Lucent Technologies Lineage
®
2000 ECS-6 Controller J85501D-1
Issue 6 August 1998
Acceptance Testing 5 - 9
Low Voltage
Battery
Disconnect Test
If the plant is not equipped with a low-voltage battery
disconnect contactor, skip this test.
1. Identify the LV- lead at P501-6 (for -48V or -24V
controllers) or the LV+ lead at P501-8 (for +24V
controllers) of the CP5 LVD/Fuse Board. Follow this lead
through its wire form on the door to its termination on a
quick-disconnect tab terminal on the battery bus of the
plant distribution panel. Disconnect this lead at the battery
bus and observe the following:
• The LVD contactor opens.
• The LVD OPEN LED on the front of the CP5 card
activates.
• The MNF LED of the ECS-6 activates.
• Alarm contacts TB102/10-11 on CP1 of the ECS-6
controller close.
2. Connect a 0-60V variable power supply from the plant
ground bus to the disconnected LV- (or LV+) lead, along
with a voltmeter. Turn on the power supply and adjust its
output to 48V (24V). Observe the following:
• The LVD contactor closes.
• The LVD OPEN LED on the front of the CP5 card
retires.
• The MNF LED of the ECS-6 retires.
• Alarm contacts TB102/10-11 on CP1 of the ECS-6
controller open.
3. Check the locations of the jumpers P505.1 and P505.2 on
the rear of the CP5 LVD/Fuse Board. For 48V plants,
place both jumpers across pins 1 and 2 for a threshold of
42.5 ±0.5V or across pins 2 and 3 for a threshold of 40.5
±0.5V. For 24V plants, place both jumpers across pins 1
and 2 for a threshold of 21.25 ±0.25V or across pins 2 and
3 for a threshold of 20.25 ±0.25V. Slowly lower the power
supply voltage toward the selected threshold.
