Replacing The System Controller (Some Models Only) - Eaton RM3-400-0330 Installation And Operation Manual

Replacing the System Controller (some models only)

This procedure only applies to RM3-410/420 models (see Model Numbers on page 2).
The SC200 or SC100 system controller can be replaced without switching off the dc power
system and disconnecting the equipment it powers.
Before you start you will require:
A PC/Laptop with DCTools* connected to the system controller or (SC200 only) a web
•
browser* connected to the system controller via an IP network.
*See Communications Options in the System Controller Operation Handbook.
A replacement SC200 or SC100 system controller.
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A new system controller is factory loaded with a 48V (nominal) default configuration file.
DCTools/Web (SC200 only) can be used to modify the configuration file already loaded in a
system controller. However, a system controller configured for a particular nominal system
voltage (48V or 24V) can only be converted to the other nominal system voltage by loading a
new configuration file.
A copy of the appropriate configuration file, either:
•
use the configuration file saved from the existing system controller, or
•
contact your Eaton dc power system supplier to obtain a master configuration file to
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suit the dc power system. This file will have to be customized for the site.
Step 1 - Backup the configuration file of the old SC200 or SC100 if possible
If the old system controller is still operational use DCTools/Web to backup its
configuration file.
Step 2 - Remove the system controller
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Step 3 - Insert the new system controller
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2
See Backup and Restore on page 34.
Undo the system controller retaining screw. See the diagram on page 5.
Partly withdraw the system controller.
Label, and then disconnect the cable(s) from the rear connectors.
When the system controller stops communicating the rectifier output voltage will be
unchanged for 2 minutes. After 2 minutes the rectifier output voltage will change to the
Float Voltage and the rectifier yellow LEDs will flash.
Connect the cable(s) to the rear connectors.
The system controller will start. See Starting the SC200 or SC100 on page 35.
Various alarms may appear because of incorrect configuration file settings. Press
any key to silence the alarm.
Insert the system controller and tighten the retaining screw.
Copyright © 2007-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-62E June 2010
Maintenance
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