Auto-Restart (Restart Of Coasting Motor - Toshiba VF-S15 Instruction Manual

5.9

Auto-restart (Restart of coasting motor)

f301 : Auto-restart control selection
 Stand clear of motors and mechanical equipment
Mandatory
 Attach caution label about sudden restart after a momentary power failure on inverters, motors and
action
 Function
The f301 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 switching from commercial power
operation to inverter operation without stopping the motor.
During operation, "rtry" is displayed.
[Parameter setting]
*
1)
Setting f301 to 1 or 3: This function operates after power has been restored following detection of an
undervoltage by the main circuits and control power.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
If the motor stops due to a momentary power failure, the equipment will start suddenly when power is
restored.
This could result in unexpected injury.
equipment for prevention of accidents in advance.
Title Function
Auto-restart control
f301
selection
If the motor is restarted in retry mode, this function will operate, regardless of the setting of this parameter.
Auto-restart after momentary power failure (Auto-restart function)
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
ON
OFF
E-21
E6581611
5
Default setting
0