MD380 User Manual Maintenance and Troubleshooting
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Fault Name Display Possible Causes Solutions
Communication
fault
Err16
1: The host computer is in
abnormal state.
2: The communication cable is
faulty.
3: F0-28 is set improperly.
4: The communication parameters
in group FD are set improperly.
1: Check the cabling of host
computer.
2: Check the communication
cabling.
3: Set F0-28 correctly.
4: Set the communication
parameters properly.
Contactor fault Err17
1: The drive board and power
supply are faulty.
2: The contactor is faulty.
1: Replace the faulty drive
board or power supply board.
2: Replace the faulty
contactor.
Current detection
fault
Err18
1: The HALL device is faulty.
2: The drive board is faulty.
1: Replace the faulty HALL
device.
2: Replace the faulty drive
board.
Motor auto-tuning
fault
Err19
1: The motor parameters are not
set according to the nameplate.
2: The motor auto-tuning times
out.
1: Set the motor parameters
according to the nameplate
properly.
2: Check the cable
connecting the AC drive and
the motor.
Encoder fault Err20
1: The encoder type is incorrect.
2: The cable connection of the
encoder is incorrect.
3: The encoder is damaged.
4: The PG card is faulty.
1: Set the encoder type
correctly based on the actual
situation.
2: Eliminate external faults.
3: Replace the damaged
encoder.
4: Replace the faulty PG
card.
((3520UHDG
write fault
Err21 7KH((3520FKLSLVGDPDJHG
Replace the main control
board.
AC drive
hardware fault
Err22
2YHUYROWDJHH[LVWV
2YHUFXUUHQWH[LVWV
1: Handle based on
overvoltage.
2: Handle based on
overcurrent.
Short circuit to
ground
Err23
The motor is short circuited to the
ground.
Replace the cable or motor.
Accumulative
running time
reached
Err26
The accumulative running time
reaches the setting value.
Clear the record through
the parameter initialization
function.
8VHUGH¿QHG
fault 1
Err27
7KHXVHUGH¿QHGIDXOWVLJQDO
is input via DI.
8VHUGH¿QHGIDXOWVLJQDOLV
LQSXWYLDYLUWXDO,2
Reset the operation.
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