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CHAPTER 2: INSTALLATION
MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
When the power to the MM3 Motor Manager 3 is interrupted, all output relays on the MM3
Motor Manager 3 will de-energize causing them to open and stop the motor. The MM3
Motor Manager 3 can only be wired for fail-safe operation.
If feedback is not received from the S or R contacts to the Contactor A or B Status N.O.
inputs within one second of closing Contactor A or B output relays, an open control circuit
alarm will occur. This will cause contactor A and B output relays to open. If feedback
remains at the Contactor A or B Status N.O. input more than one second after opening the
contactor A or B output relays, a welded contactor alarm will occur.
Figure 2-13: Slip Ring Starter
GE POWER MANAGEMENT
STARTER TYPES
2–17
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