Products

Bedford W713 constant pressure water pump inverter

W713

Designed for water supply systems that require constant pressure or constant differential pressure control, automatic pump coordination and reliable fault protection.

product details

Product Overview

W713 is an intelligent controller for water pump systems. It supports pressure-based automatic water supply, multi-pump linkage and flexible pump operation modes.

The series is designed for water supply systems that require constant pressure or constant differential pressure control, automatic pump coordination and reliable fault protection.

Key Selling Points

Supports constant pressure and constant differential pressure control.
Controls up to five auxiliary pumps, allowing up to six pumps in linkage operation.
Linkage modes include synchronous, master-slave, big-small pump, one duty one standby and one VFD drive two pumps.
Manual/automatic switching can be performed by terminal or keypad.
Supports pressure transmitter feedback and resistance pressure gauge feedback.
Water supply alarms include low pressure, inlet low pressure, high pressure, low water level and sensor fault.

Core Parameters

Item	Details
Input / output, 220V single phase	AC 220V input, AC 3PH 0-220V output
Input / output, 220V three phase	AC 3PH 220V input, AC 3PH 0-220V output
Input / output, 380V three phase	AC 3PH 380V input, AC 3PH 0-380V output
Power range	220V: 0.75kW to 55kW; 380V: 0.75kW to 220kW
Rated output current range	220V: 4.5A to 210A; 380V: 2.1A to 426A
Feedback input	0/4-20mA pressure transmitter or resistance pressure gauge
Auxiliary power	+24V output for pressure transmitter, maximum 200mA
Communication	RS485 communication interface
External dimension range	Varies by power, from about H186 x W126 x D163.8mm to H870 x W503 x D362mm

Model Coverage

Model / Voltage Class	Power Range	Notes
W713-2001 to W713-2075	0.75kW to 55kW	220V class
W713-4001 to W713-4300	0.75kW to 220kW	380V class

Interface and Control

Main circuit terminals include L/N, R/S/T, DC bus, U/V/W and grounding terminals according to input type and power class.
AI1 and AI2 receive pressure feedback signals.
S1 to S4 provide digital ON/OFF input control.
AO provides 0-10V or 0-20mA analog output.
Two relay outputs can be used for alarm or valve switch signals.
RS485A and RS485B communication interfaces support multi-pump and system communication.

Application Scenarios

Building water supply and pressure boosting.
Constant pressure water supply.
Constant differential pressure water supply.
Multi-pump systems requiring automatic rotation and standby operation.

Installation and Use Notes

Set motor nameplate parameters before running.
Confirm pump direction before formal operation.
Set transducer measuring range and feedback type before pressure control.
For multi-pump systems, set each controller role and enable communication terminal resistance only where required.

FAQs

What is W713 intended for? ▶

W713 is a controller for pump systems that need to work together. It can control from pressure or temperature readings when the system has the right sensor and has been set up for that use.

How many pumps can a W713 system manage? ▶

The manual describes linked systems of up to six pumps, with one controller for each pump. Set up the controllers, pump details, sensors, and connections as one system.

Can W713 keep water pressure stable? ▶

Yes. It supports constant-pressure water supply with a pressure sensor and correct settings. Pump size and pipework still determine how much water and pressure the system can deliver.

Can W713 control by temperature? ▶

Yes. The manual describes temperature and temperature-difference control for suitable circulation or process systems. This needs the right temperature sensor and system settings.

Why do linked pumps alternate? ▶

Alternation rotates which pump does the main work. In a correctly set up multi-pump system, this can share running time among the pumps.

Can W713 use a schedule? ▶

Yes. You can set different water-supply periods to match when water is needed. The schedule should be set up for your pumps and normal water use.

What equipment is needed for pressure control? ▶

A suitable pressure sensor is part of the control system, along with matching pumps and pipework. Select the sensor for the installation and set its range correctly.

What if W713 cannot enter sleep mode? ▶

Check for an outlet-pipe leak, check-valve leak, or pressure-tank problem. If these parts are sound, review the sleep settings or ask a trained service person to inspect the system.