1 / 5
In regions with abundant sunlight, solar systems for agricultural irrigation are becoming increasingly popular. The solar pump inverter is a critical component of the system, allowing direct connection to solar panels for convenient operation and energy saving. Our SD100 and SD500 series apply to transforming three-phase 380V or single-phase 220V submersible deep well pumps into efficient solar water pump systems.


| Category | Terminal Symbol | Terminal Function |
|---|---|---|
| Power Supply | 24V / COM | Provides 24V±10% power, max 200mA for digital I/O or sensors. |
| Digital Input | S1 - S4 | Forced switch to mains, water level alarms, and phase algorithm selection. |
| Communication | RS485 / 422 | Standard ModBus protocol and special boost module communication. |
| Relay Output | RO1A/B/C | Contact capacity: 3A/AC250V. Used for auto mains & PV switching control. |


| IGBT | STARPOWER / INFINEON / FUJI |
| Fans | PELKO / NIDEC |
| Capacitors | RUBYCON / JIANGHAI |
| Electronics | DELTA |