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Restart operation parameters
2
FUNCTIONS
<Setting>
Refer to the following table and set the parameters:
Parameter Setting Description
57
0
0.1K to 1.5K Coasting time of 0.5s
Generally, this setting will pose
no problems.
2.2K, 3.7K Coasting time of 1.0s
0.1 to 5s
Waiting time for inverter-triggered restart after power is restored
from an instantaneous power failure. (Set this time between 0.1
and 5s according to the moment (J) of inertia and torque of the
load.)
58
- - - No restart (factory setting)
0 to 60s
Normally the motor may be run with the factory settings. These
values are adjustable to the load (moment of inertia, torque).
H6 (162)
0
With speed search
The motor coasting speed is detected after instantaneous power
failure is detected.
1
Without speed search (factory setting)
Automatic restart operation after instantaneous power failure is a
reduced voltage starting system in which the output voltage is
risen gradually at the preset frequency independently of the
coasting speed of the motor.
10
With speed search at starting
The motor coasting speed is detected after instantaneous power
failure and at starting.
*The output shut off timing differs according to the load condition.
Instantaneous power
H6 = 0, 10 (with speed search)
failure (power failure) time
STF(STR)
Motor speed
(r/min)
Inverter output
frequency
(Hz)
Inverter output
voltage
(V)
Speed search time
(300ms maximum)
Coasting time
Pr. 57 setting
Restart
*
voltage
cushion time
Pr. 58 setting
(R, S, T)
Power supply
Instantaneous power
H6 = 1 (without speed search)
failure (power failure) time
STF(STR)
Motor speed
(r/min)
Inverter output
frequency
(Hz)
Inverter output
voltage
(V)
Coasting time
Pr. 57 setting
Restart
voltage
cushion time
Pr. 58 setting
(R, S, T)
*
Power supply