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Functional Descriptions (By Parameter No.)

RIDE-THROUGH RESTART (Parameter No. 51)

ATTENTION

* Depending on the RIDE-THROUGH restart function settings, the motor mat restart suddenly after the power is restored.

(Ensure personal safety before restarting.)
Failure to do so could lead to injury.
Used to select the restart mode after an instantaneous power failure occurs, according to the load conditions and system. A wait timer function is built-in.

Inverter operation in regard to instantaneous power failure time

Data setting value

Min. 15msec ot less (Note 1)

Min. 15 msec is exceeded (Note 1)

Min. 100msec or less (Note 2)

Min. 100msec is exceeded (Note 2)

Operation continues

LU trip occurs, and the operation takes place according to the details set in the start mode.

"LU" is saved in the fault memory.

Operation continues

Restarts from Ohz after the wait time has elapsed.

"LU" is saved in the fault memory.

Operation takes place according to the details set in the start mode.

Operation continues

motor speed is detected after the wait time has elapsed, and the inverter restarts at a frequency corresponding to the speed.

"LU" is saved in the fault memory.

Notes)

1. This is the min. time for operation at the rated output current. This time may be longer depending on the model.)

2. This is the min. time. (This time may be longer if the rated capacity is larger.) Even if the power failure time is relatively long (approx. 1 min.), the inverter may restart after the power is restored. Thus, wait at least four min. (wait time + 2 min.) after the power is restored before handling the inverter, motor or load facility.

3. The wait time can be set between 0.1 to 100 sec. with parameter No. 52.

(When voltage loss time is more than 15msec but less than 100msec.)

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