6ES7461-0AA01-0AA0 S7-400 Receiver Interface Module | Central Coupling IM461

Product Overview

• Siemens 6ES7461-0AA01-0AA0 – IM 461-0 receiver interface module for S7-400
  • Designed for central coupling without power supply transfer
  • Includes C‑bus connection for communication
  • Connects to IM 460‑0 transmitter module via cable
  • Supports up to 5 meters between modules

Key Technical Specifications

• Brand & Model
  • Brand: Siemens
  • Model: 6ES7461-0AA01-0AA0
  • Series: SIMATIC S7-400
  • Product Type: IM 461-0 Interface Module (Receiver)
• Electrical Data
  • Backplane bus current: max 290 mA at 5 V DC
  • Power loss: max 1.45 W (1450 mW)
• Hardware Configuration
  • Max cable length: 5 meters between first and last module
  • Requires termination plug: 6ES7461-0AA0-7AA1
• Physical Details
  • Width: 25 mm
  • Height: 290 mm
  • Depth: 280 mm
  • Weight: approx. 610 g
• Features
  • Central coupling without power supply transfer
  • Includes C‑bus for internal communication

Expert Review

• Field Engineer’s Insight: The IM 461-0 works as a receiver for S7-400 central coupling. Use it with the IM 460-0 transmitter module to extend racks. The 5‑meter cable limit is important – exceeding this causes signal degradation. This module does not transfer power, so each rack needs its own power supply. The C‑bus allows communication between CPUs in multi‑rack systems. I recommend this module for distributed I/O configurations where you need remote racks but don’t need power transmission. Always terminate the last module with the proper plug (6ES7461-0AA0-7AA1).

Compatibility & Applications

• Compatible Systems
  • Siemens SIMATIC S7-400 PLC systems
  • Works with IM 460-0 transmitter module
  • Fits S7-400 racks (UR1, UR2, CR2, ER1, ER2)
  • Requires termination plug for end-of-line
• Suitable Applications
  • Multi‑rack S7-400 configurations
  • Distributed I/O in large control cabinets
  • Central coupling for CPU-to-CPU communication
  • Expansion beyond the local rack limits

Installation & Maintenance Tips

• Keep cable length between racks under 5 meters for reliable operation.
• Install the termination plug on the last IM 461-0 in the chain.
• Each remote rack requires its own power supply module.
• Secure cables to prevent accidental disconnection.
• Check the C‑bus connection for proper CPU communication.

Package Contents

• 1x Siemens 6ES7461-0AA01-0AA0 IM 461-0 interface module
• Shipping: 12-24 hour dispatch via FedEx, UPS, or DHL

Compare with Similar Models

• 6ES7461-0AA01-0AA0 – IM 461-0, receiver, no power transfer
• 6ES7461-0AA01-0AA0 – Same module with termination plug option
• 6ES7461-0BA01-0AA0 – IM 461-0 with power supply transfer
• 6ES7460-0AA01-0AA0 – IM 460-0 transmitter module

Frequently Asked Questions

• Q: What does “without power supply transfer” mean?
  • A: The module does not send 5V power to the remote rack. Each remote rack needs its own power supply module.
• Q: What cable connects IM 460 to IM 461?
  • A: Use the Siemens connecting cable (order separately). Max length is 5 meters.
• Q: Do I need a termination plug for this module?
  • A: Yes, if this is the last module in the chain. Use part number 6ES7461-0AA0-7AA1.
• Q: Can I connect more than two racks with this module?
  • A: Yes. Chain multiple IM 461-0 modules. Total cable length between first and last cannot exceed 5 meters.
• Q: What is the C‑bus used for?
  • A: The C‑bus enables communication between CPUs in multi‑CPU configurations. It supports internal data exchange.

Selection Guide

• Choose 6ES7461-0AA01-0AA0 for remote racks without power transfer.
• Need power transfer? Select 6ES7461-0BA01-0AA0 instead.
• For the transmitter side, use 6ES7460-0AA01-0AA0.
• Warranty: 12 months against manufacturing defects.

Contact & Support

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825
• Technical support available in English and Chinese

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