HV580L Series Frequency Inverter
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7.4 Common Faults and Solutions
You may come across the following faults during the use of the AC drive. Refer to the following table for simple
fault analysis.
Table 7-2 Troubleshooting to common faults of the AC drive
SN
Fault
Possible Causes
Solutions
1
There is no display at
power-on.
1: There is no power supply to the
AC drive or the power input to the
AC drive is too low.
2: The power supply of the switch
on the drive board of the AC drive
is faulty.
3: The rectifier bridge is damaged.
4: The control board or the
operation panel is faulty.
5: The cable connecting the control
board and the drive board and the
operation panel breaks.
1: Check the power supply.
2: Check the bus voltage.
3: Re-connect the 8-core and
28-core cables.
4: Contact the agent or HNC
Electric for technical support.
SN
Fault
Possible Causes
Solutions
2
―HC‖ is displayed at
power-on.
1: The cable between the drive
board and the control board is in
poor contact.
2: Related components on the
control board are damaged.
3: The motor or the motor cable is
short circuited to the ground.
4: The HALL device is faulty.
5: The power input to the AC drive
is too low.
1: Re-connect the 8-core and
28-core cables.
2: Contact the agent or HNC
Electric for technical support.