Output

Control

Power

Auxiliary

Output

Control

[:]OUTPut[:POWer][:STATe]

[:]OUTPut[:POWer]:PON[:STATe]

[:]OUTPut:AUXilliary[:STATe]

[:]OUTPut:AUXilliary:PON[:STATe]

Table A-8 SCPI Commands for Triggering


Set Immediate

Initiation of

Trigger

System

[:]INITiate[<channel>][:IMMediate]

Description

Sets the TTL level that will trigger an External

Shutdown.

Control Main Output State

(Enable/Disable)

Control Main Output

Autostart State (Enable/

Disable)

Control Aux Output State

(Enable/Disable)

Control Aux Output

Autostart State (Enable/

Disable)

Parameter and

Range

?|HIGH|LOW

?|ON|OFF

?|ON|OFF

?|ON|OFF

?|ON|OFF

Query

Yes

Yes

Yes

Yes

Yes

Description

Triggers the Autosequence

Program.

Parameter and

Range Query

N/A

Table A-9 System Commands


Parameter and

Range Query

Set the menu system timeout

Resets the

Instrument to default values.

Wait to

Continue

Self Test

[:]SYSTem:FPANel[:TIMeout]


[:]SYSTem[<channel>]:WAIT

Sets the menu system timeout.

Resets all values to default state (excluding calibration data).

Wait to continue command.

<1–20 to one decimal place seconds>

[:]SYSTem[<channel>]:TEST?

Perform unit Self test, returns 0 if pass, non zero value for failure.

ID Query

Save User

Preset

[:]SYSTem[<channel>]:IDENtify


Recall User

Preset

(previously saved)


Query System

Error

[:]SYSTem[<channel>]:ERRor[:NEXT]?

Query device ID string.

Save the user preset values.

Select any slot from 1-5.

Load the user preset values. Select any slot from

1-5.

Returns the next error in the instrument’s error queue

Query System

Error Code

[:]SYSTem[<channel>]:ERRor:CODE[:NEXT]

?

Returns the error code only for the next error in the instrument’s error queue.

<Setting Index

(1–5)>

<Setting Index

(1–5)>

Yes

N/A

N/A

Yes

Yes

No

No

Yes

Yes

Table A-9 System Commands (Continued)

Query the

Error Queue for the number of entries.

[:]SYSTem[<channel>]:ERRor:COUNt?

Select Voltage

Analog

Programming

Input Voltage

Input Level/

Range

[:]SYSTem[<channel>]:COMMunicate

:APRogram:LEVel[:VOLTage][:ISOLated]


:APRogram:LEVel:CURRent[:ISOLated]

Select Current

Analog

Programming

Input Voltage

Input Level/

Range

Select the address to communicate with.


[:MCHannel]:ADDRess

Returns the number of errors currently in the error queue.

Yes

Select level for Voltage

APG. Level can be between

2 -10 volts.

?|<Level (2–

10)>|MAXimum|MI

Nimum

Yes

Select level for Current

APG. Level can be between

2 -10 volts.

?|<Level(2–

10)>|MAXimum|MI

Nimum

Yes

Select

Address

Setup the

Voltage control APG source

[:]SYSTem:COMMunicate[:SELF]:ADDRess

[:]SYSTem[<channel>]:REMote:SOURce

[:VOLTage]

Select the current device to receive the commands. The parameter for this command is the address set on the front panel under the remote

Select the power supply unit to communicate with.

Alter or query the state of the remote programming voltage APG source.

?|<Address (1–30)

?|LOCal|AVOLtag e|IAVoltage|ARE

Sistive|IAResis tive

Yes

Yes

Yes


Setup the

Current control APG source

Set Front

Panel lock state.

Query SCPI

Version

[:]SYSTem[<channel>]:REMote:SOURce

:CURRent

[:]SYSTem[<channel>]:REMote:STATe

Alter or query the state of the remote programming current APG source.

Change front panel control mode

?|LOCal|AVOLtag e|IAVoltage|ARE

Sistive|IAResis tive

?|LOCal|REMote

SCPI Help

[:]SYSTem[<channel>]:VERSion?


Returns the SCPI version to which the instrument complies. Format is

YYYY.V

Query system for all supported SCPI command headers.

