4 Troubleshooting
- 29 -
Display
Fault Name
Possible Causes
Solutions
Err15 External
equipment fault
1. External fault signal is input via DI.
2. External fault signal is input via VDI.
Reset the fault.
Err16 Communication
fault
1. The host computer is abnormal.
2. The communication cable is faulty.
3. The extension card type set in F0-28 is
incorrect.
4. The communication parameters in
group FD are set improperly.
1: Check cabling of the host
computer.
2: Check the communication
cabling.
3: Set F0-28 correctly.
3: Set the communication
parameters properly.
Err18 Current
detection fault
The drive board is faulty.
Replace the drive board.
Err19 Motor tuning
fault
1. Motor parameters are wrong.
2. Motor tuning overtime.
1. Check motor parameters
F1-00 to F1-05.
2. Check the wiring between
drive and motor.
Err21 EEPROM read-
write fault
The EEPROM chip is damaged.
Replace the main control
board.
Err23 Short circuit to
ground
The motor is short-circuited to ground.
Replace the cables or motor.
Err26
Accumulative
running time
reached
The accumulative running time reaches
the setting of F8-17.
Clear the record by
performing parameter
initialization (set FP-01 to
2).
Err27
User-defined
fault 1
1. The user-defined fault 1 signal is input
via DI.
2. User-defined fault 1 signal is input via
VDI.
Reset the fault.
Err28
User-defined
fault 2
1. The user-defined fault 2 signal is input
via DI
2. The user-defined fault 2 signal is input
via VDI.
Reset the fault.
Err29
Accumulative
power-on time
reached
The accumulative power-on time reaches
the setting of F8-16.
Clear the record by
performing parameter
initialization (set FP-01 to
2).
Err30
Off load fault
Offload when it's running.
Check the connection
between motor and load.
Err31
PID feedback
lost during
running
The PID feedback is lower than FA-26.
Check the PID feedback
signal or set FA-26 to a
proper value.
Err33
Communication
receiving
timeout inside
drive board
1. Wirings become loose inside the AC
drive
2. The drive board is abnormal.
3. The control board is abnormal.
1. Connect all wirings
securely.
2 and 3. Seek for
maintenance.
