Access Power Solutions Installation and Operation Guide (APS6-300/500 and APS12-300 Series)
98
Copyright © 2007-2013 Eaton Corporation. All Rights Reserved.
IPN 997-00012-49G May 2013
Test
Test procedure
Adjustment
Automatic
Operation
Note 7
Reduce the system voltage below the
LVD Disconnect Voltage
Threshold
.
Wait for the configured
Recognition Period.
Ensure the LVD disconnects.
Ensure the SC200 or SC100 displays an
LVD Disconnected
alarm
Ensure the I/O board LVD LED is off.
Increase the system voltage above the configured
Reconnect
Voltage
.
Wait for the configured
Recognition Period.
Ensure the LVD connects.
Ensure the SC200 or SC100 shows no LVD alarms.
Ensure the I/O board LVD LED is on.
Low Voltage
Disconnect – Alarms
Note 7
Disconnect each LVD control cable from the I/O board.
Ensure the SC200 or SC100 displays an
LVD Fail
alarm.
Ensure the I/O board LVD LED is flashing.
Reconnect the cables.
Ensure the LVD connects.
Ensure the SC200 or SC100 shows no LVD alarms.
Ensure the I/O board LVD LED is on.
None
Notes
1
AVC must be enabled. Allow up to 1 minute for the system to stabilize after load or voltage
changes.
2
Breathing on the sensor can increase the temperature.
3
Battery Current Limit control process may have to be turned off to allow the Fast Charge
voltage to reach its value within the 1 minute test duration.
4
For details see Generator Control Option in the System Controller Operation Handbook.
5
There may be slight current fluctuations above and below the configured current limit
setting. This can be due to the current control within the factory preset deadband.
Confirmation of this control process may be witnessed in the Fast Charge test.
6
There may be a delay of up to 2 minutes before the currents stabilize between rectifiers.
7
There may be a delay of up to 10 seconds before the LVD changes state.
APS systems may not display a Manual Connect alarm on the SC200 or SC100 if the system
voltage is above the LVD disconnect voltage.
Perform the test on each LVD control module within the system.
For manual LVD operation see details in the System Controller Operation Handbook.
For an explanation of LVD LED indications see Troubleshooting on page