NE200/300 Series Drive User Manual
188 Chapter 7 Fault information and solution
Trip
code
Trip Type
Possible causes Solutions
OC3
Over
current at
constant-sp
eed
1. Abnormal load
mutation
1. Check the load
2. Power grid low
voltage
2. Check the input power
source.
3. Drive power rating
too small
3. Choose higher capacity
drive
4.Encoder sudden
offline in closed-loop
vector control
4. Check the encoder and its
wiring.
Ou1
Over
Voltage in
Acceleratio
n
1.Acceleration time
too short
1. Increase the acceleration
time
2.Power supply
abnormal
2. Check the input power
source.
Ou2
Over
voltage in
deceleratio
n
1.Deceleration time
too short
1. Increase the deceleration
time
2.Large load inertia 2. Add suitable brake
devices.
Ou3
Over
voltage in
constant
speed
1. Power supply
abnormal
1. Check the input power
source.
2.Large load inertia 2. Add suitable braking
devices.
GF
③
Ground
Fault
1. One output phase
got short circuit
problem.
1. Check whether the electric
motor insulation is
weakening.
2. Check whether the wiring
between the frequency
converter and the electric
motor is damaged.
SC
Load
short-circuit
1. Wiring of drive and
motor get
phase-to-phase short
circuit
1. Check whether the electric
motor coil is short circuit.
2.Damage of the
inverting module
IGBT
2. Ask for the services from
manufactures.
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