Legacy Help

Command

Syntax Help

Alarm

Masking


[:]SYSTem[<channel>]:HELP:SYNTax?

Query the system for all supported legacy commands.

Query the system for the syntax of a command. The command should be input after the query as a string parameter. To enter a command you should do this by typing the command as you would on the command line without parameters. To find all command headers see

[:]SYSTem:HELP

[:HEADers]?

<COMMAND>

[:]SYSTem[<channel>]:PROTection[:MASK] Enable/disable alarms/ protection.

?|<Alarm Mask - (0–

255)

Yes

Yes

Yes

Yes

Yes

Yes

Yes


Set Alarm

Output

Latches

[:]SYSTem:PROTection:LATCh

Sets the Alarm Output

Latches. See Table 3-6 on page 3–22.

?| <Sum of output latch flags>

Yes

Table A-10 Status Commands

Function

Query

Operation

Status

Condition

Register

SCPI Command

[:]STATus[<channel>]:OPERation

:CONDition?

Description

Query the Operations

Condition Register.

See Table 5-11 on page 5–

36.

Set Operation

Status Enable

Register

[:]STATus[<channel>]:OPERation:ENABle

Access the Operations

Enable Register.


36.

Parameter and

Range

?|<Enable Flags -

(0–65535)>

Query

Operation

Status Event

Register

[:]STATus[<channel>]:OPERation[:EVENt]

?

Set Operation

Status

Negative

Transition

Register


:NTRansition

Set Operation

Status

Positive

Transition

Register


:PTRansition

Query the Operations Event

Register.


36.

Access the Operation

Negative Trans Filter

Register.


36.


Positive Trans Filter

Register.


36.

?|<Transition Flags

- (0–65535)>

?|<Transition Flags

- (0–65535)>

Query

Yes

Yes

Yes

Yes

Yes

Table A-10 Status Commands (Continued)

Query

Operation

Status

Shutdown

Condition

Register

Set Operation

Status

Shutdown

Enable

Register


:SHUTdown:ENABle


:SHUTdown[:EVENt]?

Query

Operation

Status

Shutdown

Event

Register


:SHUTdown:CONDition?


:SHUTdown:NTRansition

Set Operation

Status

Shutdown

Negative

Transition

Register


:SHUTdown:PTRansition

Set Operation

Status

Shutdown

Positive

Transition

Register


37.

Query the Operation

Shutdown

Condition Register

Yes


Shutdown Enable Register.


37.

?|<Enable Flags -

(0–65535)>

Yes


37.

Query the Operation

Shutdown Event

Register

Yes


37.

?|<Transition Flags

- (0–65535)>

Yes


Shutdown Positive Trans

Filter Register.


37.

?|<Transition Flags

- (0–65535)>

Yes


Query

Operation

Status

Shutdown

Protection

Condition

Register


:SHUTdown:PROTection:CONDition?

Set Operation

Status

Shutdown

Protection

Enable

Register


:SHUTdown:PROTection:ENABle


:SHUTdown:PROTection[:EVENt]?

Query

Operation

Status

Shutdown

Protection

Event

Register


:SHUTdown:PROTection:NTRansition

Set Operation

Status

Shutdown

Protection

Negative

Transition

Register

Query the Operation

Shutdown Protection

Condition Register.


37.

Yes


Shutdown Protection Enable

Register.


37.

?|<Enable Flags -

(0–65535)>

Yes

Query the Operation

Shutdown Protection Event

Register.


37.

Yes

Register. See Table 5-12 on page 5–37.

?|<Transition Flags

- (0–65535)>

Yes


Set Operation

Status

Shutdown

Protection

Positive

Transition

Register


:SHUTdown:PROTection:PTRansition

Query

Operation

Status Event

Register


:CSHare[:EVENt]?

Set Operation

Status Enable

Register


:CSHare:ENABle

Query

Operation

Status

Condition

Register


:CSHare:CONDition?

Set Operation

Status

Positive

Transition

Register


:CSHare:PTRansition

Set Operation

Status

Negative

Transition

Register


:CSHare:NTRansition


Shutdown Protection


Register.


37.

?|<Transition Flags

- (0–65535)>

Yes

Query the Operations Event

Register.


36.

Access the Operations

Enable Register. See

Table 5-11 on page 5–36.

