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Fault information and trouble shooting
Trip
Trip Type
code
Bus Under voltage
Uu1
during running
Over current in
OC1
Acceleration
Over current in
OC2
Deceleration
Over current at
OC3
constant-speed
Over Voltage in
Ou1
Acceleration
Over voltage in
Ou2
deceleration
Over voltage in
Ou3
constant speed
SINAMICS V50 converter
70
Operating Instructions, 04/2022, FW V1.0, A5E44777205B AB
Possible causes
1. Power grid low
voltage
1. Acceleration time
too short
2. Power grid low
voltage
3. Drive power rating
too small
1. Deceleration time
too short
2. Large load inertia
3. Drive power rating
too small
1. Abnormal load
mutation
2. Power grid low
voltage
3. Drive power rating
too small
4. Encoder sudden
offline in closed-loop
vector control
1.Acceleration time too
short
2.Power supply
abnormal
1.Deceleration time
too short
2.Large load inertia
1. Power supply
abnormal
2. Large load inertia
Solutions
1. Check the input power
source.
1. Increase the acceleration
time.
2. Check the input power
source.
3. Choose drive with higher
capacity.
1. Increase the deceleration
time.
2. Add suitable brake
devices.
3. Choose higher capacity
drive
1. Check the load
2. Check the input power
source.
3. Choose higher capacity
drive
4. Check the encoder and its
wiring.
1. Increase the acceleration
time
2. Check the input power
source.
1. Increase the deceleration
time
2. Add suitable brake
devices.
1. Check the input power
source.
2. Add suitable braking
devices.
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