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Emergency Drive (fire Mode) - Mitsubishi Electric FR-F820-00077 Instruction Manual

Fr-f800 series.
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  • Contents

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Parameters
5.7.8

Emergency drive (Fire mode)

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 pri-
ority. 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 the standard model.
Pr.
523
H320
524
H321
515
H322
1013
H323
514
H324
136
A001
139
A004
57
A702
The setting is available only for standard models.
Set Pr. 524 after setting Pr. 523.
When Pr. 523 = "100, 200, 300, 400", the emergency drive is activated regardless of the Pr. 524
setting.
FR-F800
Initial value
Name
FM
Emergency drive mode
selection
Emergency drive
running speed
Emergency drive
dedicated retry count
Running speed after
emergency drive retry
60 Hz
reset
Emergency drive
dedicated retry waiting
time
MC switchover
interlock time
Automatic switchover
frequency from inverter
to bypass operation
Restart coasting time
Setting range Description
CA
100, 111, 112,
121, 122, 123,
124, 200, 211,
212, 221, 222,
223, 224, 300,
Select the operation mode of the emergency
311, 312, 321,
drive.
9999
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 emergency drive. (when the fixed
0 to 590 Hz
frequency mode is selected in Pr.523)
Set the PID set point in the PID control mode of
9999
the emergency drive. (when the PID control
0 to 100%
mode is selected in Pr. 523)
Emergency drive disabled
9999
Set the retry count during emergency drive
1 to 200
operation.
1
Without retry count excess (no restriction on the
9999
number of retries)
Set the frequency for operation after a retry when
50 Hz
0 to 590 Hz
any of E.CPU, E.1 to E.3, E.5 to E.7 occurs during
emergency drive operation.
Set the retry waiting time during emergency
0.1 to 600 s
drive operation.
9999
9999
As set in Pr. 68.
Set the operation interlock time for MC2 and
1 s
0 to 100 s
MC3.
Set the frequency at which the inverter-driven
operation is switched over to the commercial
0 to 60 Hz
power supply operation when the condition for
9999
electronic bypass is established during
emergency drive operation.
9999
Without automatic switchover
Coasting time differs according to the inverter
0
capacity. (Refer to page 5-423.)
Set the waiting time for the inverter to perform a
9999
0.1 to 30 s
restart after the power lost by an instantaneous
power failure restores.
9999
No restart
(H) Protective function parameter
5 - 167

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