GE Energy
D20/D200
Installation and Operations Guide
General 994-0078-2.00-7
Full
95
Power-up and Test, continued
Testing
Redundancy
If you have a D20/D200 redundant system, you must test:
• CCU A and CCU B are communicating
• fail-over is functioning correctly.
Procedure
Follow these steps to check that CCU A and CCU B are communicating once you
have powered-up the Primary and Secondary units:
Step Action
1
On the front of the RS-232 Panel, check that CCU A LED is
illuminated, which shows that CCU A is Active.
Note
: Both the PWR A and PWR B LEDs should be illuminated.
2
Connect a WESMAINT II+ cable to the female DB-9 WESMAINT II+
port on the front panel of the Active D20ME/ME II Master board.
3
Attach the other end of the WESMAINT II+ cable to the serial
communications port of the PC or terminal.
4
Login to WESMAINT through the emulator you are using.
Result:
The WESMAINT Main Menu is displayed.
5
Check to see that STNBY shows at the top-left of this WESMAINT
screen.
Results:
If this text shows, then the Primary and Secondary CCU are
communicating.
If this text does not show, then the Primary and Secondary are
not communicating.
Note:
STNBY will appear on the Active CCU WESMAINT Main Menu display
approximately one minute after power-up of the two units. Wait for this message to
appear before using this procedure.
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