?|<Transition Flags

- (0–65535)>

Query the Operations

Condition Register. See

Table 5-11 on page 5–36.

Yes

Yes

Yes



Register. SeeTable 5-11 on page 5–36.

?|<Transition Flags

- (0–65535)>

Yes



Register. See Table 5-11 on page 5–36.

?|<Transition Flags

- (0–65535)>

Yes


Preset Enable,

Positive

Transition and

Negative

Transition

Status

Registers

[:]STATus[<channel>]:PRESet

Query

Questionable

Status

Condition

Register

Set

Questionable

Status Enable

Register

[:]STATus[<channel>]:QUEStionable

:CONDition?


:ENABle

Query

Questionable

Status Event

Register


[:EVENt]?


:NTRansition

Set

Questionable

Status

Negative

Transition

Register


:PTRansition

Set

Questionable

Status

Positive

Transition

Register

Restores the configuration of the SCPI status registers to known reporting conditions, IE Transition registers and enable register.

See “Status Reporting in

SCPI” on page 5–25 for more details.

Query the Questionable

Condition Register.


45.

Yes

Yes

Access the Questionable

Enable Register.


45.


Event Register. See Table 5-

15 on page 5–45.

?|<Enable Flags -

(0–65535)>

Yes

N/A



Register.


45.

?|<Transition Flags

- (0–65535)>

Yes



Register.


45.

?|<Transition Flags

- (0–65535)>


Query

Questionable

Status Current

Condition

Register


:CURRent:CONDition?

Set

Questionable

Status Current

Enable

Register


:CURRent:ENABle

Query

Questionable

Status Current

Event

Register


:CURRent[:EVENt]?


:TEMPerature:CONDition?

Query

Questionable

Status

Temperature

Condition

Register


:TEMPerature:ENABle

Set

Questionable

Status

Temperature

Enable

Register


:TEMPerature[:EVENt]?

Query

Questionable

Status

Temperature

Event

Register


45.


45.

?|<Enable Flags-(0–

65535)>

Yes


45.

Yes

Yes


Temp Conditions Register.


45 .

Yes


Temp Enable Register.


45.

?|<Enable Flags -

(0–65535)>

Yes


Temp Event Register.


45 .

Yes


Set

Questionable

Status

Temperature

Negative

Transition

Register


:TEMPerature:NTRansition

Set

Questionable

Status

Temperature

Positive

Transition

Register


:TEMPerature:PTRansition

Query

Questionable

Status Voltage

Condition

Register


:VOLTage:CONDition?

Set

Questionable

Status Voltage

Enable

Register


:VOLTage:ENABle

Query

Questionable

Status Voltage

Event

Register


:VOLTage[:EVENt]?


Temp Negative Trans Filter

Register.


45.

?|<Transition Flags

- (0–65535)>

Yes


Temp Positive Trans Filter

Register.


45 .

?|<Transition Flags

- (0–65535)>

Yes


45.

Query the

Questionable

Voltage Condition

Register

Yes


Volt Enable Register.


45.

?|<Enable Flags -

(0–65535)>

Yes

Query the Questionable Volt

Event Register.


45.

Yes


Set

Questionable

Status Voltage

Negative

Transition

Register


:VOLTage:NTRansition


:VOLTage:PTRansition

Set

Questionable

Status Voltage

Positive

Transition

Register


Voltage Negative Trans

Filter Register.


45.

Query the

Standard

Event register

(ESR?)

[:]STATus[<channel>]:STANdard[:EVENt]?


32. Same as *ESR.

Enable the

Standard

Event register

(*ESE,*ESE?

)

[:]STATus[<channel>]:STANdard:ENABle Access the Standard Event

Status Register (SERS)

Enable Flags.


32. Same as *ESE.

Query the

Status Byte

(*STB)

Service

Request

Enable

(*SRE,*SRE

?)

[:]STATus[<channel>]:SBYTe[:EVENt]?

[:]STATus[<channel>]:SREQuest:ENABle

Query the Status Byte.


32.

Access Service Request

Enable Command.

[:]STATus[<channel>]:CLEar Clears all the Status Data

Structures.

?|<Transition Flags

- (0–65535)>


Voltage Positive Trans Filter

Register.


