TB867 | -40 °C to +85 °C | communication module

Description

Product Overview

The ABB TB867 is a high-performance synchronization and communication module for the AC 800M High Integrity (HI) and AC 800M Safety controller families, designed specifically to manage redundancy and high-speed data exchange. Functioning as the critical link between a primary and standby controller in a 1-out-of-2 redundant pair, the ABB TB867 ensures deterministic synchronization and enables bumpless, lossless switchover in mission-critical applications. It facilitates the real-time mirroring of the entire application memory, process data, and timing signals, guaranteeing that the standby unit is a perfect, up-to-date replica. This module is engineered for maximum reliability and fault tolerance, forming the backbone of high-availability systems in ABB’s System 800xA, where unscheduled downtime is unacceptable and safety integrity levels (SIL) must be maintained. Its advanced diagnostics and robust communication protocol make it indispensable for safety and critical process control.

Parameter Values

• Product Model: ABB TB867
• Brand: ABB
• Warranty: One Year
• Supply Voltage: 24 V DC
• Operating Temperature: 0 °C to +60 °C
• Storage Temperature: -40 °C to +85 °C
• Synchronization Interface: Dedicated high-speed serial link via backplane and optional external fiber optic cable
• Synchronization Data Rate: 1 Gbps
• Redundancy Switchover Time: < 50 ms
• External Fiber Distance: Up to 1000 meters
• Protocol: ABB proprietary redundancy synchronization protocol
• Supported Controllers: AC 800M HI
• Power Consumption: 4.5 W
• Isolation: 1.5 kV
• Status Indication: Comprehensive LED status for power, sync link activity, and module health
• Dimensions:  (60 mm x 120 mm x 120 mm)

Key Functions

• Deterministic State Mirroring:  TB867 Maintains absolute, cycle-by-cycle synchronization of the application program, internal states, and I/O data between redundant controllers.
• Seamless Fault Recovery: Automatically detects failures in the primary controller and executes a controlled switchover to the standby, ensuring continuous process control with no data loss.
• Dual Communication Paths: Supports synchronization via the internal controller backplane and an optional external fiber optic link for physical separation or longer distances between controller racks.
• Continuous Diagnostics & Supervision:TB867  Monitors the health of both the local and peer controller, as well as the integrity of the synchronization link, providing detailed fault information to the engineering station.
• Safety Instrumented Systems (SIS): Essential for redundant AC 800M Safety controller configurations to achieve high Safety Integrity Levels (SIL 2/3) in Emergency Shutdown (ESD) and Fire & Gas (F&G) systems.

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