
RTAG-SVX001H-EN
128
Fault Code
Fault Name
Cause
Possible Solution
E01.01
Hardware fault
The AC drive is abnormal in current
sampling.
Check whether the main circuit is powered on.
Check whether the hall sensor or current sampling circuit is
damaged. If yes, contact us or the agent.
E01.02
The contactor is faulty.
Check the contactor.
E01.03
The braking resistor is short-circuited.
Check that the braking resistor is normal and its model
matches the AC drive model.
E02.00
Overcurrent during
acceleration
A ground fault or short circuit exists in
the output circuit of the AC drive.
Check whether short circuit occurs on the motor, motor
cable, or contactor.
The control mode is SVC but motor au-
to-tuning is not performed.
Set motor parameters according to the motor nameplate
and perform motor auto-tuning.
Acceleration time is too short.
Increase acceleration time.
The overcurrent stall prevention param-
eters are set improperly.
Ensure that current limit is enabled (F3- 19 = 1).
The setting of F3-18 (V/F current limit level) is too large.
Adjust it between 110% and 140%.
The setting of F3-20 (V/F current limit gain) is too small.
Adjust it between 5 and 20.
Customized torque boost or V/F curve is
not appropriate.
Adjust the customized torque boost or V/F curve.
The spinning motor is started.
stops.
The AC drive suffers external interfer-
ence.
View historical fault records. If the current value is far from
the overcurrent level, locate the interference source. If ex-
ternal interference does not exist, the driver board or hall
device may be faulty.
E03.00
Overcurrent during
deceleration
A ground fault or short circuit exists in
the output circuit of the AC drive.
Check whether short circuit occurs on the motor, motor
cable, or contactor.
The control mode is SVC but motor au-
to-tuning is not performed.
Set motor parameters according to the motor nameplate
and perform motor auto-tuning.
Deceleration time is too short.
Increase deceleration time.
The overcurrent stall prevention param-
eters are set improperly.
Ensure that current limit is enabled (F3-19 = 1). The set-
ting of F3-18 (V/F current limit level) is too large. Adjust
it between 110% and 140%. The setting of F3-20 (V/F
current limit gain) is too small. Adjust it between 5 and 20.
The braking unit and braking resistor are
not installed.
Install the braking unit and braking resistor.
The AC drive suffers external interfer-
ence.
View historical fault records. If the current value is far from
the overcurrent level, locate the interference source. If ex-
ternal interference does not exist, the driver board or hall
device may be faulty.
E04.00
Overcurrent at
constant speed
A ground fault or short circuit exists in
the output circuit of the AC drive.
Check whether short circuit occurs on the motor, motor
cable, or contactor.
The control mode is SVC but motor au-
to-tuning is not performed.
Set motor parameters according to the motor nameplate
and perform motor auto-tuning.
The overcurrent stall prevention param-
eters are set improperly.
Ensure that current limit is enabled (F3-19 = 1). The set-
ting of F3-18 (V/F current limit level) is too large. Adjust
it between 110% and 140%. The setting of F3-20 (V/F
current limit gain) is too small. Adjust it between 5 and 20.
The AC drive power class is small.
If output current exceeds rated motor current or rated out-
put current of the AC drive during stable running, replace a
drive of larger power class.
The AC drive suffers external interfer-
ence.
View historical fault records. If the current value is far from
the overcurrent level, locate the interference source. If ex-
ternal interference does not exist, the driver board or hall
device may be faulty.
E05.00
Overvoltage during
acceleration
Input voltage is too high.
Adjust input voltage to normal range.
An external force drives the motor
during acceleration.
Remove the external force or install a braking resistor. The
setting of F3-26 (Frequency rise threshold during voltage
limit) is too small. Adjust it between 5 Hz and 15 Hz.
The overvoltage stall prevention param-
eters are set improperly.
Ensure that the voltage limit function is enabled (F3-23 = 1).
The setting of F3-22 (V/F voltage limit) is too large. Adjust
it between 700 V and 770 V. The setting of F3-24 (Frequency
gain for V/F voltage limit) is too small. Adjust it between 30
and 50.
The braking unit and braking resistor are
not installed.
Install the braking unit and braking resistor.
Acceleration time is too short.
Increase acceleration time.