Trip
code
Trip Type
Possible causes
Solutions
up.
3.The Curve of V/F
is not fit
3. Adjust the V/F curve and
torque boosting
performance.
4. Motor always
works with heavy
load at low speed.
4. Use specialized electric
motor.
5. Motor blocked to
stall or sudden large
load change
5. Check whether the motor
or the load is blocked to stall
or not.
6.Motor power too
low
6. Use motor and inverter of
suitable power ratings
OL2
Inverter
overload
1. Low voltage in
power grid
1. Check the input power
source.
2. Load too heavy
2. Select bigger capacity
inverter.
3. Acceleration too
fast
3. Increase the acceleration
time
4.Restart the motor
still in turning
4. Avoid restarting when the
motor is in rotation.
EF0
Communication
fault
1. Baud rate and
parity checksum is
set incorrect
1. Check communication
parameters correct or not.
2. Communication
interrupted for long
time
2. Check the interface wiring.
EF1
External
terminal fault
1. Faults comes
from external
control circuit
1. Check the external input
SP1
Input phase loss
1. Input R,S,T have
phase loss or
imbalance
1. Check input voltage
SPO
Output phase
loss
1.There is lack of
U,V,W when output
1. Check U-V-W motor wiring
2.There is a serious
unbalance in output
2. Check the load
EEP
EEPROM error
1.Function code
parameter writing
1. Recover factory defaults
