CX 4 8 Instructions

CX 4 8 Instructions
 CX Commercial Lighting Control Panels – 4 and 8 Relay
Installation Instructions
Hubbell Building Automation
9601 Dessau Road  Building One  Suite 100  Austin, TX 78754
Toll Free: 888-698-3242  Fax: 512-450-1215
These instructions include information as follows:
Product Configurations
Enclosure Mounting
Installing individual Relay Cards
Connecting Panel Power
Connecting Lighting Loads
Connecting Low Voltage Inputs
Operating the Panel
Panel Specifications
Panel Load Schedule Form
CAUTION - RISK OF ELECTRICAL SHOCK. To prevent electrical shock, turn off power at the circuit
breaker before installing or servicing unit. Never wire energized electrical components.
NOTICE: For installation by a licensed electrician in accordance with National and/or local Electrical Codes
and the following instructions.
Be sure to read and understand all instructions before installing or servicing unit
Do not operate unit with panel door assembly or relay guard covers removed.
For Indoor use only. Do not use outdoors.
Do not mount near gas or electric heaters.
Disconnect switch or a circuit breaker must be provided and marked as the disconnecting device.
The use of accessory equipment not recommended by the manufacturer may cause an unsafe condition.
Confirm that device ratings are suitable for application prior to installation.
No user serviceable parts contained inside unit. Refer all service related questions to the factory. All servicing
shall be performed by qualified service personnel.
Equipment should be mounted in locations and at heights where it will not readily be subjected to tampering by
unauthorized personnel.
Use only approved materials and components (i.e. twist on connectors, electrical box, etc.) as appropriate for
NOTICE: Do not install if product appears to be damaged.
If the equipment is used in a manner not specified by the manufacturer, the protection provided by the
equipment may be impaired.
Do not use this equipment for other than intended use.
The CX Panel is shipped in one package. Panels are configured with all 4 or 8 relays of the same type installed or
with space only for relays to be installed in the field. The eight relays are mounted with lighting circuit terminals in
the high voltage area. The low voltage control inputs are located in the low voltage area of the panel. The following
information describes the CX 4 and 8 relay panel installation. For programming information, refer to the “CX Panel
Programming Guide” provided as a separate document with the Panel.
04 4 Relay
08 8 Relay
Input Voltage
2 120-208-220277VAC
3 120-347VAC
S Surface
Relay Quantity
00 No relays
04 4 Relays
08 8 Relays
Relay Type
2N 20A, 1P, NO
Elect Held
3L 30A, 1P,
TN 20A, 2P, NO
Elect Held
2C 20A, 1P, NC
Elect Held
SP Space Only
N Stand Alone (4Relay ONLY)
M Master (8
Relay ONLY)
S Secondary (8
Relay ONLY)
Example: CX082S08R2NM - CX 8 Relay Panel, 120/208/220/277VAC input, with 8 20A/1P NO Electrically
Held Relays installed in NEMA 1 Surface Mount Master Panel.
Panels are available fully populated with a single relay type or with SP option (Space Only) to allow for field
installation of individual relays. This is the methodology to provide for panels with a mix of more than one type of
relay. Relays can be ordered separately as follows:
Relay Type
20A, 1P, NO Elect Held, 120/277VAC
30A, 1P, Latching, 120/277/, 20A 347VAC
20A, 2P, NO Elect Held, 208/240/480VAC
20A, 2P, NC Elect Held, 208/240/480VAC
Typically the CX panel is installed near the circuit breaker panel or in the ceiling of the room containing the lighting
circuits to be controlled. Select an appropriate location that meets the environmental conditions listed in the
specification section of this document. The panel interior is divided into high voltage and low voltage areas as
shown in Figure 1. Select an appropriate location for incoming line voltage panel power, branch circuits to be
controlled and low voltage input wiring. The housing is supplied with conduit knock-outs labeled to indicate line or
low voltage wiring use. All terminations within the panel enclosure require installation by a licensed electrician in
accordance with National and/or local Electrical Codes
Figure 1 – CX Panel Interior
Locate the enclosure on the mounting surface and use a level to ensure that it is properly oriented and aligned.
Secure the enclosure to the mounting surface with hardware as appropriate for the application using the three keyed
mounting holes located near the top corners and in the center bottom of the enclosure as shown in Figure 2.
Figure 2 - Enclosure Mounting Holes
requires different types of relays installed in the same panel then the relays are supplied separately and they will
require field installation. In this application reference the applicable Relay Installation Instructions supplied with the
individual Relay Cards on how to install relays.
Caution: ALWAYS remove supply power to the Panel control Transformer prior to making any connections
between relay boards and panel processor board. Failure to do so may result in personnel injury, damage to the
panel, and void its warranty
The panel is designed to operate on 120, 208, 240, or 277VAC for input voltage “2” designator or 120, 277, or
347VAC for input voltage “3” designator. Panel input power is supplied to the multi-tap transformer located in the
upper center of the panel as shown in Figure 1. With the power turned off, route the dedicated panel power supply
leads to the transformer and connect them to the appropriate system voltage specific leads of the transformer. A
voltage lead color label is located on or adjacent to the transformer. Connect the power supply ground lead to the
panel chassis grounding lug. A label indicating this ground lug is located adjacent to the connection location.
Caution: When power is applied to the transformer, the unused transformer leads become electrified. Cap unused
transformer leads with wire nuts to prevent electrical shorting.
