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E6581301!

 

 

 

■ Operations

 

 

I

 

 

 

 

 

 

 

 

 

Warning

 

Reference

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Do not touch inverter terminals when electrical power is applied to the inverter even if the

 

3.

 

 

 

 

motor is stopped.

 

 

 

 

 

 

Touching the inverter terminals while power is connected to it may result in electric shock.

 

 

 

 

 

• Do not touch switches when thands are wet and do not try to clean the inverter with a

 

3.

 

 

 

 

damp cloth.

 

 

 

 

 

 

Such practices may result in electric shock.

 

 

 

 

 

• Do not go near the motor in alarm-stop status when the retry function is selected.

 

3.

 

 

 

 

The motor may suddenly restart and that could result in injury.

 

 

 

 

 

 

Take measures for safety, e.g. attaching a cover to the motor, against accidents when the

 

 

 

 

 

 

motor unexpectedly restarts.

 

 

 

 

Prohibited

The inverter is tuned automatically (auto-tuning ￿￿￿￿=￿, ￿) when the inverter is started

 

6.22

 

 

 

 

for the first time after setup.

 

 

 

 

 

 

During auto-tuning, which takes several seconds, the motor is energized, although it is

 

 

 

 

 

 

standing still. Noise may be produced by the motor during auto-tuning, which, however,

 

 

 

 

 

 

does not indicate that something is wrong with the inverter or the motor.

 

 

 

 

 

• Do not set the stall prevention level (￿￿￿￿) extremely low.

 

6.33.1

 

 

 

 

If the stall prevention level parameter (￿￿￿￿) is set at or below the no-load current of the

 

 

 

 

 

 

motor, the stall preventive function will always be active and increase the frequency when it

 

 

 

 

 

 

judges that regenerative braking is taking place.

 

 

 

 

 

 

Do not set the stall prevention level parameter (￿￿￿￿) below 30% under normal use

 

 

 

 

 

 

conditions.

 

 

 

 

 

• Do not turn on the power before attaching the front cover.

 

3.

 

 

 

 

When storing inside the cabinet and using with the front cover removed, always close the

 

10.

 

 

 

 

cabinet doors first and then turn power on. If the power is turned on with the front cover or

 

 

 

 

 

 

the cabinet doors open, it may result in electric shock.

 

 

 

 

 

• Make sure that operation signals are off before resetting the inverter after malfunction.

 

3.

 

 

Mandatory

 

If the inverter is reset before turning off the operating signal, the motor may restart

 

 

 

 

 

 

suddenly causing injury.

 

 

 

 

 

• Provide cranes and hoists with sufficient circuit protection such as mechanical braking.

 

6.22

 

 

 

 

Without sufficient circuit protection, the resulting insufficient motor torque during tuning

 

 

 

 

 

 

could create a risk of machine stalling/falling.

 

 

 

 

 

 

 

 

 

 

 

 

Caution

 

Reference

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Observe all permissible operating ranges of motors and mechanical equipment. (Refer to

 

3.

 

 

 

 

the motor's instruction manual)

 

 

 

 

 

 

Not observing these ranges may result in injury.

 

 

 

 

Mandatory

 

 

 

 

 

 

When sequence for restart after a momentary failure is selected

 

 

 

 

 

Caution

Reference

 

 

 

 

 

 

 

Stand clear of motors and mechanical equipment.

5.18.1

 

 

 

 

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.

 

 

 

Attach cautions about sudden restart after a momentary power failure on inverters, motors

Mandatory and equipment for prevention of accidents in advance.

When retry function is selected

 

Caution

Reference

 

 

 

 

• Stand clear of motors and equipment.

6.14.1

 

If the motor and equipment stop when the alarm is given, selection of the retry function will

 

 

 

restart them suddenly after the specified time has elapsed and alarm condition has

 

Mandatory

disappeared. This could result in unexpected injury.

 

• To prevent accidents, stick caution notices that the inverter has a retry function to the

 

 

 

 

inverter, the motor and the machine.

 

5

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Toshiba VF-AS1 instruction manual When retry function is selected, Operations