LSIS H100 Troubleshooting Manual

2. Troubleshooting
28
Problem
Solution
There is a problem with the
magnetic contactor in the output.
Check the magnetic contactor on the outside.
The output wiring is faulty.
Check the output wiring.
Keypad Display
Type
Description
In Phase Open
Input open-
phase fault
trip
Latch
Occurs when one of the three input phases is phase open.
Operation will resume after setting PRT05 bit 2 to 1.
Problem
Solution
There is a problem with the
magnetic contactor in the input.
Check the magnetic contactor on the input side.
The input wiring is faulty.
Check the input wiring.
The DC condenser needs to be
replaced.
Replace the DC condenser.
Contact the retailer or the LSIS Customer Service Center.
Keypad Display
Type
Description
Inverter OLT
Inverter
Overload
Trip
Latch
Occurs when the overload time equivalent to 60% of the inverter
overheat protection (inverter IOLT) level, is accumulated. Set the
digital output terminals or relay (OUT-31–35 or OUT-36) to ‘6
(IOL)’ to receive the inverter overload warning output signals.
Problem
Solution
The load is greater than the motor’s
rated capacity
Replace the motor and inverter that has a bigger capacity..
The torque boost level is too
high.
Reduce the torque boost level.
Keypad Display
Type
Description
Over Heat
Over Heat
Trip
Latch
Occurs when the temperature of the heat sink exceeds the
specific value.
Problem
Solution
There is a problem with the
cooling system.
Check whether there are any external substances (dust, etc.) in the air
inlet, outlet or vent.
The cooling fan has been
operating for a long time
Change the cooling fan. (Refer to 3.1.5 Replace cooling fan)
The ambient temperature is too
high.
Keep the ambient temperature below 50℃.
Keypad Display
Type
Description
Over Current2
ARM short
current fault
trip
Latch
Occurs when the DC circuit in the inverter detects an
excessive short circuit current.

LSIS H100 Specifications

General

Brand	LSIS
Model	H100
Category	Inverter
Language	English