Chapter 7 Faults and solutions
140
7
The input
terminal is
invalid.
The parameter setting is
incorrect;
External signal error;
Control board failure;
Check and reset the P4 group
parameters;
Reconnect the external signal line;
Seek factory services;
8
When closed
loop vector
control, the
motor speed
cannot be
increased.
Encoder failure;
The encoder is connected to the
wrong line or has poor contact;
PG card or drive board failure;
Replace the code wheel and
reconfirm the wiring; replace the
PG card;
Seeking service;
9
The inverter
frequently
reports
overcurrent
and
overvoltage
faults.
Motor parameter setting is
incorrect;
The acceleration and
deceleration time is not suitable
Load fluctuations;
Reset motor parameters or motor
tuning;
Set the appropriate acceleration
and deceleration time;
Seek factory services;
1
0
Power up (or
run) to report
Err17
The soft start contactor is not
attracted;
Phase loss of three-phase input
power supply;
Check if the contactor cable is
loose;
Check if the contactor is faulty;
Check if the 24V power supply of
the contactor is normal.
;
1
1
Power on
display
The relevant device on the
control board is damaged;
Replace the control panel;