SERCOS Interface Module 1756-M08SE | Allen-Bradley 8-Axis

Allen-Bradley ControlLogix 8-Axis SERCOS Interface Module 1756-M08SE

The Allen-Bradley 1756-M08SE is a SERCOS interface module for the ControlLogix platform. It connects the controller to up to eight servo drives via high-speed fiber optic communication. This module enables precise position, velocity, and torque control for integrated motion applications.

Core Specifications

• Brand & Model: Allen-Bradley 1756-M08SE
• Series: ControlLogix SERCOS Interface Module
• Axes Capacity: Up to 8 Drives per Module
• SERCOS Data Rate: 4 Mbps or 8 Mbps Selectable
• Control Modes: Position, Velocity, Torque
• Backplane Current: 760 mA @ 5V DC, 2.5 mA @ 24V DC
• Power Dissipation: 5.0 Watts (21.2 BTU/hour)
• Isolation Voltage: 50V Continuous

Key Features

• High-Speed SERCOS Interface: Provides deterministic, noise-immune communication via fiber optic cables.
• Multi-Drive Support: Interfaces with Kinetix 2000, 6000, 7000, and Ultra3000 SERCOS servo drives.
• Flexible Cycle Times: Configurable update rates (e.g., 1 ms for up to 8 axes at 8 Mbps).
• Seamless Integration: Installs directly into 1756 ControlLogix chassis (A4, A7, A10, A13, A17).
• Simplified Wiring: Eliminates complex point-to-point wiring with a single fiber optic ring.

Performance & Compatibility

• SERCOS Cycle Time @ 4 Mbps: 0.5 ms (up to 2 drives), 1 ms (up to 4), 2 ms (up to 8).
• SERCOS Cycle Time @ 8 Mbps: 0.5 ms (up to 4 drives), 1 ms (up to 8), 2 ms (up to 16).
• Compatible Cables: Plastic or Glass Fiber Optic (e.g., 2090-SCEPxx, 2090-SCVGxx).
• Power Supplies: Works with standard (e.g., 1756-PA75) and redundant (e.g., 1756-PA75R) supplies.
• Max Axes per Controller: Supports up to 32 axes total across multiple modules.

Physical & Environmental

• Operating Temperature: 0° to 60°C (32° to 140°F)
• Storage Temperature: -40° to 85°C (-40° to 185°F)
• Relative Humidity: 5% to 95% non-condensing
• Vibration: 2g @ 10-500 Hz
• Shock: 30g operating, 50g non-operating
• Enclosure: None (for chassis mounting)

Packaging & Shipping

• One Allen-Bradley 1756-M08SE SERCOS interface module.
• Factory-secured packaging.
• Shipped via FedEx, UPS, or DHL.

FAQ

• What is SERCOS communication?
  SERCOS (Serial Real-time Communication System) is a digital fiber optic interface standard for high-performance motion control between controllers and drives.
• Can I mix different Kinetix drives on one module?
  Yes, the module is compatible with various Kinetix drive series, but all must support the SERCOS interface.
• How is the module configured?
  It is configured using Rockwell Automation's Studio 5000 Logix Designer software within your ControlLogix project.