ABB TU848 3BSE042558R1 Module Termination Unit

Description

Technical Specifications

• Part Number: 3BSE042558R1
• Type: Redundant Module Termination Unit for TB840/TB840A
• Mounting: Vertical or horizontal DIN‑rail mounting with latching mechanism
• Power Supply: Dual 24 V DC input (19.2 V – 30 V DC)
• Communication Interfaces:
  • Dual electrical ModuleBus connections (A/B)
  • Dual slots for TB840/TB840A Optical ModuleBus Modems
• Addressing: Rotary switch for cluster address setting (1 – 7)
• Mechanical Keying: Two mechanical keys with six positions each, providing 36 unique configurations
• ModuleBus Current: Max. 5 V @ 1.5 A; Max. 24 V @ 1.5 A
• Dimensions: 47 mm (W) × 186.5 mm (H) × 124 mm (D)
• Weight: Approx. 0.5 kg (1.1 lbs)
• Operating Temperature:
  • Horizontal: 0°C to +55°C
  • Vertical: 0°C to +40°C
• Storage Temperature: -25°C to +70°C
• Humidity: 5% – 95% non‑condensingeero
• Protection Rating: IP20
• Equipment Class: Class I (earth‑protected) per IEC 60536
• Certifications: CE marked
• Compatible Modules: TB840, TB840A Optical ModuleBus Modems

Key Features

• Full Redundancy for Optical Communication: Delivers dual power, dual ModuleBus, and dual modem slots, eliminating single points of failure for optical communication links.
• Mechanical Keying System: Prevents incorrect module insertion; configurable via screwdriver for 36 distinct setups to match specific module types.
• Cluster Addressing: Integrated rotary switch simplifies network configuration by setting the cluster address (1–7) for the redundant modem pair.
• Flexible Mounting: Supports both vertical and horizontal DIN‑rail installation to optimize cabinet space utilization.
• Secure Installation: Built‑in latching mechanism ensures stable mounting and reliable electrical grounding.
• Passive Design: Contains no active electronic components, minimizing maintenance requirements and potential failure points.
• Robust Environmental Performance: Operates reliably across a wide temperature range and in high‑humidity industrial environments.
• Simplified Wiring: Clearly labeled terminal blocks and dedicated connections streamline field wiring and system commissioning.
• Hot‑Swap Support: Enables replacement of TB840/TB840A modules without complete system shutdown, reducing downtimeABB.

Application Scenarios

• Process Automation & DCS: Core component in ABB Advant 800xA and AC800M systems for oil & gas, refining, chemical, and pharmaceutical plants requiring redundant optical ModuleBus communicationABB.
• Power Generation & Distribution: Deployed in turbine control, boiler management, and grid automation systems for reliable optical I/O termination in power plants.
• Water & Wastewater: Integrated into SCADA and process control systems for water treatment facilities, ensuring continuous operation of critical pumps, valves, and monitoring instruments.
• Manufacturing & Heavy Industry: Used in automotive, metal, and machinery production lines for high‑availability optical signal termination in PLC‑based control systems.
• Marine & Offshore: Suitable for shipboard and offshore platforms where redundant, durable optical communication is essential in harsh marine environments.
• Wind Energy & Renewable Power: Applied in wind turbine control systems for reliable, long‑distance optical communication between nacelle and control room.
• Industrial Infrastructure: Utilized in intelligent building management, fire safety systems, and critical infrastructure control requiring uninterrupted optical data transmission.