Rockwell Automation 20L-RESPRE-A1 User Manual

Installation Instructions

PowerFlex® 700L Liquid-to-Liquid Heat Exchanger Control Board Replacement

ATTENTION: To avoid an electric shock hazard and prevent thermal damage, ensure that all power to the drive power module

and

heat exchanger has been removed before performing any steps of these instructions. Since control wires from the drive are connected to the heat exchanger control board, it is necessary to remove power from the drive as well as the heat exchanger.

ATTENTION: To avoid an electric shock hazard, verify that the voltage on the drive power module bus capacitors has completely

discharged before performing any work on the heat exchanger. After removing power to the drive power module, wait 5 minutes for the bus capacitors to discharge. Remove the front cover of the drive power module (complete cover for Frame 2 drives or lower front cover for Frame 3A and 3B drives). Measure the DC bus voltage at the DC+ TESTPOINT and DC- TESTPOINT sockets on the front of the drive power module. The voltage must be zero.

What This Kit Includes

Tools That You Need

ATTENTION: This heat exchanger control board contains ESD (Electrostatic Discharge) sensitive parts and assemblies. Static

control precautions are required when installing, testing, servicing or repairing this assembly. Component damage may result if ESD control procedures are not followed. If you are not familiar with static control procedures, refer to Allen-Bradley publication 8000-4.5.2, “Guarding Against Electrostatic Damage” or any other applicable ESD protection handbook.

• One replacement control board

• Standard flat blade screwdriver

• #2 Phillips screwdriver

2 PowerFlex® 700L Liquid-to-Liquid Heat Exchanger Control Board Replacement

Step 1: Removing Power from the Drive Power Module

ATTENTION: To avoid an electric shock hazard, verify that the voltage on the drive power module bus capacitors has completely

Remove power before making or breaking cable connections. When you remove or insert a cable connector with power applied, an electrical arc may occur, which can cause personal injury or property damage by:

• sending an erroneous signal to your system’s field devices, causing unintended machine motion

• causing an explosion in a hazardous environment

Electrical arcing causes excessive wear to contacts on both the module and its mating connector. Worn contacts may create electrical resistance.

A. Turn off and lock out input power. Wait 5 minutes.

L1 L2 L3

B. Verify that there is no voltage at the drive power module’s input power

terminals.

C. Remove the front cover of the drive power module (complete cover for

Frame 2 drives or lower front cover for Frame 3A and 3B drives).

D. Measure the DC bus voltage at the DC+ TESTPOINT and DC-

TESTPOINT sockets on the front of the drive power module chassis. The voltage must be zero.

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