SI22 Solar Pump Inverter Manual
| F2.00: 1 F0.02: 1 |  | Terminal control |
| F2.29: 1 |  | Active relay |
| FE14: 20.00 |  | Min Frquency |
| FA.19=00 |  | Single-phase motor |
Security Tips
- Only qualified personnel can operate the equipment.
- AC power supply should not be connected with output ports U, V, and W, otherwise, there is a danger of damage to the frequency inverter.
- After electrified, it is forbidden to contact the internal wiring board and its parts. Otherwise, it will cause the danger of electric shock
- The user can only operate on it after 5 minutes when cutting off power.
Technical Specification
| Solar pump inverter power(KW) | Pump | Max solar power input (KW) | Max DC input voltage V | Recommend Voc voltage (V) | Rated output current(A) | Output frequency (Hz) | |
| Rated power (KW) | Rated voltage( V) | ||||||
| SI22-D1 series, DC60-400VDC input, 3 phase 110-230VAC output, suitable for 110VAC pump | |||||||
| 0.75 | 0.75 | 110 | 1.0 | 400 | 175~380 | 7A | 0-320 |
| 1.5 | 1.5 | 110 | 1.95 | 400 | 175~380 | 10A | 0-320 |
| SI22-D3 series, D60V-400V input, 3 phase 220-240VAC output, suitable for 220VAC pump | |||||||
| 0.75 | 0.75 | 220 | 1.0 | 400 | 360~400 | 4A | 0-320 |
| 1.5 | 1.5 | 220 | 1.95 | 400 | 360~400 | 7A | 0-320 |
| 2.2 | 2.2 | 220 | 2.86 | 400 | 360~400 | 10A | 0-320 |
Note: SI22 products can also drive single-phase pumps and please select the current-matched model.
Product Model
Appearance and Dimension
Solar Pump Controller Wiring
Standard Wiring for three-phase motor
Connection for single-phase motor
Note: The first connection solution for better performance is recommended.
Note: The first connection solution for better performance is recommended.Basic Operation
Indicator and Key
Icon | Name | Function |
| Power | ON: The power is 60-400VDC. OFF: Power is abnormal. |
 | Status | OFF: It is ready to run； BLINKING: Fault or alarm comes； ON: The four indicates will be on in turn and stand for output frequency is approaching 30%, 50%, 70%, and 90% of rated frequency in sequence |
 | Start/Stop | OFF Status: Press it to run ON Status: Press it to stop BLINKING Status: Press it to reset |
Dial-up and External Port:
Icon | Name | Function |
 | Keyboard | Support optional keyboard |
 | IOT | Support optional IOT to access online monitoring, offline data storage, and WIFI hotspot |
 | Quick Dial-up | Default D1 for AC110V pump and D3 for AC220VC pump can be selected by quick dial-up (any D1/D3 switch will only take effect after power on again) |
Trial Run
- Please double-check the cable connector according to the user manual.
- Press the “Start/Stop” button to run it, and check whether the pump rotary direction is correct. If the direction is correct, please go to step(4); Otherwise, please go to step (3).
- Press the “Start/Stop” button to stop it and change any two cables to adjust the direction; Press the “Start/Stop” button and then it will run smoothly.
- The default setting for Start/Stop will store the operation command while power off. So it will automatically run or stop along with sunrise or sunset.
Quick Troubleshooting
- Power is still off when connecting power: please check whether the input voltage is 60-400VDC or check the cable connections of the solar array.
- Status indicator is blinking: please reset it by pressing “START/STOP” for 1 second. Otherwise, please ask for support.
