ABB TU847Z 3BSE022462R1 termination unit module

Product Description

The TU847Z (3BSE022462R1) is a high-durability Module Termination Unit (MTU) specifically designed for redundant CI840/CI840A PROFIBUS DP-V1 communication interfaces. This "Z" variant features a G3-compliant conformal coating, providing superior resistance against corrosive gases and harsh environmental contaminants. As a passive backbone for the S800 I/O system, the TU847Z enables seamless dual-module redundancy, ensuring that field communications remain uninterrupted even during individual module failures.

Technical Specifications

• Model/Part Number: TU847Z (3BSE022462R1)

• Environmental Rating: G3 Compliant (Conformal Coated)

• Protocol Support: PROFIBUS DP-V1

• Input Voltage: 24 V DC (Operational range 19.2 to 30 V)

• ModuleBus Distribution: Max 5 V / 1.5 A and 24 V / 1.5 A

• Physical Interfaces: 2x DSUB9 (PROFIBUS), 2x RJ45 (Service Ports)

• Wiring Compatibility: 0.25 to 2.5 mm² (24 to 14 AWG)

• Station Addressing: Dual rotary switches (Range 0 to 99)

• Isolation Voltage: 50 V Rated / 500 V AC Dielectric Test

• Operating Temperature: 0°C to +55°C

• Protection Class: IP20

• Certifications: CE, UL, cULus, ATEX, IECEx, ABS, BV, DNV-GL, LR

Key Engineering Features

The TU847Z (3BSE022462R1) integrates several critical design elements for mission-critical industrial networks:

• Enhanced Chemical Resistance: The G3-standard coating makes this unit ideal for wastewater treatment, oil and gas, and chemical processing plants where atmospheric corrosion is a risk.

• Redundancy Management: Supports two CI840/CI840A modules simultaneously, providing a robust physical layer for redundant fieldbus architectures.

• Optical Expansion Capability: Includes a dedicated connector for the TB842 ModuleBus Optical Port, allowing the I/O station to be extended via fiber optics for long-distance communication.

• Advanced Error Prevention: Features 36-position mechanical keying (4 keys total) to ensure only authorized module types are inserted, protecting the station from electrical mismatch.

• Secure Installation: A specialized latching mechanism provides both a firm lock to the DIN rail and a reliable grounding path, essential for high EMC performance.