ABB TB852 3BSC950263R1 Redundant Control Unit (RCU) Link Terminator

Description

The ABB TB852 is an RCU Link terminator for the AC 800M controller, ensuring correct impedance for high-speed synchronization between redundant PM861A or PM864A units. It prevents signal reflections, maintaining seamless bumpless transfer during controller failover.

Specifications

• Manufacturer: ABB

• Model Designation: TB852

• Part Number: 3BSC950263R1

• Product Type: RCU Link Terminator

• Compatibility: AC 800M Redundant Processor Pairs (PM861A, PM864A, PM866)

• Interface: Specialized RCU Link Port

• Function: Impedance Matching / End-of-line Termination

• Mounting: Direct plug-in to the RCU Link cable or module

• Weight: 0.02 kg

• Operating Temperature: +5 to +55°C

Features

• Redundancy Synchronization: Essential for the stable operation of redundant controller pairs, ensuring high-speed data mirroring remains error-free.

• Signal Quality Preservation: Actively suppresses electrical noise and signal "ringing" at the boundaries of the RCU communication link.

• Mandatory System Component: Required for all AC 800M configurations utilizing the RCU-Link to achieve High Availability (HA) status.

• Compact Plug-in Design: Small form factor allows for direct installation without interfering with surrounding controller wiring or I/O modules.

• Passive Reliability: Built as a high-precision passive resistor network, offering extreme durability and a long operational lifespan without power requirements.

• Gold-Plated Contacts: Features high-quality connector pins to ensure low contact resistance and protection against oxidation in industrial environments.