6ES7461-0AA00-7AA0 SIMATIC S7-400 Terminating Connector for IM 461-0

Product Brief – Terminating Connector for IM 461-0

6ES7461-0AA00-7AA0 is a dedicated terminating connector for the SIMATIC S7-400 receiver IM 461-0. This accessory ensures proper bus termination and signal integrity in complex automation racks. It is a lightweight (80 g) and essential component for reliable S7-400 communication.

Oiltech Controls’s Insight

• Application focus: Use this connector to terminate the last IM 461-0 in a distributed I/O chain. Without it, bus errors or communication dropouts may occur.
• Technical tip: Always check that the terminating resistor is enabled via the IM 461-0 switch when this connector is fitted.
• Compatibility note: This connector is not interchangeable with standard Profibus terminators. It is specifically keyed for the S7-400 receiver interface.
• Lifecycle: As a genuine Siemens accessory, it guarantees long-term reliability in 24/7 plant operations.

Technical Specifications

• Brand: Siemens
• Model: 6ES7461-0AA00-7AA0
• Type: Terminating connector
• Product family: SIMATIC S7-400
• Associated device: Receiver IM 461-0
• Function: Bus termination for RS-485 segment
• Weight: approx. 80 g
• Dimensions: Compact design, fits directly on IM 461-0

Compatible Devices & Systems

• Primary: SIMATIC S7-400 with IM 461-0 interface module
• Systems: S7-400H, redundant systems, and distributed configurations
• Applications: Terminates the last station in a Profibus DP segment
• Note: Not compatible with IM 460 or IM 467 interfaces

Why Buy From Oiltech Controls?

• 15+ years of focused expertise in industrial automation spares.
• Worldwide shipping – via FedEx, UPS, or DHL with tracking.
• Tested surplus and refurbished options, fully verified.
• 12-month warranty on all products for peace of mind.
• Pre-shipment verification by our technical team.
• We support obsolete and legacy control systems.

Professional FAQ – Expert Buying Guide

• Q1: Is this connector required for every IM 461-0?
  A: No. Only the last IM 461-0 on a bus segment needs termination. Using it on middle stations can cause signal reflection and errors.
• Q2: What happens if I use a standard Profibus terminator?
  A: Physical fit may differ, and electrical characteristics are not identical. We recommend using this dedicated Siemens connector for guaranteed performance.
• Q3: How do I verify correct termination?
  A: After installation, check the IM 461-0’s “Term” LED. A steady green light indicates proper termination. Also monitor communication errors in the CPU diagnostics buffer.
• Q4: Can I use this with redundant S7-400H systems?
  A: Yes, but ensure both sub-racks are terminated correctly. For redundant CPU operation, place terminators on both IM 461-0 modules at the far ends.
• Q5: What is the typical shelf life, and do you test old stock?
  A: This passive component is highly durable. We test all surplus units for pin integrity and mechanical fit before shipment, as physical damage is the main failure mode.

Shipping & Warranty

• Dispatch: 24-28 hours after order confirmation.
• Carriers: FedEx, UPS, DHL – choose your preferred option.
• Warranty: 12 months covering functional defects.
• All shipments include tracking and insurance.

Contact Information
Email: info@oiltechcontrols.com
WhatsApp: +86 158 8020 0923

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