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SR3MBU01BD
Schneider SR3MBU01BD available at EU Automation. Get in touch today for a quick price.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Schneider SR3MBU01BD is a Zelio Logic Modbus slave communication module designed for compatible SR3 B…BD smart relays with a 24 V DC supply. It enables the connected relay to exchange data with a Modbus master over an RS485 network, supporting integration into industrial monitoring and control systems.
Equipped with an RJ45 communication connector, the SR3MBU01BD supports two- or four-wire connections and both Modbus RTU and ASCII transmission formats. Selectable communication rates from 1,200 to 57,600 baud, configurable parity, and slave addresses from 1 to 247 provide flexibility when matching network requirements. Dedicated power and communication LEDs allow at-a-glance status checks. With a net weight of 0.11 kg, this compact module adds serial communication capability to a compatible Zelio Logic control setup.
Equipped with an RJ45 communication connector, the SR3MBU01BD supports two- or four-wire connections and both Modbus RTU and ASCII transmission formats. Selectable communication rates from 1,200 to 57,600 baud, configurable parity, and slave addresses from 1 to 247 provide flexibility when matching network requirements. Dedicated power and communication LEDs allow at-a-glance status checks. With a net weight of 0.11 kg, this compact module adds serial communication capability to a compatible Zelio Logic control setup.
| Specification | Description |
|---|---|
| Manufacturer | Schneider Electric |
| Part Number | SR3MBU01BD |
| Product Family | Zelio Logic |
| Product Category | PLC Systems |
| Module Type | Modbus slave communication module |
| Description | Compact communication expansion module that connects compatible 24 V DC Zelio Logic SR3 smart relays to a Modbus serial network. |
| Rated Supply Voltage | 24 V DC |
| Product Compatibility | Zelio Logic SR3 B…BD modules with a 24 V DC supply |
| Communication Protocol | Modbus |
| Communication Interface | RS-485 |
| Network Connector | One RJ45 connector |
| Wiring Configuration | 2-wire or 4-wire |
| Transmission Formats | RTU and ASCII |
| Supported Transmission Rates | 1,200, 2,400, 4,800, 9,600, 19,200, 28,800, 38,400, and 57,600 baud |
| Parity Options | None, odd, or even |
| Configurable Network Address | 1–247 |
| Status Indicators | One communication LED and one power-on LED |
| Terminal Type | Screw terminals |
| Single-Conductor Terminal Capacity | 0.25–2.5 mm² for solid, semi-solid, or flexible conductors with cable ends |
| Terminal Tightening Torque | 0.5 N·m |
| Mounting Options | Rail mounting or screw mounting using retractable lugs |
| Ingress Protection | IP40 front panel; IP20 terminal block |
| Storage Temperature | −40 to +70°C |
| Relative Humidity | Up to 95%, without condensation or dripping water |
| Maximum Operating Altitude | 2,000 m |
| Net Weight | 0.11 kg |
What is the purpose of this communication module?
The SR3MBU01BD adds Modbus slave communication to a compatible Zelio Logic smart relay. It allows the relay to exchange data with a Modbus master over an RS485 serial network.
Which smart relays are compatible with this module?
This module is designed for Zelio Logic SR3 B...BD modular smart relays with a 24 V DC supply. Check the base relay's full reference and supply voltage when selecting a communication module.
Does this module act as a Modbus master or slave?
It operates as a Modbus slave, responding to requests from a Modbus master. It is not a master controller for other devices on the network.
Which communication interface and connector does it use?
The module uses an RS485 communication interface with one RJ45 connector. Although the connector is an RJ45 type, the specified communication interface is serial RS485, not Ethernet.
Which Modbus transmission formats are supported?
The SR3MBU01BD supports both Modbus RTU and Modbus ASCII transmission formats. The selected format must match the configuration of the Modbus master.
What serial communication speeds can be selected?
Supported transmission rates are 1,200, 2,400, 4,800, 9,600, 19,200, 28,800, 38,400, and 57,600 baud. Select a rate that matches the other devices on the serial network.
What addressing and parity options are available?
The module supports Modbus slave addresses from 1 through 247. Parity options are even, odd, or none, allowing the serial settings to be matched to the network configuration.
Does the module support two-wire or four-wire connections?
It supports both two-wire and four-wire communication wiring arrangements. The chosen arrangement must be compatible with the Modbus master's RS485 interface and the network wiring.
What status indicators are provided?
Two local LED indicators are provided: one for power-on status and one for communication status.
What are the enclosure protection ratings?
The front panel is rated IP40, while the terminal block is rated IP20. These ratings apply to the stated areas of the module, rather than to a sealed enclosure.
How much does the module weigh?
The specified net weight is 0.11 kg, approximately 0.24 lb.
What storage temperature range is specified?
The specified ambient storage temperature range is -40°F to 158°F (-40°C to 70°C).
- Connecting compatible 24 V DC Zelio Logic SR3 smart relays to Modbus serial networks.
- Exchanging operating data between local automation equipment and a supervisory PLC over RS485.
- Linking compatible smart relays to Modbus-capable operator panels for equipment status monitoring.
- Integrating pump and ventilation control systems into centralized monitoring networks.
- Sharing conveyor and material-handling equipment status with higher-level control systems.
- Bringing distributed building automation equipment onto a common Modbus network.
- Adding serial communication capabilities to existing installations using compatible Zelio Logic SR3 smart relays.
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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Customer reviews
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