Distribution alarms, Ac fail alarms – GE Industrial Solutions CPS6000-M2 User Manual

Page 90

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CPS6000-M2 Installation Guide H5694720

Issue 8 January 2008

90

Step

Action

8

Check the voltage readings on the controller display.

The Millennium II is factory configured with a rectifier Float voltage set-point of -
54.50V
Note that if STC is active or if the connected batteries are not fully charged, the voltages
may be lower.

(If possible, open the external battery disconnect prior to making measurements to
eliminate these effects. If QS873 temperature probes have all ready been installed in the
system, then STC may be active. This will be indicated by the Plant Mode “FLOAT –
TEMP COMP”.)

Remove and Replace Rectifier and Verify Results:

9

Remove a rectifier from its slot.

10

Verify the controller LED and display light amber and indicate a missing rectifier
condition.

11

When the controller prompts to remove equipment press enter ■.

12

Verify the controller LED and display light green.

13

Replace the removed rectifier in its original slot.

14

Verify the controller LED and displays remain lit green.

Miscellaneous Alarms (Batteries must be connected)

Distribution Alarms

Step

Action

1

Manually connect a piece of wire from the circuit breaker feed bus to the distribution
alarm strip.

2

Verify an FAJ – Fuse Alarm Major is reported by the controller.

3

Remove the wire. Verify the alarm clears.

4

Repeat test for each distribution panel or sub-system.


ac Fail Alarms

Step

Action

1

Turn off ac circuit breaker feeding a single rectifier.

2

Verify ACF – ac Fail Minor is reported for the correct rectifier ID.

3

Restore ac and verify alarms clear and the controller returns to Normal.

4

Remove ac from two or more rectifiers.

5

Verify ACF2 – Multiple ac Fail Major is reported for the correct rectifier IDs.

6

Turn on ac circuit breaker turned off in Step 1 and verify alarms clear and the controller
returns to Normal.

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