Eaton SC100 - Page 64

SC100 Handbook
58
Copyright © 2008-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-63C August 2011
Problem
Possible Cause
Required Action
LVD Status LED(s) flashing.
The contactor is in the wrong
state (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 4.
LVD Type setting is incorrect.
Check LVD Type setting.
LVD contactor(s) not
operating.
LVD settings incorrect.
Use DCTools to check LVD is enabled and
set to correct values. Check that the LVD
manual control is set to AUTO. See
details on page 29.
LVD contactor is disconnected.
Check that the LVD control and dc power
cables are connected. See details on page
4.
System has no dc output
(rectifiers are on).
Load fuse or circuit breaker
open.
Check for open fuse or circuit breaker.
LVD contactor has disconnected
the load.
Use DCTools to check LVD is enabled and
set to correct values. (LVD status LED on
the I/O board is on when contactor is
energized.)
Check that the I/O board is connected
(Power LED is on).
Check that the LVD control and power
cables connections on page 4.
Check the connections from the load bus
to the LVD.
System has no battery input
Battery circuit breaker or fuse
open.
Check for open battery circuit breaker or
fuse.
LVD has disconnected the
battery because ac supply is off
and the battery is fully
discharged.
None. The battery will be automatically
reconnected when the ac supply is
restored.
LVD contactor is open.
Use DCTools to check LVD is enabled and
set to correct values. (LVD status LED on
the I/O board is on when contactor is
energized.)
Check that the I/O board is connected
(Power LED is on).
Check that the LVD control and power
cables are connected. See Connections on
page 4.
Check the connections from the battery
bus to the LVD.