1756-M16SE | Allen-Bradley | ControlLogix 16-Axis SERCOS Interface Motion Module

Product Description

The 1756-M16SE is a high-performance motion control module designed for the Allen-Bradley ControlLogix platform, providing a specialized interface for SERCOS (Serial Real-time Communication System) fiber-optic networks. This module serves as a centralized controller for high-speed, synchronized motion, capable of managing up to 16 axes of independent or coordinated motion per module. By utilizing digital fiber-optic rings, it eliminates traditional analog noise issues and significantly simplifies field wiring to Kinetix or other SERCOS-enabled drives.

As a core component of high-order motion architectures, the 1756-M16SE (Part Number: 1756-M16SE) supports data rates of 4 or 8 Mbps, ensuring precise closed-loop control. It is designed for seamless integration into 1756 ControlLogix chassis, drawing power directly from the backplane while maintaining continuous 50V isolation to protect the logic circuitry from external electrical noise.

Technical Specifications

• Brand: Allen-Bradley

• Model Designation: 1756-M16SE

• Module Type: SERCOS interface motion module

• Axis Capacity: 16 axes per module (System supports up to 32 axes per controller)

• Communication Media: Plastic fiber-optic cable (2090-SCEP, 2090-SCVP, or 2090-SCNP)

• Data Transfer Rates: 4 Mbps or 8 Mbps

• Backplane Power Consumption: 760 mA @ 5.1V DC; 2.5 mA @ 24V DC

• Power Dissipation: 6.2 Watts

• Thermal Output: 21.2 BTU per hour

• Continuous Isolation Voltage: 50 Volts

• Chassis Compatibility: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17

• Standard Power Supplies: 1756-PA72, 1756-PA75, 1756-PB72, 1756-PB75

• Redundant Power Supplies: 1756-PA75R, 1756-PB75R, 1756-PSCA2

Applications and Motion Performance

This module is ideally suited for complex packaging machinery, robotic assembly cells, and high-speed material handling systems where precise synchronization between multiple axes is paramount. The SERCOS digital interface ensures that drive parameters can be configured and monitored directly through Studio 5000 Logix Designer software, reducing commissioning time and improving diagnostic visibility.

Engineering FAQ

What fiber-optic cables are recommended for the 1756-M16SE?The module is compatible with 2090-series plastic fiber-optic cables. For standard environments, the 2090-SCVP standard jacket is sufficient, while the 2090-SCNP nylon jacket is recommended for applications requiring higher chemical or abrasion resistance.

Can the 1756-M16SE be used in a remote I/O chassis?No, motion modules must reside in the local chassis with the Logix controller to maintain the high-speed timing required for motion group synchronization and task execution.