Inovance MD500-PLUS Series - Page 715

Fault Codes
‑714‑
Fault Name Display Possible Cause Action
Motor auto‑tuning
error
E22.00 Auto‑tuned stator resistance out
of range
Correctly set F1‑02 (rated motor voltage) and F1‑
03 (rated motor current) in group F1 according to
the motor nameplate.
E22.01 Auto‑tuned rotor resistance of
the asynchronous motor out of
range
Ensure that auto‑tuning is performed after the
motor stops.
E22.02 The no‑load current and mutual
inductance of the asynchronous
motor obtained through auto‑
tuning exceed the allowed range.
If this alarm is reported, the AC
drive calculates the mutual
inductance and no‑load current
values based on known motor
parameters. The calculated
values may not be the optimal
values.
Set motor parameters in group F1 according to
the motor nameplate.
Ensure that the motor has no load before auto‑
tuning.
E22.03 Auto‑tuned back EMF of the
synchronous motor out of range.
Set F1‑02 (rated motor voltage) according to the
motor nameplate.
Ensure that the motor has no load before auto‑
tuning.
E22.04 Inertia auto‑tuning fault Set F1‑03 (rated motor current) according to the
motor nameplate.
Short circuit to
ground
E23.00 Motor shorted to the ground Check and replace the motor cables and motor if
necessary.
Motor inter‑phase
short circuit
E24.00 Motor inter‑phase short circuit Check whether a two‑phase short circuit occurs
on the output UVW.
Rectifier fault E25.00 Rectifier fault Rectify corresponding faults, such as input phase
loss and overtemperature.
1: Operation enabled
2: Incoming circuit breaker feedback
3: Auxiliary circuit breaker feedback
4: Leakage protection switch feedback. If there is
no feedback signal, an alarm is reported.
6: Inverter unit operation inhibited
7: Inverter unit coast‑to‑stop
8: User‑defined inverter unit stop. If the terminal
is active, an alarm is reported.
Accumulative
running time reach
E26.00 The accumulative running time
has reached the reference value.
Clear the record through parameter initialization.
User‑defined fault 1 E27.00 The user‑defined fault 1 signal is
input via the DI.
Perform a reset.
The user‑defined fault 1 signal is
input through the virtual I/O
function.
Perform a reset.