LSIS H100 - Page 30

2. Troubleshooting
29
Problem
Solution
Acc/Dec time is too short
compared to the load inertia
(GD2).
Increase Acc/Dec time.
Output lead is short circuit.
Check the output wiring.
There is a problem in the wiring
between the inverter and the
motor.
Check the output wiring as well as the recommended specifications of
the wiring length, thickness, etc. Replace it if necessary.
There is a fault with the output
module (IGBT).
Refer to 3.1.4 Check Input/Output Module to identify the fault cause of
the output module (IGBT). DO NOT operate the inverter. Contact the
retailer or the LSIS Customer Service Center.
Keypad Display
Type
Description
NTC Open
Temperature
sensor fault
trip
Latch
Occurs when an error is detected in the temperature sensor of
the Insulated Gate Bipolar Transistor (IGBT).
Problem
Solution
The ambient temperature is too
low
Keep the ambient temperature above -10 ℃
There is a fault with the internal
temperature sensor.
Contact the retailer or the LSIS customer service center.
Keypad Display
Type
Description
FAN Trip
Fan fault trip
Latch
Occurs when there is a problem with the cooling fan.
Operation will resume after setting PRT-79 to 0
Problem
Solution
There are external substances
blocking the air vent.
Remove the external substances.
The cooling fan needs to be
replaced.
Change the cooling fan. (Refer to 3.1.5 Replace cooling fan)