Product Introduction
When signal degradation threatens long-distance coupling between distributed control racks, the Siemens 6ES7461-3AA01-0AA0 provides a proven solution. This SIMATIC S7-400 interface module receiver IM 461-3 is engineered for reliable communication across distances up to 102 meters using the C-bus architecture. As a dedicated receiver module, it ensures data integrity and synchronized operation between remote I/O stations and the central controller.
Technical Specifications Breakdown
The Siemens 6ES7461-3AA01-0AA0 draws a maximum of 620 mA from the 5 V DC backplane bus, reflecting moderate power consumption suitable for dense S7-400 racks. Its power loss is rated at 3,100 mW, indicating efficient thermal performance during sustained operation. The maximum cable length between the first and last interface module reaches 102.25 meters, enabling flexible plant layouts without signal repeaters. For physical termination, the module requires a dedicated termination plug (order number 6ES7461-3AA0-7AA1). With compact dimensions (25 mm width, 290 mm height, 280 mm depth) and a weight of approximately 620 g, the module integrates seamlessly into standard S7-400 mounting rails.
Industry Applications
In a typical automotive assembly line, the Siemens 6ES7461-3AA01-0AA0 connects a remote I/O cabinet 80 meters from the main PLC rack, ensuring real-time sensor data reaches the controller without latency. In a water treatment plant, this receiver module links distributed pump stations to the central S7-400 system, maintaining synchronized control over flow and pressure. These scenarios benefit directly from the module's ability to handle long cable runs without signal errors, reducing downtime and data corruption risks.
Installation & Setup Guidance
Mount the Siemens 6ES7461-3AA01-0AA0 onto a standard S7-400 rack, ensuring that the backplane bus connector aligns correctly. Use the specified termination plug (6ES7461-3AA0-7AA1) at the end of the C-bus segment to prevent signal reflections. When routing cables between modules, maintain a separation from high-voltage lines to minimize electromagnetic interference. Verify that the total cable length does not exceed 102.25 meters. The module's slim 25 mm width allows for dense packing, but allow adequate airflow for heat dissipation.
Selection Guide & Purchasing Advice
Before ordering, confirm that your S7-400 rack supports the receiver IM 461-3 and that the C-bus function is required for your distributed topology. The Siemens 6ES7461-3AA01-0AA0 is a receiver-only module; you will need a matching sender (IM 461-1 or similar) at the master side. For reliable sourcing of this critical component, trust PLC Source PRO (ubest101) for authentic Siemens inventory and fast fulfillment. Verify your configuration to avoid compatibility issues with existing S7-400 backplanes.