
3.5 Introduction to related faults of photovoltaic water pump:
Sleep display U-L1 When the inverter panel displays this code, it means that the inverter
enters sleep mode (not a fault). It will enter sleep mode only when the inverter is running
at low speed for a long time. When the sun is strong enough, The inverter will
automatically exit the sleep state and restart. For details, please refer to the detailed
introduction of parameters F08.50 and F08.52.
FULL is displayed when the water is full. When the inverter panel displays this code, it
means that the inverter has detected a water full signal (need to connect a pressure
sensor and other equipment). Refer to parameters F16.08, F16.09, F16.10 for specific
introduction.
Underload display E-PT. When the inverter panel displays this code, it means that the
inverter has detected an underload. The underload detection is determined by parameters
F16.12 and F16.13. The underload automatic reset time is determined by F16.14. When
the inverter output current is less than the current value set by F16.12 and continues to
run for a period of time (running time is greater than the time set by F16.13), the inverter
will display the underload interface. **If the inverter falsely reports underload, you can set
the underload current (F16.12) parameter to a smaller value. Generally, the no-load
current of a three-phase asynchronous motor is about 30% of the rated motor current.
4. Recommended parameter settings,
take SP200-4T-2.2G as an example
:
Steps
Parameter
Parameter meaning
Setting
value
Remarks
1
F00.28
Function parameter recovery
1
Restore factory settings
2
F16.00
Vmpp voltage setting
selection
1
CVT mode
3
F16.01
Given voltage of CVT mode
450
●
4
F16.12
Under load detection current
30.0
Underload detection
current
5
F00.01
Run command channel
1
Terminal start
Chapter 8 Appendix
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