ACD320user manual
Fault Diagnosis and countermeasures
- 124-
5
The motor does not
rotate when the
inverter runs.
Motor
damages
or it
is
blocked up.
Change the motor or clear up
mechanical failure.
The setting of parameter is
wrong (mainly refer to motor
parameter of group F1)
Check and reset parameter of group
F1.
6
MI terminal is
ineffective
The setting of parameter is
incorrect.
Check and reset relative parameter of
group F2 and F9.00.
The orientation of
dial switch
is incorrect.(NPN or PNP)
The dial switches to the other end
The control board fails.
Look
for
service
from
the
manufacturer.
7
Frequent alarm
U-14
（
Module is too
hot
）
The carrier frequency is too
high.
Lower carrier frequency
（
F0.11
）
.
Fan
damaged
or
air-path
blocked.
Replace the fan and clear air-path.
Parts
of
the
inverter
is
damaged.
Look
for
service
from
the
manufacturer.
8
Frequent alarm that
overvoltage or
overcurrent failure
The parameter of motor is not
properly setted.
Reset motor parameters of F1 and run
auto tuning of motor parameters.
Accel/Decel
time
is
not
suitable.
Set
appropriate
accelerating
decelerating time.
