Shihlin electric SC3 Series User Manual

Appendix 2 Alarm code list
Appendix 199
Code
Keypad screen display
Cause
Troubleshooting
THT
IGBT module
Overheat
1. IGBT module thermal relay
actuate. (overload warning)
2. 01-03 (P.3) setting does not
match the rated frequency of the
motor.
3. Insufficient input power
voltage causes inverter output
capacity reduced.
4.The three phase input
connection of the motor is
incorrect.
1.Check whether the inverter specifications
match the motor specifications
2.Check whether the load of the system is
too heavy, and whether the output current
displayed by the inverter exceeds the rated
current
3.Check whether the wiring of the motor is
correct (usually 220V motor is delta (△)
connection, 380V motor is star (Y)
connection, please check motor nameplate
for connection details)
4.Check whether the motor wiring is
damaged
5.Check whether the setting value of P.9
(06-00) matches the rated current of the
motor
6.Check whether the parameter setting of
P.3 (01-03) is the same with the rated
frequency of the motor
THN
Motor
Overheated
Thermal relay actuate.
1.Check whether the inverter specifications
match the motor specifications
2.Check whether the load of the system is
too heavy, and whether the output current
displayed by the inverter exceeds the rated
current
3.Check whether the wiring of the motor is
correct (usually 220V motor is delta (△)
connection, 380V motor is star (Y)
connection, please check motor nameplate
for connection details)
4.Check whether the motor wiring is
damaged
5.Check whether the setting value of P.9
(06-00) matches the rated current of the
motor
6.Check whether the parameter setting of
P.3 (01-03) is the same with the rated
frequency of the motor
OHT
External
Overheat
External thermal relay actuate.
1.Check if the thermal relay used matches
the motor
2.Reduce the load
3. Check if the external IO signal is not
connected or dropped
OPT
RS485
connector error
1.Communication error ,
exceeding the retry limit.
2. External noise interference
3. The logic of the
communication control program
is unreasonable
4.Disconnect time exceeding the
limit.
1.Check whether the parameter (P.32, P.33,
P.36, P.154) setting is the same with upper
controller communication setting
2.Check whether the RS485 DA+ and DB-
terminal wiring is correctly connected to the
upper controller
3.Check whether the communication
protocol of the upper controller is the same
as the one declared in inverter
4.The communication line is interfered by
external noise (it is recommended to use
twisted-pair shielded wire and connect to the
signal ground correctly)
5.The inverter internal communication port is
damaged and needs to be returned to the
factory for inspection

Shihlin electric SC3 Series Specifications

General

Brand	Shihlin electric
Model	SC3 Series
Category	Inverter
Language	English