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VF-FS1 Industrial Inverter - Toshiba

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6<br />

6.12 Trip-less intensification<br />

Mandatory<br />

6.12.1 Auto-restart (Restart of coasting motor)<br />

: Auto-restart control selection<br />

Caution<br />

F-34<br />

E6581381<br />

• Stand clear of motors and mechanical equipment<br />

If the motor stops due to a momentary power failure, the equipment will start suddenly when power is<br />

restored.<br />

This could result in unexpected injury.<br />

• Attach warnings about sudden restart after a momentary power failure on inverters, motors and<br />

equipment for prevention of accidents in advance.<br />

• Function<br />

The parameter detects the rotating speed and rotational direction of the motor during<br />

coasting ing the event of momentary power failure, and then after power haas been restored, restarts<br />

the motor smoothly (motor speed search function). This parameter also allows commercial power<br />

operation to be switched to inverter operation without stopping the motor.<br />

During operation, "" is displayed.<br />

Title Function Adjustment range Default setting<br />

<br />

Auto-restart control<br />

selection<br />

0: Disabled<br />

1: At auto-restart after momentary stop<br />

2: When turning ST-CC on or off<br />

3: At auto-restart or when turning ST-CC on or off<br />

4: At start-up<br />

* If the motor is restarted in retry mode, this function will operate, regardless of the setting of this parameter.<br />

1) Auto-restart after momentary power failure (Auto-restart function)<br />

Input voltage<br />

Motor speed<br />

F or R command<br />

ON<br />

OFF<br />

Setting to , (): This function operates after power has been restored following detection of an<br />

undervoltage by the main circuits and control power.<br />

0

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