45.

?|<Transition Flags

- (0–65535)>

Query the Standard

Event Status

Register (SERS).

Yes

Yes

Yes

?|<Enable Flags - (0

–255)>

Yes

Yes

?|<Enable Flags - (0

–255)>

Yes

Table A-11 Protection Commands

Function

Enable the interlock functionality.

SCPI Command

[:]SENSe[<channel>]:PROTection

:INTerlock[:STATe]

Description

Control the Enable/Disable state of the Interlock

System.

Parameter and

Range

?|ON|OFF

Query

Yes

Table A-12 Auto Sequence Commands


Delete all sequences.

Change Auto

Sequence operating state.

Program selected sequence end action.

Begin

Recording

Auto

Sequence

Program

Stop

Recording

Auto

Sequence

Program

[:]PROGram[<channel>]:DELete:ALL

[:]PROGram[<channel>]:STATe

[:]PROGram[<channel>]:REPeaT


[:]PROGram[<channel>][:RECord]:STOP

Description

Erases the sequence currently in memory.

Access to the run state of the Sequence.

Parameter and Range Query

N/A

?|RUN|STOP|PAUSE Yes

Sets the number of times to repeat the sequence.

?|<Repeat count (1–

65534)>INFinity

Yes

Start recording new sequence (overwrites old sequence).

Stop recording the auto sequence program.

(Sequence ready to run.)

N/A

N/A

Table A-12 Auto Sequence Commands (Continued)


Set the

Program

Command

Execution

Delay Time

[:]PROGram[<channel>][:STEP]:DWEL1

Read the current contents of the

Autosequence programming buffer.

[:]PROGram[<channel>]:READback?

Description

Sets the amount of time to delay between commands in a Sequence.

Parameter and Range Query

?|<Dwell time in seconds>

Yes

Read the current contents of the Autosequence programming buffer.

?

Yes

A-36

B

Error Messages

Appendix B, Error Messages, provides information on the error messages which may appear. Errors are placed in a queue as they are detected.

Error Messages

Error Messages

Errors are placed in a queue as they are detected. The queue works on a first in, first out (FIFO) basis. If the queue overflows, the last error in the queue is replaced with error –350, “Queue Overflow”. When all errors have been read from the queue, further error queries return 0, “No error”.

The error queue is cleared when any of the following occur (IEEE 488.2, section 11.4.3.4):

• Upon receipt of a *CLS command

• Upon reading the last item from the queue

B-2 M370078-01

Error Messages

Command Error List

An error in the range [-199, -100] indicates that an IEEE 488.2 syntax error has been detected by the instrument’s parser. The occurrence of any error in this class causes the command error bit (bit 5) in the Event Status

Register to be set.

Table B-1 Command Error List

Error Code Error Message Description

-100 Command error

This is the generic syntax error

-102

Syntax Error

An unrecognized command or data type was encountered; for example, a string was received when the device does not accept strings.

-108

Parameter not Allowed

More parameters were received than expected for the header; for example, the *SRE common command only accepts one parameter, so receiving *SRE 0,1 is not allowed.

-109

-110

-113

-121

-140

-150

-151

Missing Parameter

Fewer parameters were received than required for the header; for example, the *SAV common command requires one parameter, so receiving *SAV is not allowed

.

Command header error

An error was detected in the header.

Undefined header

The header is syntactically correct, but it is undefined for this specific device; for example, *XYZ is not defined for any device.

Invalid character in number

An invalid character for the data type being parsed was encountered; for example, an alpha in a decimal numeric or a

“9" in octal data.

Character data error

This error is generated when parsing a character data element.

String data error

This error is generated when parsing a string data element fails.

Invalid string data

A string data element was expected, but was invalid for some reason (see IEEE 488.2, 7.7.5.2); for example, an END message was received before the terminal quote character.

B

M370078-01 B-3

Error Messages

Execution Error List

An error in the range [-299, -200] indicates that an error has been detected by the instrument’s execution control block. The occurrence of any error in the class causes the execution error bit (bit 4) in the Event Status

Register to be set.

Execution errors are reported by the device after rounding and expression evaluation operations have taken place.

