ABB 3BSC950193R1 TB850 CEX-Bus Terminator

ABB 3BSC950193R1 TB850 CEX-Bus Terminator Technical Overview

1. Product Description

The ABB 3BSC950193R1 TB850 is a CEX-Bus Terminator module designed for use in ABB's AC 800M high-availability control systems. It serves as a critical termination component for the CEX (Controller Extension) bus, ensuring signal integrity and proper communication in redundant controller configurations.

2. Key Features

Redundant System Support: Ensures stable communication in redundant AC 800M controller setups.

Signal Integrity: Prevents signal reflections and noise interference on the CEX bus.

Hot-Swappable: Allows replacement without system shutdown (if used in a redundant configuration).

LED Indicators: Provides visual status monitoring of bus activity and termination status.

Robust Design: Industrial-grade construction for reliable operation in harsh environments.

3. Applications

Process Automation: Used in ABB’s 800xA and Advant OCS control systems.

Power Generation & Distribution: Ensures high availability in critical power plant control systems.

Oil & Gas, Chemical Plants: Supports fault-tolerant control architectures.

4. Installation & Compatibility

Compatible with:

AC 800M controllers (e.g., PM851, PM861, PM865).

CEX bus modules (e.g., CI854, CI855).

Mounting: Installed at the end of the CEX bus chain (daisy-chain topology).

Wiring: Requires proper termination resistance (typically 120Ω for CEX bus).

5. Technical Specifications

Operating Voltage: 24V DC (supplied via CEX bus).

Temperature Range: -25°C to +70°C (industrial standard).

Certifications: Complies with IEC 61131-2, UL 508, and CE standards.

6. Troubleshooting & Maintenance

Common Issues:

Bus communication failure: Verify termination resistance and cable integrity.

LED status errors: Check power supply and module seating.

Replacement: Must match the original part number (3BSC950193R1) for compatibility.

7. Ordering & Documentation

ABB Part No.: 3BSC950193R1 (TB850 CEX-Bus Terminator).

Reference Manual: Consult "3BSE050091R5101 CEX-Bus Installation Guide" for detailed wiring and setup.

Note: For system-critical applications, always verify compatibility with your specific ABB controller setup. Contact ABB Technical Support for configuration assistance.