3 Phase Duplex Pump Controller, ≤1 Second Fault Switch, Zero Downtime

3S-32-PA 3 Phase duplex pump intelligent control panel

Dual-Pump Redundancy Guarantee, Industrial-Grade Joint Control Hub, Second-Level Fault Switching

An industrial-grade intelligent control core built for continuous water supply and drainage systems

System Intelligent Hub

In industrial/municipal water supply and drainage systems requiring 7×24 uninterrupted operation, the 3S-32-PA 3 phase Modbus intelligent pump controller delivers dual-pump intelligent joint control with an industrial-grade design core, precisely addressing three core scenarios:

Second-level fault switching: Standby pump activated within≤1 second when the main pump is abnormal, ensuring zero downtime

Intelligent flow enhancement: Dual pumps in parallel to meet sudden demand

Pump unit lifespan optimization: Automatic rotation mechanism based on operating hours/start-up times

Its bare-board structure is specifically designed for embedding into protective control cabinets, helping integrators and engineering parties build highly reliable dual-pump systems.

Customized for Dual-Pump Working Conditions

1. Intelligent Dual-Pump Scheduling Engine

Main-standby mode: Automatically and quickly switches to the standby pump when abnormalities occur.

Alternative mode: Automatically switches the main pump based on operating duration/start-up times

Parallel mode: Both pumps start and stop synchronously to maximize instantaneous water supply/drainage capacity

2. Industrial-Grade Triple Protection System

This duplex pump intelligent control panel integrates a comprehensive protection system with 17 electrical protections:

Current/voltage signal protection: Overcurrent, undercurrent, overvoltage, undervoltage, three-phase imbalance, phase loss, phase sequence, short circuit.

Operating status/load protection: Locked rotor, blockage, dry running, rust prevention, frequent start-stop.

Sensor/external signal protection: Signal loss, sensor error.

Environment/device internal protection: Motor water seepage, motor overheating.

Visual fault diagnosis: LCD screen displays real-time parameters and supports fault code query .

Environmental adaptability: Operates at -20℃~+55℃with 95% humidity (no condensation).

3. Minimalist Engineering Integration Design

The 3 phase Modbus intelligent pump controller adopts a compact bare-board structure: with an exquisite layout, it fits various control boxes (120×185×65mm)

Communication expansion interface: Reserved RS485 (Modbus RTU) interface, supporting access to PLC/SCADA systems for remote monitoring and centralized management

Municipal Drainage Engineers

Pain points: Inadequate drainage during rainstorms, frequent failures of old control equipment

Solution from 3S duplex pump intelligent control panel:

Parallel dual pumps increase peak flow by 30%

Automatic fault switching reduces on-site repair frequency

On-screen status codes guide quick remote problem localization

Industrial Equipment Integrators

Pain points: Diverse customer needs, limited cabinet space solution from this 3 phase Modbus intelligent pump controller:

186*66*121mm compact bare-board layout, reducing occupied volume compared to traditional solutions

Concise wiring with clear zoning, improving commissioning efficiency

Complete technical manuals and wiring diagrams provided, supporting quick integration and deployment

Sealing protection: 

It is recommended to integrate the duplex pump intelligent control panel into control boxes with IP55 or higher protection rating

Phase sequence verification: 

Confirm the power supply sequence with a phase sequence meter before first power-on to avoid false triggering of protection

Power expansion: 

When the pump power exceeds 4kW, an external contactor adapted to the load is required

Q1: How does the 3 phase Modbus intelligent pump controller determine and switch to the standby pump?

A1: In main-standby mode, the controller monitors the main pump status in real-time. Once abnormalities such as overload or no-load occur, it will quickly and automatically switch to the standby pump and record the fault code. The switching logic supports custom configuration.

Q2: Is the duplex pump intelligent control panel applicable if it needs to control water pumps above 30kW?

A2: This 3 phase Modbus intelligent pump controller supports a maximum of 30kW per pump. If exceeding this, it can be expanded to soft start, star-delta and other starting methods through external components.

Q3: How to determine if additional check valves or pressure balancing measures are needed when dual pumps are in parallel?

A3: It is recommended to install check valves at the water outlet of each pump to avoid backflow during shutdown. If the system has a drop or back pressure, pressure buffer devices should be configured according to actual working conditions to ensure stable operation.

For wiring diagrams, technical manuals, or Modbus communication protocols, please contact 3S official or authorized engineering channel partners.