ABB GPS2436 User Manual page 69

Rectifier Fail Alarm
The RFA alarm was observed during the High Voltage Shutdown Test so no separate test is required.
Major Fuse Alarm
Major Fuse Alarm may be tested by placing a blown fuse in the alarm fuse position of any distribution fuse position in the plant
or by inserting a paper clip into the alarm indicating hole of its fuse holder.
For distribution circuit breakers, temporarily connect the pins 8 and 9 of any KS22010 or KS22012 style circuit breakers together.
This is accomplished on the ED83143-30 circuit breaker panels by shorting the (-) panel bus to pin 1 on the P4 connector of its
BNL1 alarm board.
Observation:
• The DIST and MAJ LEDs and Power Major and MJF alarm relays will be active.
• Remove alarm condition and verify that DIST,MAJ LEDs and MJF relay retire.
Alarms should be tested in each distribution bay of the plant to verify the integrity of the alarm bus throughout the plant.
If the distribution bays are equipped with "Bay Fuse Alarm" indicating LEDs, also verify that this LED activates during these
tests for the bay in which the alarm originates (and not in any other).
Clear History
This feature is useful when there is a need to remove unnecessary historical data from the controller. An example might be
after installation and testing and the controller is ready for operation. There may be history that is of no use to the customer.
Also, since the history log has a finite number of entries, user can save the history using a PC, and then clear the logs.
Step
1. From the Default Screen, press the Menu button for the Main Menu.
2. Using the Up/Down Arrows, Scroll to Control/Operations and press Enter.
3. Select Clear History, and press Enter.
4. Press Enter again to clear the History Log, or Escape to return to the menus.
Page 69
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Control / operations
Start Lamp Test
Restart Rectifiers
Clear Events
Clear History
Action
GPS2436_MAN Rev. 1.3