HBD PV500-0007M1 User Manual page 67

PV500 series solar pumping inverters
Fault
Fault type
code
Time arrival of
END
factory setting
Electrical overload
OL3
Grounding short
ETH1
circuit fault 1
Grounding short
ETH2
circuit fault 2
Velocity deviation
dEu
fault
Maladjustment fault
STo
Electronic
LL
underload fault
Hydraulic probe
tSF
damage
Possible cause
2. The PID feedback source
disappears.
The actual running time of the
inverter is above the internal
setting running time.
The inverter will report
overload pre-alarm according
to the set value.
The grounding of the inverter
output terminal is short
circuited.
The current detection circuit is
faulty.
The actual motor power
sharply differs from the
inverter power.
The load is too heavy or
stalled.
1. The control parameters of
the synchronous motors not
set properly.
2. The autotuning parameter
is not correct.
3. The inverter is not
connected to the motor.
The inverter will report the
underload pre-alarm
according to the set value.
Hydraulic probe damage
-65-
Fault diagnosis and solution
Solutions
2. Check the PID feedback
source.
Ask for the supplier and adjust
the setting running time.
Check the load and the overload
pre-alarm point.
Check whether the motor wiring
is proper.
Change the Hall.
Change the main control panel.
Set motor parameters correctly.
1. Check the load and ensure it
is normal. Increase the detection
time.
2. Check whether the control
parameters are normal.
1. Check the load and ensure it
is normal.
2. Check whether the control
parameter is set properly or not.
3. Increase the maladjustment
detection time.
Check the load and the
underload pre-alarm point.
Change the damaged hydraulic
probe.