Toshiba TOSVERT VF-AS3, Instruction Manual

Page: 298 / 622

E6582062 
6. [Advanced] How to use parameters
6-56
4
4
6
9
■ Setting example of <F302: Regenerative power ride-through> = "1"
1) When the power supply is shut off
* Available time to continue the operation varies by the mechanical inertia or load condition.
Perform verification test when using this function.
* Using retry function at the same time enables to automatically restart without failure stop.
When the power supply is shut off during deceleration stop, deceleration stop corresponding to
F302=2 is operated instead of regenerative power ride through.
This function does not work well at high speed in PM control.
Do not set this function in case of PM high speed drive.
2) When a momentary power failure occurs
When a momentary power failure occurs during deceleration stop, the regenerative power ride-
through does not function.
Input power
DC voltage
inside inverter
Motor speed
Coasting
Approx. 100 ms to 10 s
Regenerative power ridethrough control
Input power
DC voltage
inside inverter
Motor speed
Normal acceleration
Ridethrough control