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GE MM300 Instruction Manual Page 165

Motor management system low voltage motor protection and control.
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CHAPTER 5: SETPOINTS
MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
The auto/manual control element includes non-volatile latches that hold the auto and
manual mode states. Besides supervising controls from the sources, the latches drive auto
and manual indicators on the MM300 control panel. The latches can be controlled either
by an external auto switch contact or by the control panel.
When configured for Auto/Man switch contact, auto is on when the contact is closed
energizing the input, and manual is on when the contact is open.
When a switch contact is configured for auto/manual, the front panel auto/manual
pushbuttons are inoperative. When no switch contacts are configured, but the
setpoint is "Enabled", the control panel auto and manual keys will
Auto/Manual Key
switch the mode between auto and manual.
When no input is configured for auto or manual, and the
setpoint is "Disabled", both auto and manual modes are set on.
The Auto and Manual modes are temporarily forced to settable states when the test switch
is on.
The following setpoints are available for the auto/manual control element.
[Path: Home > Setpoints > Control > Starter]
Comms Start Ctrl
Range: Enabled, Disabled
Default: Disabled
Sets whether start commands are accepted via communications.
Comms Stop Mode
Range: Always Enabled, Follow Ctrl Mode
Default: Always Enabled
If set to "Always Enabled", communication stops will always be honoured, irrespective of
the
Comms Start Ctrl
setpoint and auto/manual mode. If set to "Follow Ctrl Mode",
communication stops will be supervised by auto/manual and by communication
permissive in the same manner as the starts.
Comms Stop Action
Range: Stop, Trip
Default: Stop
Defines whether comms control trips (reset required to clear) or stops (no reset required).
Hard Wired Start Ctrl
Range: Enabled, Disabled
Default: Disabled
Sets whether start commands are accepted from hard wired start contact inputs.
Hard Wired Stop Mode
Range: Always Enabled, Follow Ctrl Mode
Default: Always Enabled
If set to "Always Enabled", hard-wired stops will always be honoured, irrespective of the
setpoint, auto/manual mode and permissive. If set to "Follow Ctrl
Hard Wired Start Ctrl
Mode", hard-wired stops will be supervised by auto/manual and by hard-wired
permissive in the same manner as the starts.
Hard Wired Stop Actn
Range: Stop, Trip
Default: Stop
Defines whether hard wired stop control trips (reset required to clear) or stops (no reset
required).
CONTROL ELEMENTS
MCC
MCC Auto/Manual Key
5–55

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