With the power turned off, route the lighting system line and load leads through the high voltage area of the panel
shown in Figure 1. Connect line and load leads for each lighting load to the output terminals of the appropriate relay
as delineated in the project plans and/or Panel Load Schedule. Space is provided for the circuit identification number
to be written adjacent to the terminals on each relay card.
Notice: As a general rule, the panel is shipped with relays installed and electrically connected at their input
control side. If, however, relays must be installed, reference the applicable Relay Installation Instructions
supplied with the individual Relay Cards on how to install relays.
Caution: Prior to making any connections to the relay outputs, verify that none of the loads are shorted. Failure
to do so may result in personnel injury, damage to the panel, and void its warranty
Notice: If no Panel Load Schedule exists, use the Panel Load Schedule Form supplied in the clear plastic pocket
inside the Panel Door to record the lighting circuit relay assignments while connecting the relays
Bring the low voltage wiring for the contact inputs in through the knockouts in the low voltage wiring area where
indicated in Figure 1. The CX 4 Relay Panel supports six inputs and the CX 8 Relay Panel supports 12 inputs. Inputs
are software configurable through programming to support momentary switches, maintained switches (latching),
motion sensors, or photocells. Each Relay Card includes one low voltage input. The panel mother board includes 2
Auxiliary Inputs for the CX 4 Relay Panel and 4 Auxiliary Inputs for the CX 8 Relay Panel. These inputs may be
connected prior to programming. Inputs may be connected to any terminal location regardless of final control
programming. Connect contact closure input devices to the input terminals using 18 AWG wire.
Notice: Use the Panel Load Schedule Form supplied in the clear plastic pocket inside the Panel Door to record
the low voltage input types while making connections.
Low Voltage Control Diagrams shown in Figure 3 below are for use with Hubbell Building Automation Input
Devices ONLY. Diagrams may not apply to input devices from other manufacturers.
Figure 3 - Low Voltage Input Wiring Diagrams
Connect the User Interface control ribbon cable to the User Interface Ribbon Cable Connector on the Mother Board
where shown in Figure 4. The User Interface control ribbon cable is supplied connected to the User Interface
Module that is attached to the panel door. Connect the green ground jumper to the panel housing ground lug, labeled
“GND” with the hardware provided. The green ground jumper is supplied attached to the panel door. Provide
control power to the panel and restore power to the lighting circuits at the source circuit breakers. The panel will
take a few moments to initialize during which time the User Interface screen on the front of the panel door will
initiate and display the clock, date, and time zone un-programmed factory defaults. Inside the panel the Mother
board power status LED will show continuous “green”. The Relay board status LED will turn on “green” for
approximately 2 seconds and then go off. Push. But do not hold the Relay Manual Control button on each relay card
to operate each relay to test functionality. The Relay State Status LED will turn on “red” when the relay is energized
and be off when the relay is un-energized. The panel is now fully functional and ready to control the lighting loads.
Figure 4 - Panel Start-Up Controls
A blinking “green” Relay board status LED indicates that communication has not been properly established for this
card. Contact Hubbell Building Automation Technical Service at (888) 698-3242 for assistance and replacement as
required. A complete Troubleshooting Guide is contained in the “CX Panel Programming Guide” provided as a
separate document with the Panel.
Panel Input Power Requirements:
o Input Voltage “2” designator – 40VA, 120, 208, 240, or 277VAC
o Input Voltage “3” designator – 40VA, 120, 277 or 347VAC
Overall Dimensions:
o Surface mount, 14.5” W x 17” H x 3.5” D.
Relay Load Ratings:
o CXR2N – 120/277VAC, Electrically Held, NO, 20Amps, HID and Fluorescent Ballast 15Amps
Tungsten (120V only), 3/4HP at 120V and 277V,
o CXR3L – 120/277/347VAC, Latching, 30Amps, HID and Fluorescent Ballast at 120/277 VAC, and
20A mps Tungsten at 120VAC, 1HP at 120V, and 20Amps, HID and Fluorescent Ballast at 347V
o CXRTN – 208/240/480VAC, Electrically Held, NO, 20Amps, HID, Ballast, 2HP
o CXRTC – 208/240/480VAC, Electrically Held, NC, 20Amps, HID, Ballast, 2HP
Low Voltage Inputs:
o CX 4-Relay Panel – Six available inputs
o CX 8-Relay panel – 12 available inputs.
o Low Voltage Switches – 2 or 3 wire momentary or maintained style, with or without LED indication.
LED indication support is LED – “ON” when switch is active and LED – “OFF” when switch is
inactive. Green “ON” with Red “OFF” indication is not supported.
o Motion Sensor Input – Three wire 24 VDC, Maximum of 4 sensors can be connected to 4-Relay Panel
and 8 sensors for 8-Relay Panel
o Photocell – Four wire 24VDC power, 0-10V DC control input.
Output Relay Contacts
o Two each for 8-Relay panel only – Dry Contact Output, NO/NC, 24V AC/DC, 50mA
Operating Environment:
o Indoor Use Only; 0 to 50°C; Relative Humidity: 0 – 90% non-condensing.
A Panel Load Schedule Form is supplied in the clear plastic pocket inside the Panel Door to record the lighting
circuit relay assignments while connecting the relays. Low voltage input types and assignments should also be
recorded on the form.
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