1756-M03SE | Allen Bradley ControlLogix 3-Axis SERCOS Interface Motion Module

Technical Overview

The 1756-M03SE  is a high-performance motion control module designed for the ControlLogix chassis. It serves as a digital link between Logix5000 controllers and SERCOS (Serial Real-time Communication System) compatible drives. By utilizing fiber-optic connectivity, the 1756-M03SE eliminates complex analog wiring, significantly reducing electrical noise interference and enhancing system reliability in multi-axis synchronized motion applications.

This module supports position, velocity, and torque control modes, providing the flexibility required for sophisticated robotic, packaging, and material handling systems. The 1756-M03SE allows for seamless integration with Kinetix and Ultra3000 drive families, ensuring high-speed data exchange and precise synchronization across up to three physical axes per module.

Detailed Specifications

• Module Function 3-Axis SERCOS Interface

• Maximum Axes per Module 3 Axes

• Compatible Drive Families Kinetix 2000, Kinetix 6000, Kinetix 7000, and Ultra3000 SERCOS

• Data Transmission Rates 4 Mbps or 8 Mbps

• SERCOS Cycle Timing (4 Mbps) 0.5 ms (up to 2 drives), 1 ms (up to 4 drives), 2 ms (up to 8 drives)

• SERCOS Cycle Timing (8 Mbps) 0.5 ms (up to 4 drives), 1 ms (up to 8 drives), 2 ms (up to 16 drives)

• Backplane Current (5.1V DC) 760 mA

• Backplane Current (24V DC) 2.5 mA

• Power Dissipation 5.0 Watts

• Thermal Dissipation 21.2 BTU/hr

• Isolation Voltage 50V Continuous

• Fiber Optic Support Plastic (2090-SCEP, SCVP, SCNP) or Glass (2090-SCVG)

• Operating Control Modes Position, Velocity, and Torque loop

• Module Location Any available slot in a ControlLogix chassis

Compatibility and Networking

The 1756-M03SE is engineered to work within the integrated motion on EtherNet/IP or SERCOS framework. While this specific module utilizes the SERCOS interface, it remains fully compatible with various ControlLogix controllers through the Studio 5000 Logix Designer environment. It is often compared to the 1756-M08SE (8-axis) or 1756-M16SE (16-axis) modules, offering a cost-effective solution for smaller 3-axis machinery or independent station control.

Technical FAQ

What type of fiber optic cable should be used with this module?The 1756-M03SE  supports both plastic and glass fiber optics. Plastic is typically used for shorter runs within a cabinet, while glass fiber is preferred for longer distances or environments requiring higher durability.

Can I mix different drive models on a single 1756-M03SE ring?Yes, you can mix compatible Kinetix 6000 and Ultra3000 drives on the same SERCOS ring, provided the cycle time and data rate are configured to accommodate the requirements of all connected nodes.

How does the SERCOS cycle time affect performance?Lower cycle times (e.g., 0.5 ms) provide higher precision and faster response for high-speed dynamic applications. However, reducing the cycle time limits the total number of drives that can be supported on a single module.