Toshiba TOSVERT VF-AS3 Instruction Manual page 233

5. 4. 2 Restarting smoothly after momentary power failure
• When the auto-restart after momentary stop function is selected, stand clear of motors and
machines at momentary power failure.
The motors and machines which have stopped due to momentary power failure will restart
suddenly after power is restored, and this will result in injury.
• Attach caution labels indicating functions programmed for Auto restart, on inverters, motors and
Mandatory
action
machines.
Please prevent accidents with the caution labels.
<F301: Auto-restart>
■ Function
The motor that is coasting due to momentary power failure is accelerated immediately after the
power is restored (auto-restart function).
In addition, this parameter detects the motor speed and direction of rotation of the motor during
coasting at the time of startup, and allows switching from commercial power operation to inverter
operation without stopping the motor(motor speed search function).
■ Parameter setting
Title Parameter name
F301 Auto-restart
■ Selecting a setting value
1: Power failure
The motor that is coasting due to momentary power failure is accelerated immediately after the
power is restored.
It is operated after power is restored after power circuit undervoltage is detected. Turn on the run
command.
CAUTION
F301 : Auto-restart
0: Disabled
1: Power failure
2: Terminal ST On/Off
3: ST On/Off or power failure
4: At startup
Adjustment range
0: Disabled
1: Power failure
2: Terminal ST On/Off
3: Terminal ST On/Off or power failure
4: At startup
5-67
5. [Fundamental operation] How to use parameters
E6582062
STOP 0.0Hz
15:35
Default
setting
0
3
4
5
9