TM5NS31 Schneider Electric SERCOS III Module – Modicon TM5 Series

Product Overview

• TM5NS31 – SERCOS III field bus interface module by Schneider Electric.
  • Part of the Modicon TM5 series.
  • Designed for high‑speed motion control communication.
  • Physical interface: 2 RJ45 connectors (Ethernet/IP and SERCOS).
• Works with Modicon LMC078 motion controllers.
• White housing, very light (0.03 kg), and compact.

Key Technical Data

• Communication
  • Protocol: SERCOS III (100 Mbit/s).
  • Ethernet/IP support for additional connectivity.
  • 2 RJ45 ports for daisy‑chain or ring topology.
• Power & Consumption
  • Powered via 5 V DC base (bus).
  • Power dissipation: max 1.75 W.
• Local Indicators (LEDs)
  • STAT (green/red): module status.
  • SERCOS III (green/red): network status.
  • Port 1 & Port 2 (green): link/activity.

Environmental & EMC

• Immunity
  • ESD: 4 kV contact / 8 kV air (EN/IEC 61000‑4‑2).
  • Radiated field: 10 V/m (80 MHz – 2 GHz).
  • Fast transients: 2 kV (power), 1 kV (I/O & shielded cable).
  • Surge: 1 kV common mode, 0.5 kV differential.
• Compliance
  • EMC: EN/IEC 61000‑4‑6.
  • Radiated/conducted emission: CISPR 11.
• Green Premium – sustainable product.

Compatibility & Installation

• Controllers: Modicon LMC078 (motion controller).
• Required parts (ordered separately):
  • Bus base.
  • Power supply.
  • Terminal block.
• Mounting: standard DIN rail (horizontal/vertical).
• Cable: shielded Ethernet cables (Cat5e or higher).

Expert Review

• Manager’s Insight: “A must‑have for high‑speed motion networks. The TM5NS31 delivers stable SERCOS III communication with minimal latency. Easy to set up and the LED diagnostics help a lot. Perfect for multi‑axis synchronization.”

Applications

• Multi‑axis motion control (robotics, CNC).
• Packaging machines with high‑speed indexing.
• Printing and converting lines.
• Any system requiring real‑time SERCOS III network.

Comparison with Similar Models

• TM5NS31 vs TM5NS32 (PROFINET, not SERCOS).
• vs TM5NSE8 (EtherNet/IP adapter, no motion).
• vs TM5SBET1 (bus transmitter, not fieldbus).
• For detailed specs, visit our comparison page.

FAQ – Frequently Asked Questions

• Which controllers work with TM5NS31?

  Only Modicon LMC078 is officially supported.

• Do I need a separate power supply for this module?

  Yes, a 5 V DC bus base and power supply are required (not included).

• What is the maximum cable length?

  Use standard Ethernet cables up to 100 m between nodes.

• Can I use this module without a motion controller?

  No, it is designed specifically for LMC078 motion systems.

• Does it support EtherNet/IP?

  Yes, it has an EtherNet/IP port for additional device communication.

• What is the warranty period?

  12 months from the invoice date.

• Shipping methods?

  FedEx, UPS, or DHL – you can choose at checkout.

• Is the module hot‑swappable?

  No, power off the system before removing or inserting.

Selection Guide

• For SERCOS III motion networks → choose TM5NS31.
• Need EtherNet/IP only? Look at TM5NSE8.
• For PROFINET, use TM5NS32 (different model).
• Always order the bus base and power supply separately.

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