Access Power Solutions Installation Guide (APS3-400 Series)
52
Copyright © 2007-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-52D July 2010
Problem
Possible Cause
Required Action
Temperature Compensation is
active and the battery
temperature is below the
reference temperature.
None. This is normal operation (if
batteries are connected). Disable
Temperature Compensation if no
batteries connected.
Equalize or Fast Charge is
active.
None. Output voltage will return to
normal when Equalize or Fast Charge is
completed.
Incorrect float voltage setting at
system controller.
Correct the float voltage setting of the
system controller.
Record new setting.
High system output voltage.
Faulty rectifier.
Locate the rectifier with the highest
output current and remove this one first.
If the first rectifier removed is not faulty,
remove each of the remaining rectifier
modules one at a time, until the faulty
rectifier is found. (The output voltage
returns to normal when faulty rectifier is
removed.)
Replace faulty rectifier with one that is
working.
Return the faulty rectifier for service.
System has no dc output
(rectifiers are on).
Load circuit breaker open.
Check for open circuit breaker.
Battery circuit breaker open.
Check for open battery circuit breaker.
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.
System has no battery input
LVD contactor is open.
Use
DCTools/Web to c
heck 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
.
Check the connections from the battery
bus to the LVD.
The Battery Mid-point
Monitoring system has detected
a voltage imbalance in one of
the battery strings.
See Battery Mid-point Monitoring on
page
.
String Fail Alarm (SC200
only)
A Battery Mid-point Monitoring
sense wire is disconnected.
Check the sense wires.
