Schneider SR3MBU01BD Modbus Communication Module

Product Description

The Schneider Electric SR3MBU01BD is a high-performance Modbus communication module specifically designed for Zelio Logic SR2 and SR3 smart relays. It enables seamless integration of these relays into Modbus RTU networks, allowing real-time remote monitoring and control. Moreover, the module ensures reliable communication between smart relays and master devices such as PLCs, HMIs, or SCADA systems. Its compact design and versatile mounting options make it ideal for space-constrained industrial control panels.

Key Features & Functional Highlights

• RS-485 Modbus RTU Connectivity: Provides robust communication between Zelio Logic relays and Modbus master devices.

• EEPROM Memory: Stores configuration and operational data for up to 10 years, ensuring long-term reliability.

• Flexible Baud Rate: Configurable up to 57600 bps to meet diverse industrial network requirements.

• Easy Integration: Compatible with Zelio Soft for programming, diagnostics, and monitoring.

• LED Status Indicators: Clearly display communication status and power, enhancing troubleshooting efficiency.

• Galvanic Isolation: Ensures safe separation between the communication line and relay electronics.

Technical Specifications

Electrical Characteristics

• Supply Voltage: 24 V DC

• Power Consumption: ~3 W

• Communication Protocol: Modbus RTU (Slave mode)

• Interface: RS-485 serial port

• Transmission Frame: RTU, ASCII

• Baud Rate: 1200–57600 bps

• Parity Options: None, Odd, Even

• Number of Addresses: 1–247

Mechanical & Environmental

• Mounting: DIN rail or screw-mounted

• Dimensions (W x H x D): 35.5 mm × 107.6 mm × 59.5 mm

• Weight: 200 g

• Operating Temperature: -20°C to +55°C

• Storage Temperature: -40°C to +85°C

• Protection Rating: IP20 (terminal block), IP40 (front panel)

• Operating Altitude: Up to 2000 m

• Relative Humidity: 95% without condensation

Connections & Wiring

• Electrical Connection: 1 RJ45 connector

• Terminal Types: Screw terminals for solid, semi-solid, or flexible cables (AWG 14–24)

• Tightening Torque: 0.5 N·m

• Wiring Mode: 2-wire or 4-wire

Certifications & Standards

• Product Certifications: UL, CSA, GL, GOST, C-tick

• Compliance: RoHS, EMC IEC 61000 series, IEC 61131-2

• Environmental Resistance: Shock, vibration, and surge protection

Typical Applications

• Small automation systems requiring remote access

• Integration of Zelio Logic relays into PLC or SCADA networks

• Monitoring and control of lighting, pumps, or HVAC systems

• Industrial control panels with space limitations

Support & Reliability

The SR3MBU01BD offers long-term operational reliability with robust environmental protection. In addition, Schneider Electric provides software support via Zelio Soft for configuration and troubleshooting. Its design ensures low maintenance requirements and straightforward installation.

FAQ

Q1: Which Zelio Logic models are compatible with SR3MBU01BD?
A1: The module supports all SR2 and SR3 smart relays with 24 V DC supply.

Q2: Can multiple SR3MBU01BD modules be used on a single Modbus network?
A2: Yes, up to 247 addresses are supported on the same RS-485 network.

Q3: What software is needed to configure the module?
A3: Zelio Soft software is required for configuration, monitoring, and diagnostics.

Q4: Is the module suitable for harsh industrial environments?
A4: Yes, it offers galvanic isolation, IP20/IP40 protection, and wide temperature operation.

Q5: What wiring options are available for installation?
A5: Supports 2-wire or 4-wire connections using screw terminals for solid, semi-solid, or flexible cables.