Control Keys; Led Indicators - GE MM300 Instruction Manual

CHAPTER 3: INTERFACING WITH THE MM300

Control keys

LED indicators

MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
When a lockout occurs that clears when a count-down timer expires or when the thermal
capacity recovers for a restart, the Status > Message page is displayed indicating timer
value or thermal capacity.
The MM300 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 MM300
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 MM300 faceplate
(if MCC control is enabled). The start A and start B sequences can also be initiated via
communications, field control, or hardwired input.
The control panel LEDs summarize the status of the device and up to three user-
programmable parameters. The LED colors can be independently configured by the user
to display either red, orange, or green, as required by local operating conventions. The
following LEDs are available for the MM300.
• Running LED: Indicates that the motor is running. It will be on whenever the contactor
A or B relays are closed and the contactor status inputs acknowledge the correct
state. Current flow does not affect the indicator.
• Stopped LED: Indicates that the motor is stopped based on both contactors A and B
being de-energized.
• Tripped LED: Indicates that the A and B contactor relays are de-energized. The motor
cannot be restarted as long as this indicator remains on.
• Alarm LED: Indicates that an alarm condition is present.
• Auto LED: Indicates if the MM300 is in auto control mode.
• Manual LED: Indicates if the MM300 is in manual control mode.
• Comms OK LED: Indicates the status of selected communication interface activity.
User can select an individual or a combination of communications interfaces by
configuring the "Comms OK Evaluation" (Modbus address 40517, 0204H) setpoint,
under \\home\setpoints\configure\Comms. If all interfaces are communicating, then
the LED is green. If all interfaces are failed, then the LED is red. If one or more, but not
all, interfaces are failed, then this LED is orange.
• User 1 to User 3 LEDs: These LEDs can be programmed by the user to indicate any
digital condition.
GRAPHICAL CONTROL PANEL
3–5