Commissioning and Trial Run
‑132‑
Fault Name Panel
Display
Possible Cause Solution Fault Type
Overcurrent at
constant speed
E04.04
1. A grounding fault or
short circuit exists in
the output circuit of
the AC drive.
2. The control mode is
SVC, and motor auto‑
tuning is not
performed.
3. The overcurrent stall
prevention
parameters are set
improperly.
4. The AC drive power
class is too low.
5. The AC drive suffers
external interference.
1. Check the motor and make sure that the
motor circuit is not shorted or open.
2. Set the motor parameters according to
the motor nameplate and perform motor
auto‑tuning.
3. Ensure that overcurrent stall prevention
is enabled (F3‑19 = 1). The overcurret
stall prevention current (F3‑18) is too
high. Adjust it between 120% and 150%.
The overcurret stall prevention gain (F3‑
20) is too low. Adjust it between 20 and
40.
4. During stable running, if the running
current exceeds the rated motor current
or rated output current of the AC drive ,
replace the AC drive with one of higher
power class.
5. Check whether the fault current reaches
the overcurret stall prevention current
(F3‑18) by viewing the fault log. If not, the
fault is possibly caused by external
interference. You need to find out the
external interference source and rectify
the fault.If no external interference
source is found, the driver board or Hall
device may be faulty. Contact the
manufacturers to replace them.
Axis fault
E04.05 Axis fault
E04.06 Axis fault
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