HBD PV500-0007M1 User Manual page 68

PV500 series solar pumping inverters
Fault
Fault type
code
PV reverse
PINV
connection fault
PV overcurrent
PVOC
PV overvoltage
PVOV
PV undervoltage
PVLV
Fault on
communication with
E-422
boost module 422
Bus overvoltage
detected at the
OV
boost module side
Weak light alarm
A-LS
Possible cause
Incorrect PV wiring
1. The acceleration or
deceleration is too fast.
2. The inverter power is too
low.
3. The load transients or is
abnormal.
4. The grounding is short
circuited.
1. The solar cell panel input
voltage is too high.
2. Model -4 is set as another
model.
1. The power of the solar cell
panel series is too low or it is
cloudy and rainy weather.
2. The motor start-up current
is too high.
Improper contact with the
communication cables
The sun light changes
suddenly.
The sun light is weak or the
solar cell panel configuration
is insufficient.
-66-
Fault diagnosis and solution
Solutions
Change the wiring direction of
the positive and negative
terminals and connect the
cables again.
1. Increase the ACC or DCC
time.
2. Select the inverter with a
larger power.
3. Check if the load is short
circuited (the grounding short
circuited or the wire short
circuited) or the rotation is not
smooth.
1. Reduce the number of solar
cell panels that are wired in
series.
2. Check and reset the model.
1. Increase the number of solar
cell panels or perform the test in
the normal sun light.
2. Change the motor.
Check the four communication
cables of 422 and ensure that
they are connected properly.
Adjust the boost PI parameters.
Enlarge the values of P19.07
and P19.08.
The equipment automatically
runs when the light becomes
strong.
Check whether the solar cell