Overview
The booster pump controller is a dedicated variable-frequency drive designed to maintain constant water pressure in residential, commercial and small utility water systems. It works with both single-phase and three-phase AC induction motors in the sub-1.5 kW range and is optimised for domestic booster, overhead-tank and pressure-boosting applications.
Using a pressure sensor input, the drive continuously measures line pressure and adjusts pump speed to keep pressure within the configured set-point band. It incorporates soft-start, dry-well detection and comprehensive protections to improve pump and motor life, while providing a compact, easy-to-use solution that can be deployed with existing pumps.
Key Features
Constant pressure control with pressure sensor feedback
Maintains nearly uniform outlet pressure by varying pump speed based on a pressure transducer input. Suitable for small and medium booster systems and domestic pressure-boosting applications.
Supports single-phase and three-phase induction motors
A single drive family can be configured to run compatible single-phase or three-phase AC induction motors within its power range, simplifying stocking and application engineering.
Eliminates external starting capacitors for single-phase motors (supported configurations)
Built-in phase-shifting and self-start capability remove the need for separate starting and running capacitors on compatible single-phase motors, reducing system components and wiring complexity.
Soft-start and reduced mechanical stress
Variable-frequency soft-start limits inrush current, minimises hydraulic shock and reduces pipe and pump wear compared to direct-on-line starting.
Two model options covering typical domestic booster ratings
- ~0.6–0.75 kW single-phase / 0.75 kW three-phase
- ~0.75 kW single-phase / 1.1 kW three-phase
(Exact motor compatibility and ratings as per final datasheet.)
Protection for pump, motor and drive
Integrated protections include over-voltage, under-voltage, overcurrent, earth fault and overload, helping protect the pump-motor set and the drive in fault conditions.
Works with a wide range of tank sizes
Control algorithms allow operation even with relatively small supply tanks, making it suitable for compact domestic systems as well as larger storage tanks.
User-friendly interface
On-board four-digit seven-segment LED display with a simple three-key keypad for parameter setting, status viewing and basic diagnostics.
Certified and robust design
Designed to meet relevant safety and EMC standards, with UL/CSA certification available on specific variants (refer to datasheet), enabling use in markets that demand certified booster pump controllers.
Applications
- Domestic and apartment building booster systems for constant tap/shower pressure
- Pressure boosting in small commercial buildings, hotels and offices
- Overhead-tank based systems where constant outlet pressure is required
- Retrofitting existing DOL booster pumps with a variable-speed controller
- Small community water distribution systems in housing layouts or gated communities
Technical Specifications (typical, model dependent)
| Input (line supply) | |
|---|---|
| Voltage | Single phase 220 to 240 Vac |
| Frequency | 50 Hz |
| Input current | Approx. 12.2 A for 1.1 kW drive rating |
| Output (motor) | |
| Voltage | 230 Vac (single-phase or three-phase, model dependent) |
| Output current (typical) |
Single-phase: 9.8 A for ~0.75 kW pump Three-phase: 6.1 A for ~1.1 kW pump |
| Control method | Quadratic V/F control optimised for pump torque characteristics |
| Output frequency | 0–50 Hz |
| Control & interfaces | |
| Digital input | 1 opto-isolated digital input for motor enable / start-stop or external interlocks |
| Analog input | Pressure transmitter input (for constant-pressure control) – as per application notes/datasheet |
| User interface | 4-digit 7-segment LED display with 3-key tactile keyboard |
| Indications | “Power On” and “Fault” LEDs |
| Protections | |
| Electrical & drive | Over-voltage / under-voltage, overcurrent / overload, earth-fault / short-circuit, drive over-temperature |
| Pumping protection | Dry-well / no-water detection via pressure/flow behaviour |
| (Exact protection set as per final product datasheet and safety manual.) | |
| Mechanical & environmental | |
| Mounting | Vertical mounting position |
| Ambient temperature | 0 to 45 °C |
| Humidity | Up to 90% non-condensing |
| Approx. dimensions (W × H × D) | 238 × 165 × 162 mm |
| Enclosure rating | As per model (panel-mount / IP rated – consult datasheet) |
| Certifications & standards | UL/CSA (model dependent) and relevant IEC safety/EMC standards |
Enquiry Note
If you are interested, please share a few lines about your product, motor rating and supply voltage. We will review your requirement, map it to the closest Versa motor–drive platform and get back to you with next steps.
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