LSIS H100 Troubleshooting Manual

2. Troubleshooting
26
motor is operating too fast.
Output wiring is short-circuited /
Ground fault occurred.
Remove the short circuit. Check the motor for ground fault.
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..
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
Over Voltage
Over
Voltage Trip
Latch
Occurs when voltage rate of the DC circuit is higher than the
specific value..
Problem
Solution
The input voltage is too high.
Check whether the input voltage is higher than the specified value.
The actual DC link voltage is
different from the value on the
display.
Need to inspect the Hardware.
Contact the retailer or the LSIS Customer Service Center.
Acc/Dec time is too short
compared to the load inertia
(GD2).
Increase Acc/Dec time.
There is a generative load at the
inverter output.
Use the braking unit.
Keypad Display
Type
Description
Low Voltage
Low
Voltage Trip
Level
Occurs when the DC circuit voltage is lower than the
specified value.
Problem
Solution
The input voltage is too low.
Check whether the input voltage is lower than the specified value.
The actual DC link voltage is
different from the value on the
display.
Need to inspect the Hardware.
Contact the retailer or the LSIS Customer Service Center.
There is a problem with the input
(R, S, T) wiring.
Rewire.
The magnetic contactor
connected the power source is
faulty..
Replace the magnetic contactor.
A load greater than the power
capacity is connected to the
power system. (welder, direct
motor connection, etc.)
Increase power capacity.

LSIS H100 Specifications

General

Brand	LSIS
Model	H100
Category	Inverter
Language	English