Astraada AS24DRV4075, Operation Manual

Page: 91 / 129

Astraada DRV-24 frequency inverters Fault tracking
89
Fault code Fault type Possible cause Solutions
UV
DC bus
Under-voltage
1. The voltage of the
power supply is too low.
2. The overvoltage stall
protection is not open. 1. Check the input power
of the supply line.
2. Check the setting of
relative function codes.
OL1 Motor overload
1. The voltage of the
power supply is too low.
2. The motor setting
rated current is incorrect.
3. The motor stall or load
transients is too strong. 1. Check the power of the
supply line
2. Reset the rated current
of the motor
3. Check the load and
adjust the torque lift
OL2 Inverter overload
1. The acceleration is too
fast
2. Reset the rotating
motor
3. The voltage of the
power supply is too low.
4. The load is too heavy.
5. Close loop vector
control, reverse direction
of the code panel and
long low-speed operation
1. Increase the ACC time
2. Avoid the restarting
after stopping.
3. Check the power of the
supply line
4. Select an inverter with
bigger power.
5. Select a proper motor.
OL3
Electrical
overload
The inverter will report
overload pre-alarm
according to the set
value.
Check the load and the
overload pre-alarm point.
SPI Input phase loss
Phase loss or fluctuation
of input R,S,T
1. Check input power
2. Check installation
distribution
SPO Output phase loss
U,V,W phase loss input(or
serious asymmetrical
three phase of the load)
1. Check the output
distribution
2. Check the motor and
cable
OH1 Rectify overheat 1. Air duct jam or fan
damage
2. Ambient temperature
is too high.
3. The time of overload
running is too long.
1. Refer to the
overcurrent solution
2. Redistribute
dredge the wind channel
or change the fan
3. Low the ambient
temperature
4. Check and reconnect
5. Change the power
6. Change the power unit
7. Change the main
control panel
OH2 IGBT overheat
EF External fault
SI external fault input
terminals action Check the external device
input