Commissioning and Trial Run
‑140‑
Fault Name Panel
Display
Possible Cause Solution Fault Type
User‑defined fault 1 E27.00 The signal of user‑
defined fault 1 is input
through the multi‑
functional DI terminal or
virtual I/O.
Reset the fault. Axis fault
User‑defined fault 2 E28.00 The signal of user‑
defined fault 2 is input
through the multi‑
functional DI terminal or
virtual I/O.
Reset the fault. Axis fault
Accumulative power‑
on time reached
E29.00 The accumulative
power‑on time reaches
the set value.
Clear the record through parameter
initialization.
Axis fault
Load loss E30.00 The running current of
the AC drive is lower
than F9‑68 (Load loss
detection level).
Check whether the load is disconnected or
whether F9‑68 (Load loss detection level)
and F9‑69 (Load loss detection time) are set
based on the actual working condition.
Axis fault
PID feedback loss
during running
E31.00 The PID feedback is
lower than FA‑26
(Detection level of PID
feedback loss).
Check the PID feedback signal, or set FA‑26
(Detection level of PID feedback loss) to a
proper value.
Axis fault
Local parameter copy
failure
E32.00 The local parameter
copy function is
abnormal.
Check whether the copied drive unit station
numbers exceed the quantity of drive units
installed.
Power
supply unit
fault
Excessive speed
deviation
E42.00 Motor auto‑tuning is not
performed.
Perform motor auto‑tuning. Axis fault
F9‑73 (Detection level of
excessive speed
deviation) and F9‑74
(Detection time of
excessive speed
deviation) are set
incorrectly.
Set F9‑73 (Detection level of excessive speed
deviation) and F9‑74 (Detection time of
excessive speed deviation) correctly based
on actual conditions.
Axis fault
Motor
overtemperature
E45.00 The connection of the
temperature sensor
becomes loose.
Check the temperature sensor connection. If
it is loose, re‑connect the temperature
sensor.
Axis fault
The motor temperature
is too high.
Increase the carrier frequency or take other
heat dissipation measures to cool the motor.
Axis fault
The motor
overtemperature
protection thresholds
(F9‑57, F9‑59, F9‑61) are
too small.
Increase the motor overtemperature
protection thresholds (90°C to 100°C for the
common motor).
Axis fault
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