This series inverter is designed for water supply at constant pressure. It can switch to as many as 7 pumps, each of them enjoying free manual or automatic control with no influence on the other pumps working. The total number of pumps to be switched to can be set from the keypad program, with setting value of 2 ~ 4 for multi-pump circulation frequency conversion. Instantaneous impact on value while being switched between pumps can be avoided through special processing. All the individual pumps can operate under even load through logic arrangement incase a certain pump may risk erosion due to long idling.
Specifications
- Input power
- Rated voltage: 3-phase 380v
- Rated frequency: 50/60HZ
- Output
- Control mode: voltage vector control
- Rated voltage: 3-phase 0~380V
- Frequency range: 1.00~150.00HZ
- V/F compensation: curves to be set between 1~8
- Overload capacity: 150% (rated current), 1 minute
- Operation Functions
- Frequency setting: keypad and external analogue signal (0~5V, 0~10V, 0~20MA)
- On/Off control: passive contact control or keypad control
- Speed up/down time: 0.1~3000s (to reach the change time for 50HZ)
- Protection
- Under-voltage, Out phase, Over-voltage, Over-current, Overload, Overheat
- Conditions
- Equipment location: No tangy active gases or dust
- Ambient temperature: -10~50
- Ambient humidity: Below 90% (no bead coagulation)
- Vibration intensity: Below 0.5G!!fea
- Typical functions
- Built-in PID adjuster and positive/negative feedback control.
- Presetting for pressure or flow.
- Constant pressure control and constant flow control.
- Logic unit for circulating inverting and fixed inverting control.
- Dynamical display for the value of the controlled parameters.
- In-between relay control unit for system configuration.
- Pump control function for fire fighting.
- Timing control of water supply.
Main Products
Frequency Inverter