Trip-Less Intensification; Auto-Restart (Restart Of Coasting Motor); Auto-Restart Control Selection - Toshiba TOSVERT VF-nC3E Instruction Manual

6.13 Trip-less intensification

6.13.1 Auto-restart (Restart of coasting motor)

 : Auto-restart control selection
 Stand clear of motors and mechanical equipment
If the motor stops due to a momentary power failure, the equipment will start suddenly when power is
restored.
Mandatory
This could result in unexpected injury.
action
 Attach warnings about sudden restart after a momentary power failure on inverters, motors and
equipment for prevention of accidents in advance.

6
[Parameter setting]

* If the motor is restarted in retry mode, this function will operate, regardless of the setting of this parameter.
1) Auto-restart after momentary power failure (Auto-restart function)
 Setting  to  or : This function operates after power has been restored following detection of an
undervoltage by the main circuits and control power.
Function
The  parameter detects the rotating speed and rotational direction of the motor during
coasting at the event of momentary power failure, and then after power has been restored, restarts
the motor smoothly (motor speed search function). This parameter also allows commercial power
operation to be switched to inverter operation without stopping the motor.
During operation, "" is displayed. The acoustic noise of the motor could be increased.
Title Function
Auto-restart control
selection
Input voltage
Motor speed
Forward / reverse
Caution
Adjustment range
0: Disabled
1: At auto-restart after momentary stop
2: At ST terminal off and on
3: 1  2
4: At start-up
F-24
E6582233
Default setting
0
ON
OFF