Table B-2 Execution Error List


-200

-203

-220

-221

Execution Error

This is the generic syntax error for devices that cannot detect more specific errors. This code indicates only that an Execution

Error as defined in IEEE 488.2, 11.5.1.1.5 has occurred.

Command protected

Indicates that a legal password-protected program command or query could not be executed because the command was disabled. Check the calibration state.

Parameter error

Indicates that a program data element related error has occurred

Setting conflict

Indicates that a legal program data element was parsed, but could not be executed due to the current power supply state.

The following list is not exhaustive but does cover some of the more common conditions that may contribute to this error:

• OVP/UVP Set Points —The OVP and UVP limit the setting of the voltage set point so that you cannot accidentally trigger these alarms by changing the set point outside of their range. Conversely, setting the OVP set point to be less than the voltage set point will also trigger this error.

• Changing the Set Point while in APG mode —The user will be unable to change the set point while APG is being used to control that parameter: voltage or current.

• Autosequence Programming —Various conflicts can occur while using Autosequence programming; for example, using the trigger command while the program is running will result in this error.

• Calibration mode —When in calibration mode, certain settings will cause an error.

B-4 M370078-01

Error Messages

Table B-2 Execution Error List


-222

-224

-291

Data out of range

Indicates that a legal program data element was parsed but could not be executed because the interpreted value was outside the legal range as defined by the device (see IEEE

488.2, 11.5.1.1.5)

Illegal parameter value

Used where the exact value, from a list of possible values, was expected.

Out of memory

Used when the Autosequence programming buffer is full.

Device-Specific Error List

An error in the range [-399, 300] or [1, 32767] indicates that the instrument has detected an error which is not a command error, a query error, or an execution error; some device operations did not properly complete, possibly due to an abnormal hardware or firmware condition.

These codes are also used for self-test response errors. The occurrence of any error in the class causes the device-specific error bit (bit 3) in the

Event Status Register to be set.

Table B-3 Device-Specific Error List


-300

-350

-360

-363

-365

Device-specific error.

Indicates that the power supply could not complete the operation due to some condition of the power supply.

Queue Overflow

A specific code entered into the queue in lieu of the code that caused the error. This code indicates that there is no room in the queue and an error occurred but was not recorded.

Communication error

This is the generic communication error for devices.

Input buffer overrun

Software or hardware input buffer on serial port overflows with data caused by improper or nonexistent pacing.

Time out error

This is a generic device-dependent error.

B

M370078-01 B-5

Query Error List

An error number in the range [-499, -400] indicates that the output queue control of the instrument has detected a problem with the message exchange protocol described in IEEE 488.2, chapter 6. The occurrence of any error in this class causes the query error bit (bit 2) in the Event Status Register to be set.

Table B-4 Query Error List


-400 Query Error

This is the generic query error for the power supply, used only when the other types of errors do not apply.

B-6

C

Specifications

Appendix C, Specifications, provides the product specifications for the XG 850 Watt Series Programmable DC Power Supply.

• These specifications are represented over the full operating temperature range.

• Nominal line input voltage should be assumed unless otherwise stated.

• All sense lines are configured for local operation by default.

• Except where otherwise noted, specifications apply to single unit operation only.

• Specifications are subject to change without notice.

Electrical Specifications for XG 850 Watt

Table C-1 XG 850 Watt Electrical Specifications for 6 V to 600 V Models

12-70 20-42 33-25 Models 6-110 8-100

Output Ratings:

Output Voltage

1

Output Current

2

Output Power

3

Line Regulation:

Voltage

4

(0.005% of rated output voltage +2 mV)

Current

5

(0.01% of rated output current +2 mA)

Load Regulation

Voltage

6

(0.005% of rated output voltage + 2 mV)

Current

7

(0.02% of rated output current +5 mA

6 V

110 A

670 W

2.3 mV

13 mA

2.3 mV

27 mA

8 V

100 A

810 W

2.4 mV

12 mA

2.4 mV

25 mA

Output Noise (rms, 300 kHz):

Voltage

Current

8

Output Noise (p-p, 20 MHz):

