8. Trip information and trouble shooting
Once a trip is detected, NE200&300 would immediately block PWM
output and enter the trip protection state; meanwhile TRIP on the keyboard
would spark and the LED display the trip code. At this point one must
identify the cause of trip and its corresponding solutions according to the
method suggested in this section, if it does not work, please contact us
immediately. The trip codes and their respective solutions are present in
Table 8-1.
Note:
A trip code with a sign”
③
”indicates this trip code is only for NE300
Table 8-1 trip diagnosis and its solutions
Trip
code
Trip Type
Possible causes
Solutions
Uu1
Bus Under
voltage during
running
1.Power grid low
voltage
1. Check the input power
source.
OC1
Over current in
Acceleration
1. Acceleration time
too short
1. Increase the acceleration
time.
2. Power grid low
voltage
2. Check the input power
source.
3. Inverter power
rating too small
3. Choose inverter with
higher capacity.
OC2
Over current in
Deceleration
1. Deceleration time
too short
1. Increase the deceleration
time.
2. Large load inertia
2. Add suitable brake
devices.
3. Inverter power
rating too small
3. Choose higher capacity
drive
OC3
Over current at
constant-speed
1 .Abnormal Load
mutation
1. Check the load
2. Power grid low
voltage
2. Check the input power
source.
3. Inverter power
rating too small
3. Choose higher capacity
drive
4.Encoder sudden
offline in
4. Check the encoder and its
wiring.
