Compact & Powerful Inverter iG5A
29
Fault Remedy
Remedy
Keypad display
Cause
→
Increase the Accel/Decel time.
→
Replace the inverter with appropriate capacity.
→
Resume operation after stopping the motor or use
H22 (Speed search).
→
Check output wiring.
→
Check the mechanical brake.
→
Check the wiring of the output terminal.
→
Replace the motor.
→
Upgrade the capacity of motor and inverter or
reduce the load weight.
→
Reduce torque boost scale.
→
Check for alien substances clogged in the heat sink.
→
Replace the old cooling fan with a new one.
→
Keep ambient temperature under 50
�
C.
→
Make connection of magnetic switch
at output of the inverter securely.
→
Check output wiring.
→
Check the ventilating slot and remove
the clogged substances.
→
Replace the cooling fan.
→
Increase the Decel time.
→
Use Dynamic Brake Unit.
→
Check whether line voltage exceeds its rating.
→
Check whether line voltage is below its rating.
→
Check the incoming AC line.
Adjust the line capacity corresponding to the load.
→
Change a magnetic switch.
→
Reduce load weight and operating duty.
→
Change inverter with higher capacity.
→
Adjust ETH level to an appropriate level.
→
Select correct inverter capacity.
→
Install a cooling fan with a separate power supply.
→
Eliminate the cause of fault at circuit connected to
external fault terminal or cause of external fault input.
→
Check the wiring of V1 and
I
and frequency
reference level.
→
Check for connection of communication line and
connector.
→
Contact your LSIS sales distributor.
Accel/Decel time is too short compared to the GD
2
of
the load.
Load is greater than the inverter rating.
Inverter output is issued when the motor is free running.
Output short circuit or ground fault has occurred.
Mechanical brake of the motor is operating too fast.
Ground fault has occurred at the output wiring of the inverter.
The insulation of the motor is damaged due to heat.
Load is greater than the inverter rating.
Torque boost scale is set too large.
Cooling system has faults.
An old cooling fan is not replaced with a new one.
Ambient temperature is too high.
Faulty contact of magnetic switch at output.
Faulty output wiring.
An alien substance is clogged in a ventilating slot.
Inverter has been in use without changing a cooling fan.
Decel time is too short compared to the GD
2
of the load.
Regenerative load is at the inverter output.
Line voltage is too high.
Line voltage is low.
Load larger than line capacity is connected to line
(ex: welding machine, motor with high starting current
connected to the commercial line).
Faulty magnetic switch at the input side of the inverter.
Motor has overheated.
Load is greater than inverter rating.
ETH level is set too low.
Inverter capacity is incorrectly selected.
Inverter has been operated at low speed for too long.
The terminal set to
“
18 (External fault- A)
”
or
“
19 (External fault-B)
”
in
I
20-
I
24 in I/O group is ON.
No frequency command is applied to V1 and
I
.
Communication error between inverter
keypad and remote keypad.
Caution:
When an overcurrent fault occurs, operation must be started after the cause is removed
to avoid damage to IGBT inside the inverter.
Overcurrent
Ground fault current
Inverter overload
Overload trip
Heat sink overheat
Output Phase loss
Cooling fan fault
Over voltage
Low voltage
Electronic thermal
External fault A
contact input
External fault B
contact input
Operating method
when the frequency
command is lost
Remote keypad
communication error
- EEP: Parameter save error
- HWT: Hardware fault
- Err: Communication Error
- COM: Keypad error
Summary of Contents for STARVERT iG5A
Page 30: ...iG5A 30 Memo...
