Trip-Less Intensification; Auto-Restart (Restart During Coasting - Toshiba TOSVERT VF-AS1 Instruction Manual

5.18

Trip-less intensification

5.18.1 Auto-restart (Restart during coasting)


Mandatory
• Function
Auto-restart detect the rotating speed and direction of rotation of the motor during coasting or momentary
power failure, to ensure that the motor restarts 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.
Step 1: Set the control method of Auto-restart
5
1) Auto-restart after momentary power failure (Auto-restart function)
: This function operates after power has been restored following detection of an undervoltage by the main
Title

* If the motor is restarted in retry mode, this function will operate, regardless of the setting of this parameter.
* The function (=,,,) is activated when the reset of trip or the control power is turned on.
* The function (=,) is activated when an undervoltage is detected in the main circuit.
: Auto-restart control selection
• Do not go near motors and equipment.
Motors and equipment that have stopped temporarily after momentary power failure will restart
suddenly after recovery. This could result in unexpected injury.
• Attach warnings about sudden restart after a momentary power failure on inverters, motors and
equipment for prevention of accidents in advance.
Input voltage
Motor speed
F-CC
circuits and control power.
Function
:Disabled
:At auto-restart after momentary stop
Auto-restart control
:When turning ST on or off
selection
:   + 
:At start-up
Warning
Adjustment range
E-32
E6581301
ON
OFF
Default setting Setting value
 or 
