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