iv
Safety instructions
l
Do not start or stop the inverter by the magnetic contactor installed at the
input of inverter.
l
Noise filter should be used for the minimization of troubles by electro-
magnetic noise. Electronic equipments close to the inverter should be
protected against the damage caused by troubles.
l
Be sure to install the AC reactor at the input of inverter in case of input voltage
unbalance. Otherwise, generator or phase-leading capacitors may be destroyed
by the harmonic current from inverter.
l
If 400V class motor is used with the inverter, insulation-enforced motor should
be used or countermeasures against the suppression of micro-surge voltage
generated by the inverter should be carried out. Otherwise, micro-surge
voltage is generated across input terminal for the motor and this voltage
lowers allowable insulation break-down voltage and then, may cause the
destruction of the motor.
l
Be sure to set the parameters once more, in case of initialization of parameters,
all values of parameters is set to values of factory setting.
l
High speed operation can be set easily, therefore be sure to check the
performance of motor or machine before changing parameter value.
l
DC braking function cannot produce a zero-servo torque. If required, additional
equipment should be installed.
l
When inverter trip or emergency stop (BX) occurs without keypad connected,
LED on the control board will blink by the interval of 0.5 sec. But LED will blink
by 1 sec when keypad is connected.
5) Countermeasure against malfunction troubles
l
If inverter is damaged and then gets into uncontrollable situation, the machine
may lead to the dangerous situation, therefore to avoid this situation, be sure
to install the additional equipments such as brake.
6) Maintenance, inspection and parts replacement
l
Do not perform the megger (insulation resistance check) test on the control
board.
l
Please refer to Chapter 7 (intervals for parts replacement).
7) Disposal
l
Handle the inverter as an industrial waste when disposing of it.
8)
General instructions
Many of the diagrams and drawings in this instruction manual show the inverter without
a circuit breaker, a cover or partially open. Never run the inverter like this. Always place
the cover with circuit breakers and follow this instruction manual when operating the
inverter.