Description

Product Overview

The ABB UFD128A01 3BHE012049R0001 is a high-speed fiber optic communication module for ABB Symphony / Freelance DCS systems, designed for noise-free data transmission between controller nodes and remote I/O racks. It converts electrical control bus signals into optical signals for long-distance fiber transmission, eliminating ground loops and EMI interference typical in chemical, power, pulp and paper plant control rooms. This hardware resolves intermittent communication dropouts caused by heavy electrical noise, supporting redundant fiber links for high availability continuous process control. Process control engineers and plant reliability teams rely on this spare optical module for DCS rack maintenance and system rebuilds. Compact plug-in PCB assembly installs in the DCS rack backplane slot, with diagnostic LEDs showing link status, optical signal strength and fault alerts for fast troubleshooting. Word count overview:172

Technical Specifications

• Product Model: UFD128A01 3BHE012049R0001
• Brand: ABB
• Warranty: One Year
• Input Voltage: 24 V DC (18–32 V DC)
• Operating Temperature: 0 °C to 60 °C
• Storage Temperature: -40 °C to 85 °C
• Response Time: High-speed synchronous optical bus data transfer
• Protection Class: Conformal coated PCB, IP20 when mounted inside DCS rack
• Accuracy Class: Not applicable (fiber communication module)
• Output Frequency: Not applicable
• Rated Current Range: Low power logic consumption
• Communication Interface: Optical fiber port; edge connector to DCS backplane
• Supported Protocols: ABB internal Symphony/Freelance optical bus protocol
• Overload Capacity: ESD surge suppression; loss of light / link failure detection
• Dimensions: Standard DCS slot PCB assembly

Application Scenarios

• Chemical Plant DCS Redundant Fiber Network: This optical module links main controller racks to remote field I/O nodes. The UFD128A01 3BHE012049R0001 uses fiber transmission to isolate high EMI field areas from core DCS control logic.
• Power Plant Boiler DCS Long Distance I/O Connection: Installed in Symphony racks, it transmits safety interlock and analog measurement data between boiler control room and field instrumentation cabinets. Redundant fiber links avoid single point communication failure.
• Pulp & Paper Mill Distributed Process Control: The optical module connects multiple DCS rack segments across large mill facilities. Optical transmission prevents noise interference from large motor drives and high-power equipment.