230
Fault code Fault type Possible fault cause Solutions
Er.dEv
Too large
speed
deviation
(DEV) fault
ASR parameters are improper. Modify the setting of the group P05 function code
DEV deviation detection value setting is
too low.
Modify the DEV detection value setting
Heavy load fluctuation Eliminate the load vibration
Er.Fbo
PID feedback
exceeding limit
PID feedback value out of limited range
Check whether the feedback value input voltage is
normal, if normal, seek for service support
Er.oHL
Motor
over-temperatu
re
The ambient temperature is too high. Lower the ambient temperature
The motor duct is blocked. Clean the motor duct
The motor fan is damaged. Replace the motor fan
The motor operates at low frequency
and large load for a long time.
Add a large fan for the motor to dissipate heat
Er.AIF
Abnormal AI
analog input
Abnormal control circuit Seek for service support
The input analog is out of the range and
the absolute value is greater than 11V
Check the analog input
Er.THI
Inverter
module
temperature
sampling
disconnection
Abnormal temperature sampling circuit Seek for service support
The inverter module temperature
sampling wire is poorly connected.
Check the inverter module temperature
sampling wire connection
Er.THr
Rectifier
module
temperature
sampling
disconnection
Abnormal temperature sampling circuit Seek for service support
The temperature sampling wire is poorly
connected.
Check the temperature sampling wire connection
Er.10v
Control board
±10V power
short circuit
±10V grounding Confirm whether the ±10V wiring is correct
The interface board circuit is damaged.
Replace the interface board, seek for service
support
Er.rEF
Abnormal
internal
over-current
reference
The control board circuit is damaged. Seek for service support
Er.PIL
Wrong PID
limit value
setting
The PID lower limit set value exceeds
PID upper limit set value
Adjust the PID upper / lower limit set value
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