GE MM200, Инструкция по эксплуатации

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CHAPTER 3: CONTROL PANEL GRAPHICAL CONTROL PANEL
MM200 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL 3–7
Control keys
The MM200 has three large direct control keys: START A, START B, and STOP.
•
STOP: The STOP key allows the user to stop the motor directly from the MM200
faceplate interface. Pressing this key causes the contactor A and contactor B output
relays to de-energize, therefore dropping out the motor contactor.
• START A and START B: Pressing these keys initiates the programmed start sequence.
The START A and START B keys are used to start the motor from the MM200 faceplate
(if MCC control is enabled). The start A and start B sequences can also be initiated via
communications, field control, or hardwired input.
Out-of-service
maintenance
1. Check wiring connections for firmness.
2. Analog values (currents, voltages, RTDs, analog inputs) injection test and metering
accuracy verification. Calibrated test equipment is required.
3. Protection elements setting verification (analog values injection or visual verification
of setting file entries against relay settings schedule).
4. Contact inputs and outputs verification. This test can be conducted by direct change
of state forcing or as part of the system functional testing.
5. Visual inspection for any damage, corrosion, or dust.
FASTPATH:
To avoid deterioration of electrolytic capacitors, power up units that are stored in a de-
energized state once per year, for one hour continuously.