245
5. PARAMETERS
5.7 (H) Protective function parameter
3
4
5
5
5
6
7
8
9
10
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 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 the standard model.
*1 The setting is available only for standard models.
*2 Set Pr.524 after setting Pr.523.
*3 When Pr.523 = "100, 200, 300, 400", the emergency drive is activated regardless of the Pr.524 setting.
Pr. Name Initial value Setting range Description
523
H320
*1
Emergency drive mode
selection
9999 100, 111, 112, 121,
122, 123, 124, 200,
211, 212, 221, 222,
223, 224, 300, 311,
312, 321, 322, 323,
324, 400, 411, 412,
421, 422, 423, 424
Select the operation mode of the emergency drive.
9999 Emergency drive disabled
524
H321
*1*2
Emergency drive running
speed
9999
0 to 590 Hz
*3
Set the running frequency in the fixed frequency mode
of the emergency drive. (when the fixed frequency
mode is selected in Pr.523)
0 to 100%
*3
Set the PID set point in the PID control mode of the
emergency drive. (when the PID control mode is
selected in Pr.523)
9999
*3
Emergency drive disabled
515
H322
*1
Emergency drive dedicated
retry count
1 1 to 200 Set the retry count during emergency drive operation.
9999 Without retry count excess (no restriction on the
number of retries)
1013
H323
*1
Running speed after
emergency drive retry reset
60 Hz 0 to 590 Hz Set the frequency for operation after a retry when any
of E.CPU, E.1 to E.3, E.5 to E.7 occurs during
emergency drive operation.
514
H324
*1
Emergency drive dedicated
retry waiting time
9999 0.1 to 600 s Set the retry waiting time during emergency drive
operation.
9999 As set in Pr.68.
136
A001
MC switchover interlock
time
1 s 0 to 100 s Set the operation interlock time for MC2 and MC3.
139
A004
Automatic switchover
frequency from inverter to
bypass operation
9999 0 to 60 Hz Set the frequency at which the inverter-driven
operation is switched over to the commercial power
supply operation when the condition for electronic
bypass is established during emergency drive
operation.
9999 Without automatic switchover
57
A702
Restart coasting time 9999 0 Coasting time differs according to the inverter
capacity. (Refer to page 448.)
0.1 to 30 s Set the waiting time for the inverter to perform a restart
after the power lost by an instantaneous power failure
restores.
9999 No restart
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