Voltage

8 mV

200 mA

Up-prog. Response Time,

0~Vmax

10

50 mV

Maximum Recommended Remote

Sense Line Drop Compensation per

Line

9

1 V

60 ms

Down-prog. Response Time: Full

Load

Down-prog. Response Time: No

Load

Over-Voltage Trip Point

50 ms

300 ms

0.5–7.5 V

8 mV

180 mA

50 mV

1 V

60 ms

50 ms

400 ms

0.5–10 V

12 V

70 A

850 W

2.6 mV

9 mA

2.6 mV

19 mA

8 mV

120 mA

8 mV

75 mA

50 mV

1 V

60 ms

50 ms

500 ms

20 V

42 A

850 W

3.0 mV 3.7 mV

6.2 mA 4.5 mA

3.0 mV 3.7 mV

60 ms

50 ms

33 V

25 A

835 W

13.4 mA 10 mA

8 mV

60 mA

50 mV 50 mV

1.5 V 2 V

60 ms

50 ms

600 ms 700 ms

40-21

40 V

21 A

850 W

4 mV

4.1 mA

4 mV

9.2 mA

8 mV

45 mA

50 mV

2 V

60 ms

50 ms

800 ms

60-14

60 V

14 A

850 W

5 mV

3.4 mA

5 mV

7.8 mA

8 mV

35 mA

50 mV

3 V

60 ms

50 ms

900 ms

1–15 V 1–24 V 2–39 V 2–44 V 3–66 V

80-10.5

100-8.5

150-5.6

300-2.8

600-1.4

80 V

10.5 A

850 W

6 mV

3.1 mA

7 mV

2.9 mA

9.5 mV

2.6 mA

6 mV

7.1 mA

7 mV

6.7 mA

9.5 mV

6.1 mA

8 mV

25 mA

80 mV

5 V

100 ms

80 ms

100 V

8.5 A

860 W

8 mV

20 mA

80 mV

5 V

100 ms

100 ms

150 V

5.6 A

850 W

10 mV

16 mA

100 ms

150 ms

300 V

2.8 A

850 W

600 V

1.4 A

850 W

17 mV

2.3 mA

32 mV

2.1 mA

17 mV

5.6 mA

32 mV

5.3 mA

25 mV

10 mA

50 mV

6 mA

100 mV

5 V

150 mV 250 mV

5 V 5 V

150 ms 250 ms

150 ms 250 ms

1000 ms 1200 ms 1800 ms 2200 ms 3500 ms

3–95 V 3–125 V 3–180 V 5–330 V 5–660 V

Table C-1 XG 850 Watt Electrical Specifications for 6 V to 600 V Models

Models 6-110 8-100 12-70 20-42 33-25 40-21 60-14 80-10.5

100-8.5

150-5.6

300-2.8

600-1.4

Efficiency

11 75/77% 77/80% 81/84% 82/85% 83/86% 83/87% 83/87% 83/87% 83/87% 83/87% 83/87% 83/87%

1.Maximum output voltage is guaranteed to be

≤

0.1% of the rated voltage at zero output setting, using the front panel or digital remote programming modes.

2.Maximum output current is guaranteed to be

≤

0.2% of the rated current at zero output setting, using the front panel or digital remote programming modes, and when measured with rated load resistance.

3.Total output power is also based on AUX1 Output Voltage (5 V) and AUX1 Output Current (0.5 A) and AUX2 Output Voltage (15 V) and AUX2 Output Current (0.5 A).

4.From 85–132 Vac or 170–265 Vac, constant load.

5.From 85–132 Vac or 170–265 Vac, constant load.

6.From no load to full load, constant input voltage.

7.For load voltage change, equal to the unit voltage rating, constant input voltage.

8.For 6 V models the current ripple is measured at 2–6 V output voltage and full output current. For all other models, the current ripple is measured at 10–100% output voltage and full output current.

9.When using remote sense, the total of the load voltage and the load line drops must not exceed the rated output of the power supply. For example, for an XG 6-110 in an application with 1 V of load line loss (0.5 V/Line), the maximum available load voltage would be 6–1= 5 V. Note: The unit may operate at higher output voltages than this, but there is no guarantee that the power supply will meet performance specifications. Ultimately, the upper limit of the output voltage will be determined by internal circuitry of the power supply

(non-adjustable.)

10.With rated, resistive load.

11.At 100/200 Vac input voltage and maximum output power.

Applies to all footnotes: Programming and Readback: RS-232, RS-485, USB built in. GPIB, Ethernet optional.

