Access Power Solutions Installation Guide (APS3-400 Series)
64
Copyright © 2007-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-52D July 2010
Step 4 - Characterize LVD(s) (if required)
If the SC200 or SC100 indicates an
LVD Characterization Error
alarm then:
1
On the SC200 go to: Battery > LVDs > LVD x > Not Characterized > Edit, or on
the SC100 go to: Menu > Configuration > LVD1/LVD2.
2
If available, select
Characterize With SC Values
. Press
Enter
. No further action is
needed.
3
If
Characterize With SC Values
is not available, the LVD must be characterized.
This will cause the LVD contactor to disconnect the battery for a few seconds.
The load equipment will be powered by the rectifiers.
•
On the SC200 go to: Battery > LVDs > LVD x > Not Characterized > Edit, or
on the SC100 go to: Menu > Configuration > LVD1/LVD2
•
Select
Characterize
. Press
Enter
.
The LVD contactor will disconnect and connect. When the characterization is
complete the
LVD Characterization Error
alarm will clear.
Procedure complete
Battery Mid-point Monitoring (String Fail) Alarm (SC200 only)
Use the following procedure if a
String Fail
alarm is generated.
Step 1 - Identify the faulty battery string
1
Press any button on the SC200 to silence the alarm.
2
Connect to the SC200 using DCTools/Web. Go to
Batteries
>
Mid-point Monitoring
.
3
Click + to expand the
Mid-point Monitoring
table to identify which battery string
has failed.
Step 2 - Check cell/monobloc voltages
1
Use a suitable voltmeter to measure the individual cell/monobloc voltages.
Measure on the cable lugs and inter-connecting bars so that loose connections
will also be detected.
2
The faulty or poorly connected cell/monobloc has the voltage with the greatest
deviation from the average.
Step 3 - Check cell/monobloc terminals
1
Check the terminal connections of the cell/monobloc are correctly tightened and
clean.
Refer to the battery manufacturer's instructions for correct terminal torque
settings.
2
In DCTools/Web go to
Batteries
>
Mid-point Monitoring.
Click
Clear String Fail
.
3
If the alarm clears then the fault is fixed. No further action is required.
