ACD320user manual
Fault Diagnosis and countermeasures
- 113-
The wiring of Serial port communication
error
Check if communication wiring
is correct
Communication function code parameter
F4 set improperly.
Modify the set of F4.03
、
F4.04.
Upper device doesn’t work
Check if upper device work and
wiring is correct
U-17
Reserved
Reserved
Reserved
U-18
current detecting
circuit failure
Connecting wire or insert on control
board loose
Check and connect the wire
again
Assistant power supply damaged
Look for service from
manufacturer or agent
Hall device damaged.
Look for service from
manufacturer or agent
Amplifying circuit is abnormal.
Look for service from
manufacturer or agent
U-19
Auto tuning of motor
parameters failure
Motor parameters is not set according to
rated data of motor
Set the parameter of motor
correctly
Whether it is proper to manually raise
torque or Accel/Decel time set
Adjust the manual raising of
torque or extend Accel/Decel
time.
The motor parameter
identification has been performed
Ckeck the lead wire from
inverter to the motor.
U-20
Reserved
U-21
EEPROM abnormal
Mistake take place when read or write
control parameter
Reset by pressing Look for
service from manufacturer or
agent
U-22
Hardware of inverter
failure
Overvoltage failure
Deal witn the failure according
to the overvoltage fault .
Overcurrent failure.
Deal witn the failure according
to the overcurrent fault .
Overvoltage or overcurrent hardware
circuit failure.
Look for service from
manufacturer or agent