Specifications are guaranteed from 1% to 100% of the rated output voltage, current, and power.

AC Line Input Specifications for XG 850 Watt

The input to the power supply requires the following input specifications.

Rated AC Input Voltage/Frequency

Operational AC Input Voltage/Frequency

Input Current (at 100/200 Vac)

Inrush Current (100/200 Vac)

Power Factor Correction

100–240 Vac, 47–63 Hz

85–265 Vac continuous, single phase, 47–63 Hz

11.5/6 A

Less than 25 A

0.99@100/200 Vac, rated output power

Remote Operation

Table C-2 Remote Operation

Programming Mode

Voltage and Current Output Voltage Programming

Votage and Current Output Resistive Programming

Output Voltage and Current Monitor

Voltage Programming Accuracy

1

Current Programming Accuracy

Voltage Readback Accuracy

Current Readback Accuracy

Isolation (Prog and Readback Lines)

Parallel Operation

Series Operation

Shutdown Control

2

OUTPUT ENABLE Auxiliary Control

Power Supply Status Signal

1

Constant Voltage (CV)/Constant Current (CC) Indicator

Interlock Enable/Disable

APG ISOL Digital

0–100%. Voltage control range is 0.0 to 2.0-10.0V in 0.1V increments.

0-100%. Resistive control range is 0.0 to 2.0 - 10.0K in 0.1K increments.

0-100%. Output voltage monitor range is 0.0 to 2.0 - 10.0V in 0.1V increments.

± 0.5% of rated output voltage, max. (0 to 4.0V / 4K Ohm range)

± 0.5% of rated output voltage, typical in other ranges

±0.1% of rated output voltage

±0.2% of rated output current ± 1.0% of rated output current, max. (0 to 4.0V / 4K Ohm range)

± 1.0% of rated output current, typical in other ranges

± 1% of rated output voltage

± 1% of rated output current

±0.1% of rated output voltage

±0.2% of rated output current

With respect to chassis potential:

500 V

With respect to: chassis potential: 500 V.

negative or positive main output: 1500 V.

Up to 4 units in master/slave mode

Up to 2 units (with external diodes)

CV: TTL High (4–5 V)

CC: TTL Low (0–0.6 V)

Logic low 0.0 - 1.4V

Logic high 2.0 - 15V

Dry contact compatible

TTL level or dry contact compatible

TTL high: OK (4–5 V)

TTL low: fail (0–0.6 V)

Dry contact. Open/Short: On or Off, programmable

1.Typical APG or isolated APG accuracy can be improved to max accuracy by user calibration at the specific range selected.

2.The shutdown input has user selectable negative logic operation via front panel or remote digital input/output.

Common Specifications for All Models

Output Performance Specifications

Aux output

1

Temperature Coefficient

Drift (8 hours)

Hold-up Time

Transient Response Time

2

Meter Accuracy

Isolation

AC Input to Output

AC Input to Chassis

Output to Chassis

3

+5V: +0.4V, – 0.5V at 0.4A

+15V: +1.2V, – 1.4V at 0.4A

100 PPM/° C from rated output voltage, after a 30-minute warm-up

0.05% of rated output (over an 8 hour interval with constant line, load and temperature, after a 30-minute warm-up)

Typical 20 ms at any rated input line.

Less than 1 ms for 6 V to 60 V models. Less than 2 ms for 80 V to 600 V models

0.5% of actual output voltage or current ± 1 count

1350 Vac

1350 Vac

500 Vac

1.Current: 0.51A minimum guaranteed, 0.72A typically available. Overcurrent protection (each output) is automatic, non-latching. When OCP is tripped the aux voltage folds back and will recover to nominal condition when the over current condition is removed (typ. < 0.2A).

To protect external circuits attached to the aux outputs it is recommended that customers use an appropriately rated fuse in series with the aux outputs being used.

2.Time for the output voltage to recover within 0.5% at its rated output for a load change 10–90% of rated output current. Output set point 10–100%.

3.For floating chassis ground applications, please contact applications engineering for system design assistance.

