Santerno SINUS MINI Series - Page 48

SINUS MINI High performance Vector Control Inverter User Manual
47
Failure
No
Failure
code
Failure
description
Potential causes
Solutions
5
occ2
IGBT module
protection in Dec
process
Low grid voltage
Check input power supply
Rotating inertial of load is too large
Choose appropriate energy
braking components
Improper setting of motor
parameters
Set motor parameters properly
Deceleration time is too short
Lengthen deceleration time
Power level of inverter is small
Replace to inverter with proper
model
6
occ3
IGBT module
protection in
constant speed
process
Sudden change of load during
operation
Decrease load’s abrupt frequency
change and amplitude
Improper setting of motor
parameters
Set motor parameters properly
Power level of inverter is small
Replace to inverter with proper
model
10
ou1
Over voltage
protection when
acceleration
operation
Motor short to ground
Check motor wiring
Abnormal input power supply voltage
Check input power supply
Fast start-up again when motor
operates with high speed
Start again after the motor stop
rotating
11
ou2
Over voltage
protection when
deceleration
operation
Motor short to ground
Check motor wiring
Rotating inertial of load is too large
Choose appropriate energy
braking components
Deceleration time is too short
Lengthen deceleration time
12
ou3
Over voltage
protection when
operation with
constant speed
Motor short to ground
Check motor wiring
Abnormal input power supply
Check input power supply
15
oH2
Heat sink 2 over
temperature
protection
Ambient over-temperature
Lower the ambient temperature
and strengthen ventilation and
radiation.
Blockage of air duct
Clean the dusts, wool and other
foreign objects in the air duct.
Fan failure
Check whether fan wirings are
well connected.
Replace a new fan of the same
model.
Inverter module failure
Seek for technical support
Temperature detection circuit failure
Seek for technical support
16
LU
Power under
voltage
The power voltage is lower than the
minimum operating voltage of the
equipment
Check input power supply
The internal power source of the
inverter is abnormal
Seek for technical support
17
oH1
Heat sink 1 over
temperature
protection
Ambient over-temperature
Lower the ambient temperature
and strengthen ventilation and
radiation.
Blockage of air duct
Clean the dusts, wools and other
foreign objects in the air duct.
Fan failure
Check whether fan wirings are
well connected.
Replace a new fan of the same
model.