Chapter 7 Faults and solutions
136
parameter PD group setting is
incorrect.
communication parameters
Contactor
failure
Err17
1. The driver board and power
supply are abnormal.
2, the contactor is not normal
3, three-phase input power
shortage
1. Replace the driver board or
power board
2, replace the contactor
3, check the three-phase input
power
Current
detection
fault
Err18
1, check the Hall device is
abnormal
2, the driver board is
abnormal
1, replace the Hall device
2, replace the driver board
Motor
tuning
failure
Err19
1. The motor parameters are
not set according to the
nameplate.
2. The parameter identification
process times out.
1. Set the motor parameters
correctly according to the
nameplate
2. Check the inverter to the
motor lead
Code disk
failure
Err20
1, the encoder model does not
match
2, the encoder connection
error
3, the encoder or PG card is
damaged
1, correctly set the encoder
type
2, eliminate line faults
3. Replace the encoder or PG
card
EEPROM
read and
write failure
Err21
1, EEPROM chip damage
1. Replace the main control
board
Inverter
hardware
failure
Err22
Overvoltage or overcurrent
According to overvoltage or
overcurrent fault handling
Short circuit
to ground
Err23
Motor short to ground
Replace cable or motor
Accumulate
d running
time to
Err26
Cumulative running time
reaches the set value
Parameter initialization clear
record information