LSIS S100 Series Troubleshooting Manual

2. Troubleshooting
21
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
Low Voltage
Trip
Level
Occurs when the DC circuit voltage is lower than the
specified 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.
There are blackout accidents.
Use speed search function (Cn.60).
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.
Keypad Display
Type
Description
Overcurrent
Trip2
Latch
Occurs when the DC circuit in the inverter detects an
excessive short circuit current.
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.
LVT
OC2

LSIS S100 Series Specifications

General

Brand	LSIS
Model	S100 Series
Category	Controller
Language	English