Technical Questions and solutions
1. How to achieve Automatic start after stop?
If it is controlled by keyboard, so there is no need to set any parameter(P47.03 waiting time)If you want to
control by external switch. First set P00.06=1 and use a wire or switch to connect com and DI1,When the
switch is closed, the drive run, when the switch is open, the drive stop
2. How to use a float in the water tank to stop the pump if the tank is full?
If your float signal is digital signal Use float switch to short DI 3 and com ,see diagram 1.3
143.Use level probe in the well for protection against dry running
1 st solution: See self learning of dry run(For LED display)
2 nd solution: do it manually Set P24.13=30%-60%(as per real empty load current percentage based on
rated current) and P24.14 P24.16 and P23.21
3 rd solution: If your sensor is digital switch ,just short D4 and com
4 th solution: If your float signal is Analog signal, Connect Ai2 and 10V and GND and set P41.00=23 and
P41.03-P41.06
4.How to set minimum frequency ( for example) 30hz and maximum 50HZ
Set P47.05=30HZ and 47.06 to some time and 47.07 to some time. Please refer to details of P47.05-47.07
5.If pump is 60HZ frequency, how to set max frequency?
Notice: If your motor rated frequency is 60HZ First solution for you, P01.06=P01.08=P11.05=60HZ.
Quick setting and easier way: you should set P00.11=02 If your motor is three phase; if your motor is single
phase with capacitor ,set P00.11=22;If your motor is single phase without capacitor ,set P00.11=32
6. Does the product need to set a lot of parameters?
No, it doesn't. The inverter has a self-adaptive and self-learning function. It is automatic start and
stop, you can press Run key to start, or you just wait for P47.03=60S(Default) then it will automatically
start
7. Could it replace my previous PV pumping inverter?
Yes, of course. Selecting inverter model according to the rated voltage, current and power of the
water pump. A bit more is better. Then take off the old one and put ours on, the system will work.
8. How to design solar PV water pump system?
Key point: the rated VOC and VMP and power of the PV Array need to match the input range of
the inverter. If needed, we will provide technical support online.
9. How to make the water pump system work without sunshine?
Usually, solar PV water pump system can meet the needs of pumping water.
If there is no sunshine, the system will not work. But out inverter could also support AC input. So,
connect the power grid or diesel power generation to the inverter, the pumping system will work. If
necessary, keep switch and interface locations during the system design
10. How to check and solve basic problem of inverter trips and error
a:Check the total vmp and voc of solar panels ,solar panel technical data
b:Check motor pump power and rated current
c: Check the distance between motor and inverter
d: Check trip record r25.00 r25.01 25.02 25.03 r26.00 r26.01 r26.02 r26.03 r26.08 r26.09 r26.10 r26.11
e: Check troubleshooting fault and find relevant solutions
f : Check if motor insulation has been damaged or motor is blocked
