140
Appendix 2 Alarm Code List
Alarm Code
Code
Screen Display
Cause
Troubleshooting
PID
PID
abnormal
1.The capacitr of inverter and
motor is not enough.
2.Setting PID
target value and
feed-back value unreasonable
3.peripheral equipment failure
1. Exchange a larger capacity
inverter and motor.
2.Check the value which setting
of PID feel-back signal
Gain
，
setting the value again according
to PID feed-back signal Gain.
3. Check whether the external
feedback device (such as sensor,
regulation resistance) and circuit
is normal or abnormal.
CPU
CPU error
External electromagnetic
disturbance is too strong
Improve external disturbance
OLS
Stall prevention
protection
The load of the motor is too
heavy.
1.
Reduce the load of the motor.
Increase the value of P.22.
SCP
Over-current
The output current is two times
larger than the rated current of
the inverter.
Check Terminals U, V and W for
short circuit. (such as the motor
wiring)
NTC
The IGBT
module is
overheating
The
temperature
of
IGBT
module is too high
1.
Reduce
the
environment
temperature and improve the
air condition
2.
Check whether the fan of the
inverter is damaged.
CPR
CPU abnormal
CPU software abnormal
1.
Check the wiring.
2.
Check the parameter setting.
3.
Improve external disturbance.
BE
Brake-Resistor
Alarm(Relay
Alarm)
Brake-Resistor
Alarm(Relay
Alarm)
Send back for Repair.
OL2
Over torque
abnormal
1.
Too heavy load of motor.
2.
The setting value of P.155
and P.156 is unreasonable.
1.
Alleviate the load of motor.
2.
Adjustment the setting value
of P.155 and P.156 properly
Note: 1. The types witch below 40HP, the BE alarm is brake-resistor alarm, The types witch below 40HP, the BE
alarm is relay alarm,
2. When the above alarms occur, the inverter will stop. Please deal with these alarms according to the
methods mentioned above.
3. The abnormal number of alarm code can refer to page 119.
PDF created with pdfFactory trial version
