HV580L Series Frequency Inverter
186
7
The DI terminals are
disabled.
1: The parameters are set
incorrectly.
2: The external signal is incorrect.
3: The jumper bar across OP and
+24 V becomes loose.
4: The control board is faulty.
1: Check and reset the parameters
in group P4.
2: Re-connect the external signal
cables.
3: Re-confirm the jumper bar
across OP and +24 V.
4: Contact the agent or HNC
Electric for technical support.
8
The motor speed
is always low in
CLVC mode.
1: The encoder is faulty.
2: The encoder cable is connected
incorrectly or in poor contact.
3: The PG card is faulty.
4: The drive board is faulty.
1: Replace the encoder and ensure
the cabling is proper.
2: Replace the PG card.
3: Contact the agent or HNC
Electric for technical support.
9
The AC drive reports
overcurrent and
overvoltage
frequently.
1: The motor parameters are set
improperly.
2: The acceleration/deceleration
time is improper.
3: The load fluctuates.
1: Re-set motor parameters or
re-perform the motor auto-tuning.
2: Set proper
acceleration/deceleration time.
3: Contact the agent or HNC
Electric for technical support.
SN
Fault
Possible Causes
Solutions