Load Protection - GE MOTOR MANAGER 2 Instruction Manual

4 SETPOINTS
RESET ALARMS USING
RESET KEY: ENABLE
PATH: SETPOINTS MM S2: PROTECTION MMMM LOAD PROTECTION
UNDERPOWER ALARM
LEVEL: OFF kW
UNDERPOWER ALARM
DELAY: 10 s
UNDERPOWER TRIP
LEVEL: OFF kW
UNDERPOWER TRIP
DELAY: 10 s
ACCELERATION TIME
ALARM: OFF s
ACCELERATION TIME
TRIP: OFF s
LOAD INCREASE ALARM:
OFF %FLC
GE Power Management
Range: ENABLE, DISABLE
The MM2 will now allow the Acceleration Alarm, Open Control Circuit
Alarm, Motor Greasing, Contactor Inspection and Motor Stopped Time
Alarms to be reset using the Faceplate Reset Key. All other alarms will
reset when the Alarm condition clears.
Range: 0.2 to 1100.0 kW or OFF; Step: 0.1 kW
Appears if VT PRIMARY VOLTAGE is not set to OFF. This feature functions
the same as the Underpower Trip feature but produces an alarm indica-
tion instead of a trip.
Range: 1 to 60 seconds; Step: 1 second
Appears if VT PRIMARY VOLTAGE and UNDERPOWER ALARM LEVEL are not
set to OFF. Enter a delay for activation of the Underpower Alarm.
Range: 0.2 to 1100.0 kW or OFF; Step: 0.1 kW
Appears if VT PRIMARY VOLTAGE is not set to OFF. For applications such
as pumps, the Underpower Trip feature or the Undercurrent Trip feature
can be selected to detect loss of load. The advantage of the Under-
power Trip feature is that it allows for more accurate sensing if the loss
of load results in only a small change in current and a power factor shift.
If the power remains below this value while the motor is running for the
time specified in UNDERPOWER TRIP DELAY, the MM2 will trip. Set this
value to OFF if no Underpower Trip is required.
Range: 1 to 60 seconds; Step: 1 second
Appears if VT PRIMARY VOLTAGE and UNDERPOWER TRIP LEVEL are not set
to OFF. Set the UNDERPOWER TRIP DELAY long enough to prevent nui-
sance trips from momentary power dips.
Range: 0.5 to 125.0 seconds or OFF; Step: 0.5 second
Enter a time longer than the actual acceleration time of the motor. This
is defined as the length of time required for the average motor current to
drop below Full Load Current after a start command.
Range: 0.5 to 125.0 seconds or OFF; Step: 0.5 second
Enter the maximum allowable acceleration time of the motor. This is
defined as the length of time required for the average motor current to
drop below Full Load Current after a start command.
Range: 20 to 130% FLC or OFF; Step: 1% FLC
Set to a suitable level if a warning is required when motor current is
approaching, or in, an overload condition. When current exceeds this
value, a Load Increase Alarm will occur. Set to OFF if not required.
MM2 Motor Manager 2
4.3 S2 PROTECTION

4.3.7 LOAD PROTECTION

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