Schneider SR3MBU01BD Smart Relay Communication Module

Product Overview

The Schneider Electric SR3MBU01BD is a Zelio Logic Modbus communication module designed for SR3 series 24 V DC smart relays. It adds Modbus RTU communication capability to Zelio Logic smart relay systems, allowing the smart relay to communicate with PLCs, HMIs, SCADA systems, and industrial monitoring platforms.

This module is mainly used for expanding the communication capability of small automation controllers and integrating Zelio smart relays into industrial networks.

Main Specifications

• Manufacturer: Schneider Electric
• Model: SR3MBU01BD
• Series: Zelio Logic SR3
• Product Type:
  • Smart Relay Communication Module
  • Modbus Slave Communication Module
  • Industrial Network Interface Module
• Compatible Controller:
  • Schneider Zelio Logic SR3 smart relay (24 V DC models)
• Communication Protocol:
  • Modbus RTU
  • Modbus ASCII
• Communication Interface:
  • RS-485
• Power Supply:
  • 24 V DC

Technical Specifications

Communication

• Protocol:
  • Modbus Slave
• Physical Interface:
  • RS-485 serial communication
• Wiring Mode:
  • 2-wire / 4-wire
• Transmission Speed:
  • 1200 to 57600 baud
• Communication Address:
  • 1–247
• Data Format:
  • RTU
  • ASCII
• Parity:
  • None
  • Even
  • Odd
• Connection:
  • RJ45 communication connector

Electrical Specifications

• Supply Voltage: 24 V DC
• Compatible Smart Relay Voltage: 24 V DC SR3 B...BD series
• Power Indication: LED
• Communication Indication: LED
• Power Consumption: Low power industrial communication module

Mechanical Specifications

• Mounting Type:
  • Direct mounting on Zelio Logic smart relay
• Connection Type:
  • Plug-in communication module
• Weight:
  • Approx. 0.11 kg
• Terminal Wiring:
  • Screw terminals

Features & Advantages

• Original Schneider Electric Zelio Logic accessory
• Adds Modbus communication capability to smart relays
• Enables connection with PLC and SCADA systems
• Supports standard RS-485 industrial networks
• Easy installation and configuration
• Compact design saves cabinet space
• Improves monitoring and remote control capability
• Suitable for distributed automation applications

Applications

Used in:

• Factory automation systems
• Small machine control
• Building automation
• Pump control systems
• HVAC control
• Energy monitoring systems
• Remote data acquisition systems

Typical applications:

• Zelio relay connected to PLC
• Smart relay data monitoring through SCADA
• Remote parameter reading
• Industrial equipment communication