Mitsubishi Electric FR-F800 Series Instruction Manual page 280

5.7.8
This function is used in case of emergency such as a fire to forcibly continue inverter operation to drive a motor without
activating protective functions even if the inverter detects a fault. Using this function may cause damage of the motor or the
inverter because driving the motor is given the highest priority. Use this function for emergency operation only. When the
inverter is damaged by a fault, the motor operation can be continued by switching to the commercial power supply operation.
The emergency drive function is available only for standard structure models and IP55 compatible models.
Pr.
523
Emergency drive mode
*1
selection
H320
524
Emergency drive
*1*2
running speed
H321
515
Emergency drive
*1
dedicated retry count
H322
Running speed after
1013
emergency drive retry
*1
H323
reset
Emergency drive
514
dedicated retry waiting
*1
H324
time
136 MC switchover
A001 interlock time
Automatic switchover
139
frequency from inverter
A004
to bypass operation
57
Restart coasting time
A702
*1 The setting is available for the standard structure model and the IP55 compatible model.
*2 Set Pr.524 after setting Pr.523.
*3 When Pr.523 = "100, 200, 300, or 400", the emergency drive is activated regardless of the Pr.524 setting.
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Emergency drive (Fire mode)
Initial value
Name
FM
9999
9999
1
60 Hz 50 Hz
9999
1 s
9999
9999
search engine
Setting range
CA
100, 111, 112,
121, 122, 123,
124,
200, 211, 212,
221, 222, 223,
224,
Select the operation mode of the emergency drive.
300, 311, 312,
321, 322, 323,
324,
400, 411, 412,
421, 422, 423,
424
9999 Emergency drive disabled.
Set the running frequency in the fixed frequency mode of the
*3
emergency drive (when the fixed frequency mode is selected
0 to 590 Hz
in Pr.523)
Set the PID set point in the PID control mode of the
*3
emergency drive (when the PID control mode is selected in
0% to 100%
Pr.523)
*3
Emergency drive disabled.
9999
1 to 200 Set the retry count during emergency drive operation.
Without retry count excess (no restriction on the number of
*3
9999
retries).
Set the frequency for operation after a retry when any of
0 to 590 Hz E.CPU, E.1 to E.3, and E.5 to E.7 occurs during emergency
drive operation.
0.1 to 600 s Set the retry waiting time during emergency drive operation.
9999 The Pr.68 setting is applied to the operation.
0 to 100 s Set the operation interlock time for MC2 and MC3.
Set the frequency at which the inverter-driven operation is
switched over to the commercial power supply operation when
0 to 60 Hz
the condition for the electronic bypass is established during
emergency drive operation.
8888, 9999 Electronic bypass during emergency drive is disabled.
Coasting time differs according to the inverter capacity.
0
(Refer to
Set the waiting time for the inverter to perform a restart after
0.1 to 30 s
restoring power due to an instantaneous power failure.
9999 No restart
Description
page 466.)
5.7 (H) Protective function parameter
1
2
3
4
5
6
7
8
9
10
279
5. PARAMETERS