Product Description

Overview

The TB852 (3BSC950263R1) is a high-performance optical link module engineered for ABB AC 800M controllers and S800 I/O systems. Designed as a Redundancy Link (R-Link), it provides secure, fiber-optic communication between I/O clusters or between CI810/CI820 Fieldbus interfaces. The device enables redundant communication paths, enhancing system reliability and process availability in industrial control applications.

Technical Specifications

Key Features

• Provides optical isolation to prevent electrical interference

• Enables redundant communication for high availability

• Compact design simplifies installation in control cabinets

• Industrial-grade construction supports harsh environments

• Integrated diagnostics via LED indicators for link monitoring

Applications

• Redundant AF100 communication setups between CI810/CI820 interfaces

• Fiber-optic extension of ModuleBus across separate cabinets or long distances

• Industrial automation requiring high reliability and EMI immunity

FAQ

Q: Can TB852 operate in outdoor or extreme temperature environments?
A: Standard operation is +5°C to +55°C. For extended ranges, consult ABB environmental specifications.

Q: Is the module plug-and-play?
A: Yes, it mounts directly onto standard DIN rails and automatically integrates with AC 800M systems.

Q: How does it ensure redundancy?
A: In R-Link configurations, the module switches communication to a secondary path if the primary link fails, maintaining uninterrupted control.

Q: Are there alternative modules for similar applications?
A: TB852 is specifically optimized for optical R-Link redundancy. For copper-based redundancy, refer to ABB TB850 series.