Eaton APS3-300 Installation And Operation Manual page 61

Problem
I/O board Power/Comms
OK LED is off
I/O board Power/Comms
OK LED is flashing.
LVD Status LED(s) (on I/O
board) are on.
LVD Status LED(s) are off
(I/O board Power On LED is
on).
LVD Status LED(s) flashing.
LVD contactor(s) not
operating.
Copyright © 2007-2012 Eaton Corporation. All Rights Reserved.
Possible Cause
I/O board is not powered or
faulty.
I/O board is responding to an
Identify command from the
SC200 or SC100.
LVD contactor is energized.
LVD contactor is de-energized.
The contactor is in the wrong
state (SC200 or SC100 internal
state does not match signal from
contactor auxiliary switch).
LVD Type setting is incorrect.
LVD settings incorrect.
Contactor is disconnected.
IPN 997-00012-48D November 2012
Required Action
Check connection to YH3 on I/O board.
See Connections on page 8.
Replace I/O board if faulty.
None, this is normal operation. See
details in the System Controller
Operation Handbook.
None, this is normal operation.
None, this is normal operation.
Check the electrical and mechanical
operation of the contactor and auxiliary
switch.
Check all wiring and connectors. See
Connections on page 8.
Check LVD Type setting.
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).
Check the control and dc power cables
are connected. See details on page 8.
Maintenance
55