Automatic Restart After Instantaneous Power Failure/Flying Start Under Ipm; Motor Control (Pr. 57, Pr. 162, Pr. 611) <Ipm - Mitsubishi Electric FR-F720P-0.75K to 110K Instruction Manual

Operation selection at power failure and
instantaneous power failure

4.13.2 Automatic restart after instantaneous power failure/flying start under IPM

motor control (Pr. 57, Pr. 162, Pr. 611)
You can restart the inverter without stopping the motor in the following cases:
When power comes back ON after an instantaneous power failure
When motor is coasting at start
Parameter
Name
Number
57
Restart coasting time
Automatic restart after
162
instantaneous power failure
selection
611
Acceleration time at a restart
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 201)
15ms to 100ms
Power
ON
OFF
supply
IPF
OFF
(2) Connection (CS signal)
When the automatic restart after instantaneous power failure selection signal (CS) is turned on, automatic restart
operation is enabled.
When Pr. 57 is set to other than "9999" (automatic restart operation enabled), the inverter will not operate if used with
the CS signal off.
CAUTION
The CS signal can be assigned to the input terminal using any of Pr. 178 to Pr. 189 (Input terminal function selection). Changing
the terminal assignment may affect the other functions. Set parameters after confirming the function of each terminal.
When automatic restart operation is selected, instantaneous power failure occurrence (E.IPF) among the alarm output
signals will not be provided at occurrence of an instantaneous power failure.
The SU and FU signals are not output during a restart. They are output after the restart cushion time has elapsed.
Automatic restart operation will also be performed after a reset or when a retry is made by the retry function.
166
Initial Value
9999
0
55K or
5s
lower
75K or
15s
higher
(1) Automatic
operation
When instantaneous power failure protection (E.IPF) is activated, the
inverter output is shut off. (Refer to page 316 for E.IPF)
When automatic restart after instantaneous power failure operation is set,
the motor can be restarted if power is restored after an instantaneous power
ON
failure. (E.IPF is not activated.)
When E.IPF is activated, instantaneous power failure signal (IPF) is output.
The IPF signal is assigned to the terminal IPF in the initial setting. The IPF
signal can also be assigned to the other terminal by setting "2 (positive logic)
or 102 (negative logic)" to any of Pr. 190 to Pr. 196 (output terminal function
selection).
IPM IPM IPM
< I P M >
Setting Range
0 No waiting time
Set the waiting time for inverter-
55K or lower 0.1 to 5s
triggered restart after an
75K or higher 0.1 to 30s
instantaneous power failure.
9999 No restart
0, 1 Frequency search at an initial start
10, 11 Frequency search at every start
Set the acceleration time that takes
to reach Pr.20 Acceleration/
deceleration reference frequency setting
0 to 3600s, 9999 at a restart.
When "9999" is set, standard
acceleration time (like Pr.7) is applied
at restart.
restart after instantaneous
Description
power failure