DSRF182AK02
DSRF182AK02
DSRF182AK02

ABB 3BSE014078R1 DSRF182AK02 | Safety System Analog Input

  • Brand:​ ABB (formerly Triconex)
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    Model:​ DSRF182AK02 (Order Code: 3BSE014078R1)
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    Product Type:​ Analog Input Module
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    Series:​ Triconex Safety Instrumented System
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    Core Function:​ Provides 8 channels of 4-20mA analog input signal conditioning with Triple Modular Redundant (TMR) architecture for safety instrumented systems.
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    Key Specs:​ 8 channels, 4-20mA input, TMR design, HART communication support.
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Manufacturer:
Part number: ABB DSRF182AK02 3BSE014078R1
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Description

DSRF182AK02: Product Overview
The DSRF182AK02 is an 8-channel analog input module designed for ABB’s Triconex Safety Instrumented System (SIS) platform. This module serves as the critical interface between field instrumentation and the triple modular redundant (TMR) safety controller in high-reliability applications. Installed in a Triconex chassis, its primary function is to accept 4-20mA signals from field transmitters measuring process variables such as pressure, level, flow, and temperature, and convert these analog signals into digital values for processing by the TMR system. The module’s design incorporates three independent input circuits per channel that are constantly compared by the main processor to detect any discrepancies.
A key differentiator of this safety-rated analog input module is its integrated support for the HART protocol, enabling digital communication with smart field devices while simultaneously processing the analog 4-20mA signal. The module’s TMR architecture ensures that no single point of failure can cause a dangerous undetected fault, making it suitable for Safety Integrity Level (SIL) 3 applications as defined by international standards such as IEC 61508 and IEC 61511.

DSRF182AK02

DSRF182AK02

DSRF182AK02: Technical Specifications
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    Model Number:​ DSRF182AK02
  • ••
    Order Number:​ 3BSE014078R1
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    Manufacturer:​ ABB (Triconex)
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    Product Type:​ 8-Channel Analog Input Module
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    Input Channels:​ 8 channels, configurable per channel
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    Input Signal:​ 4-20mA (with HART communication support)
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    Architecture:​ Triple Modular Redundant (TMR)
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    Resolution:​ 16-bit
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    Accuracy:​ ±0.1% of full scale
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    Update Time:​ 100 ms per channel (maximum)
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    Isolation:​ Channel-to-channel and channel-to-system isolation
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    HART Support:​ Integrated HART modem per channel
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    Power Supply:​ 5VDC from Triconex backplane
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    Operating Temperature:​ 0°C to 60°C (32°F to 140°F)
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    Safety Certification:​ SIL 3 capable (IEC 61508)

    DSRF182AK02

    DSRF182AK02

Core Features & Customer Value
The Triple Modular Redundant architecture provides the highest level of safety and availability for critical process applications. Each channel contains three independent input circuits that are voted on by the main processor. This design allows the system to continue operation even if one circuit fails, while immediately alerting operators to the need for maintenance. For safety engineers, this means achieving the required Safety Integrity Level (SIL 3) for the most demanding applications while maintaining process availability.
Integrated HART protocol support enables advanced device management and diagnostics without compromising safety functions. Maintenance personnel can communicate with HART-enabled field devices for configuration, calibration, and diagnostic purposes while the safety system continues to monitor the primary 4-20mA safety signal. This capability supports predictive maintenance strategies by allowing technicians to monitor device health and performance trends, potentially identifying issues before they affect safety system reliability.
The high channel density (8 channels per module) optimizes cabinet space while maintaining complete channel-to-channel isolation. This isolation prevents ground loops and ensures that a fault on one channel does not affect adjacent channels. The module’s hot-swappable capability allows for maintenance and replacement without system shutdown, significantly reducing downtime costs during maintenance operations.
Typical Applications
In offshore oil and gas production platforms, the DSRF182AK02 is used in Emergency Shutdown Systems (ESD) to monitor critical process variables such as separator pressure, compressor discharge temperature, and gas detection levels. The TMR architecture ensures that even with a component failure, the safety system remains operational to initiate shutdown sequences when required conditions are met.
In chemical processing facilities handling hazardous materials, this module interfaces with safety-rated transmitters to monitor reactor temperatures and pressures. The HART capability allows for online verification of transmitter health and performance, supporting the proof testing requirements of the safety instrumented function while minimizing process interruptions for manual testing.

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