Maintenance
Copyright © 2009-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-53B December 2010
57
Problem
Possible Cause
Required Action
LVD Status LED(s) (on I/O
board) are on.
LVD contactor is energized.
None, this is normal operation.
LVD Status LED(s) are off
(I/O board Power On LED is
on).
LVD contactor is de-energized. None, this is normal operation.
LVD Status LED(s) flashing. The contactor is in the wrong
state (SC200 or SC100 internal
state does not match signal from
contactor auxiliary switch).
Check the electrical and mechanical
operation of the contactor and auxiliary
switch.
Check all wiring and connectors. See
Connections on page
LVD Type
setting is incorrect.
Check
LVD Type
setting.
LVD contactor(s) not
operating.
LVD settings incorrect.
Check LVD is enabled and set to correct
values. See details in the System
Controller Operation Handbook.
Check that the LVD manual control is set
to AUTO. See details in the System
Controller Operation Handbook.
Check that the contactor is correctly
configured and mapped to the I/O
board. See details in the System
Controller Operation Handbook (SC200
only).
Contactor is disconnected.
Check the control and dc power cables
are connected. See details on page
Replacing or Adding a Rectifier
Rectifiers can be replaced without switching off the dc power system and disconnecting the
equipment it powers.
To reduce the risk of electric shock and maintain optimum system cooling, always cover
empty rectifier slots with blanking panels.
To avoid electric shock do not place hands inside the rectifier shelf.
Do not attempt to disassemble faulty rectifiers. Return them (in their original packaging)
with a completed Equipment Incident Report on page
Removing a Rectifier
Step 1 - Undo the rectifier retaining screw
This will release the rectifier from its rear connector.
Step 2 - Pull out the rectifier
The rectifier may be hot, especially after prolonged operation. Use suitable
gloves.
To avoid damage do not rest the rectifier on its connector.
