HBD PV500-0007M1 User Manual page 65

PV500 series solar pumping inverters
Fault
Fault type
code
OC3
Overcurrent when
constant speed
running
UV
Bus undervoltage
OL1
Motor overload
OL2
Inverter overload
SPI
Input phase loss
SPO
Output phase loss
OH1 Rectifier overheat
Possible cause
too low.
4. The load transients or is
abnormal.
5. The grounding is short
circuited or the output is
phase loss.
6. There is strong external
interference.
7. The overvoltage stall
protection is not open.
1. The voltage of the power
supply is too low.
2. The overvoltage stall
protection is not open.
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. The acceleration is too fast.
2. The rotating motor is reset.
3. The voltage of the power
supply is too low.
4. The load is too heavy.
5. The motor power is too
small.
Phase loss or fluctuation of
input R,S,T
U,V,W phase loss output (or
serious asymmetrical three
phase of the load)
1. Air duct jam or fan damage 1. Dredge the wind channel or
-63-
Fault diagnosis and solution
Solutions
circuited (the grounding short
circuited or the wire short
circuited) or the rotation is not
smooth.
5. Check the output
configuration.
6. Check if there is strong
interference.
7. Check the setting of relative
function codes.
1. Check the input power of the
supply line.
2. Check the setting of relative
function codes.
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.
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.
1. Check input power.
2. Check installation distribution.
1. Check the output distribution.
2. Check the motor and cable.