Environmental Specifications (Indoor use)

Operating Temperature Range

Storage Temperature Range

Operating Humidity Range

Storage Humidity Range

Operating Altitude

Installation Category

Pollution Degree

Mechanical Specifications

XG 850 Watt (W×H×D)

Weight

Cooling

Regulatory Approvals

Safety

EMC

0 °C to 50 °C, 100% load

–20 °C to 70 °C

30–90% RH (no condensation)

10–95% RH (no condensation)

Up to 6,500 feet (2,000 m)

II (IEC 1010-1)

2 (IEC 1010-1)

8.4 × 1.7 × 19.0 inch (214 × 43.6 × 483 mm)

11 lb (5kg)

Forced air cooling by internal fans

CSA 22.2 No. 61010-1 and UL61010-1. Marked with c(UL)us CE EN61010-1

Complies with EN55022, Class A, FCC Part 15A for conducted emissions

Complies with EN55022, Class A, FCC Part 15A for radiated emissions

Complies with EN61000-4 series of standards for immunity

.30 in.

7.6 mm

Common Specifications for All Models

18.5 in.

469.9 mm

17. 99 in.

456.9 mm

17.32 in.

439.9 mm

18.9 in.

479.9 mm

.60 in.

15.2 mm

.26 in.

6.5 mm x 2

1.98 in.

50.2 mm

1.61 in

40.9 mm

1.72 in.

43.6 mm

1.05 in.

26.8 mm

8.4 in.

214.2 mm

Figure C-1 XG 850 Watt Mechanical Dimensions: 6 to 40 V Models

Optional DC output cover

C

M370078-01 C-7

Specifications

17.6 in.

447.5 mm

8.4 in.

214.2 mm

0.28 in.

7.2 mm

0.22 in.

5.5 mm

1.7 in.

43.6 mm

Figure C-2 XG 850 Watt Mechanical Dimensions: 60 V to 600 V Models

C-8 M370078-01

Sorensen XG 850 Watt Programmable DC Power Supply Operation Manual

Assistant Bot

XG 850 Watt Series

Programmable DC Power Supply

(for firmware version 1.09 and below)

Operation Manua

l

About AMETEK

Trademarks

Notice of Copyright

Exclusion for Documentation

Date and Revision

Part Number

Contact Information

SAFETY SYMBOLS

Product Family: XG 850 Watt Series Programmable DC Power Supply

Warranty Period: Five Years

WARRANTY TERMS

PRODUCT RETURN PROCEDURE

Purpose

Scope

Audience

Conventions Used

WARNING

CAUTION

Related Information

Acronyms

Font Conventions

I1 Introduction

2 Installation

3 Local Operation

4 Analog Programming (APG) and Isolated Analog Programming (ISOL)

5 Remote Operation

6 Calibration and Troubleshooting

A SCPI Command Reference

B Error Messages

C Specifications

Warranty and Product Information

Index

Introduction

Chapter 1, Introduction, describes the features of the XG

850 Watt Series Programmable DC Power Supply.

Features and Options

XG 850 Watt Models

Table 1-1 XG 850 Watt Series Voltage and Current Ranges

Front Panel

Figure 1-1 XG 850 Watt Front Panel

Front Panel Display and Controls

Figure 1-2 Front Panel Display and Controls

Rear Panel Connectors

Figure 1-3 Rear Panel: 6 V to 40 V Models

Figure 1-4 Rear Panel: 60 V to 150 V Models

Figure 1-5 Rear Panel: 300 V to 600 V Models

Installation

Chapter 2, Installation, provides information and

procedures for inspecting, installing, and testing the power supply.

Basic Setup Procedure

Table 2-1 Basic Setup Procedure

Step 1: Inspecting and Cleaning

Initial Inspection

When you first receive your unit, perform a physical check:

Periodic Cleaning

Step 2: Location and Mounting

Rack Mounting

Purchasing Rack Mount Kits

Ventilation

Step 3: Connecting AC Input Power

WARNING: Shock hazard

WARNING: Shock hazard

WARNING: Shock hazard

AC Input Connector

Step 4: Selecting Load Wires

Load Wiring

Insulation Rating

Current Carrying Capacity

Table 2-2 Current Carrying Capacity for Load Wiring

Maximum Load Wiring Length For Operation With Sense Lines

Figure 2-1 Maximum Load Wire Length for 1 V Line Drop

Noise and Impedance Effects

Step 5: Performing Functional Tests