Restart operation function
<Setting>
Refer to the following table and set the parameters:
Parameter
Setting
0.1K to 1.5K Coasting time of 0.5s
0
2.2K, 3.7K Coasting time of 1.0s
57
0.1 to 5s
58
0 to 60s
H6 (162)
H6 = 0, 10 (with speed search)
Instantaneous power
failure (power failure) time
Power supply
(R, S, T)
STF(STR)
Motor speed
(r/min)
Inverter output
frequency
(Hz)
Inverter output
voltage
(V)
Coasting time
Pr. 57 setting
Speed search time
(300ms maximum)
*The output shut off timing differs according to the load condition.
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 magnitude of the moment (J) of inertia of the
load and torque.)
- - -
No restart (factory setting)
Normally the motor may be run with the factory settings. These
values are adjustable to the load (moment of inertia, torque).
With speed search
0
The motor coasting speed is detected after instantaneous power
failure is detected.
Without speed search (factory setting)
Automatic restart operation after instantaneous power failure is a
1
reduced voltage starting system in which the output voltage is
risen gradually at the preset frequency independently of the
coasting speed of the motor.
With speed search at starting
10
The motor coasting speed is detected after instantaneous power
failure and at starting.
*
Restart
voltage
cushion time
Pr. 58 setting
Description
Generally, this setting will pose
no problems.
H6 = 1 (without speed search)
Instantaneous power failure
(power failure) time (0.2s or less)
Power supply
(R, S, T)
STF(STR)
Motor speed
(r/min)
Inverter output
frequency
(Hz)
Inverter output
voltage
(V)
Coasting time
Pr. 57 setting
102
*
Restart
voltage
cushion time
Pr. 58 setting