Access Power Solutions Installation Guide (APS6-400 Series)
64
Copyright © 2009-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-53B December 2010
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.
Step 4 - Service or replace faulty cell/monobloc (if required)
1
If the alarm is still present then follow the battery manufacturer’s instructions on
servicing or replacing the faulty cell/monobloc.
2
After the faulty cell/monobloc has been serviced or replaced clear the alarm (see
Step 3).
Procedure complete
Battery Disposal and Recycling
Follow Environmental Protection Agency (EPA) guidelines or the equivalent local regulations
to dispose of all batteries. Please remember that the owner is responsible and liable to ensure
those EPA guidelines or equivalent local regulations are followed.
For assistance contact your local hazardous waste center or Worldwide Support on page
