Enterprise Power Solutions Installation and Operation Guide
56
Copyright © 2008 Eaton Corporation. All Rights Reserved.
IPN 997-00012-56C September 2008
Replacing the System Controller
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 need
•
A PC/laptop with the latest version of
DCTools
software installed and a connection
cable.
See Communications Options in the System Controller Operation Handbook.
•
A replacement SC200 or SC100 system controller.
A new system controller is factory loaded with a 48V (nominal) default 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
suit the dc power system. This file will have to be customized for the site.
DCTools 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.
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.
See Backup and Restore on page
Step 2 - Remove the system controller
1
Undo the system controller retaining screw. See the diagram on page
.
2
Partly withdraw the system controller.
3
Label 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.
Step 3 - Insert the new system controller
1
Connect the cable(s) to the rear connectors.
The system controller will start. See Starting the SC200 or SC100 on page
. Various alarms may appear because of incorrect configuration file
settings. Press any key to silence the alarm (SC200 only).
2
Insert the system controller and tighten the retaining screw.
