!E6581301!
5
I
■
■■
■ Operations
Warning
Reference
Prohibited
• Do not to uch inverter terminals when electrical power is app lied to the inverter even if the
motor is stopped.
Touching the inverter terminals while power is connected to it may result in electric sho ck.
• Do not to uch switches when thands are wet and do not try to clean the inverter with a
damp cloth.
Such practices may result in electric shock.
• Do not go near the motor in alarm-stop status when the retr y function is selected.
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.
• The inve rter is tuned automatically (auto-tuning H=, ) when the inverter is started
for the first time after setup.
During auto-tuning, which takes several seconds, the motor is energized, al though 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 (H) extremely lo w.
If the stall prevention level parameter (H) is set at or below the no-load c urrent 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 (H) below 30% under normal use
conditions.
3.
3.
3.
6.22
6.33.1
Mandatory
• Do not turn on the power before attaching the front cover.
When storing inside the cabinet and using with the front cover removed, al ways close the
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 tha t operation signals are off before resetting the i nverter after malfunction.
If the inverter is reset before turning off the operating signal, the motor may restart
suddenly causing injury.
• Provide cra nes and hoists with sufficient circuit protection such as mechanical braking.
Without sufficient circuit protection, the resulting insufficient motor torque duri ng tuning
could create a risk of machine stalling/falling.
3.
10.
3.
6.22
Caution
Reference
Mandatory
• Observe all per missible operating ranges of motors and mechanica l equipment. (Refer to
the motor's instruction manual)
Not observing these ranges may result in injury.
3.
When sequence for restart after a momentary failure is select ed Caution
Reference
Mandatory
• Stand clear of motors and mechanical equipment.
If the motor stops due to a momentary power failure, the equipment will start sud denly
when power is restored.
This could result in unexpected injury.
• Attach cauti ons about sudden restart after a momentary power fail ure on inverters, motors
and equipment for prevention of accidents in advance.
5.18.1
When retry function is selected Caution
Reference
Mandatory
• Stand clear of motors a nd equipment.
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
disappeared. This could result in unexpected injury.
• To prevent accidents, stick cauti on notices that the inverter has a retry functi on to the
inverter, the motor and the machine.
6.14.1