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ABB FI840F (Order Code: 3BSH000033R1) Fieldbus Module  

1. Key Parameters

• Product Model: FI840F
• Order Code/Part Number: 3BSH000033R1 (unique identifier for procurement and AC 800M compatibility verification)
• Product Series: AC 800M DCS Fieldbus Interface Modules
• Core Function: Acts as a FOUNDATION Fieldbus H1 master; enables bidirectional data communication between AC 800M controllers and FOUNDATION Fieldbus field devices; supports device configuration and diagnostics
• Fieldbus Compatibility:
  • Protocol: FOUNDATION Fieldbus H1 (compliant with IEC 61158-2, ISA 50.02)
  • Network Type: Twisted-pair bus (redundant/non-redundant configurations)
  • Data Rate: 31.25kbps (standard for FOUNDATION Fieldbus H1)
  • Power Provision: Integral Fieldbus Power Supply (FBP) – 24V DC input, 9~32V DC output to fieldbus (supports bus-powered devices)
• Communication Specifications:
  • Backplane Interface: ABB proprietary PRONETA bus (100Mbps full-duplex; seamless integration with AC 800M processors)
  • Maximum Fieldbus Segments: 2 independent H1 segments per module
  • Maximum Devices per Segment: 32 (including bus terminators; compliant with FOUNDATION Fieldbus limits)
  • Bus Length: Up to 1900m per segment (using standard twisted-pair cable; longer distances with repeaters)
  • Termination: Requires external 100Ω/0.1μF terminators at segment ends (not integrated)
• Electrical Specifications:
  • Power Supply (Backplane): 5V DC (from AC 800M rack; typical current: 1.2A)
  • Fieldbus Power Supply (FBP): 24V DC input (±10% tolerance); 1.2A maximum output current
  • Isolation: 500Vrms (between fieldbus segments and backplane; prevents ground loops)
• Mechanical Specifications:
  • Dimensions (W×H×D): 25mm × 100mm × 160mm (1-module width; fits AC 800M standard I/O racks)
  • Mounting: Rack-mounted (compatible with AC 800M rack enclosures)
  • Weight: Approximately 200g
  • LED Indicators:
    • Power (PWR): Green (module powered on)
    • Backplane (BUS): Green (PRONETA bus communication normal); Red (bus fault)
    • Fieldbus Segment 1 (H1-1): Green (segment active); Red (segment fault); Amber (segment warning)
    • Fieldbus Segment 2 (H1-2): Green (segment active); Red (segment fault); Amber (segment warning)
    • FBP Status (FBP): Green (fieldbus power normal); Red (FBP fault)
• Environmental Ratings:
  • Operating Temperature Range: -25℃~+70℃ (-13℉~158℉)
  • Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Humidity Tolerance: ≤95% RH (non-condensing, 40℃)
  • Vibration Resistance: 10~500Hz, 2g acceleration (IEC 60068-2-6; no communication loss)
  • Shock Resistance: 30g acceleration (11ms duration, IEC 60068-2-27; maintains functionality)
• Compliance Standards: IEC 61158-2 (FOUNDATION Fieldbus), IEC 61000-6-2 (EMC immunity), UL 508 (industrial safety), CE, FOUNDATION Fieldbus Certified

2. Key Features

• Dual Independent FOUNDATION Fieldbus H1 Segments: Supports 2 separate H1 segments, each with up to 32 devices—enabling flexible network segmentation (e.g., separating process areas or device types) and reducing single-point failures.
• Integral Fieldbus Power Supply (FBP): Eliminates the need for external power supplies by providing 9~32V DC to bus-powered field devices (e.g., smart pressure transmitters). The FBP includes overcurrent and short-circuit protection to safeguard both the module and field devices.
• Seamless AC 800M Integration: PRONETA bus interface enables plug-and-play connectivity with AC 800M processors (e.g., PM866K02, PM861AK02). Configuration and monitoring are managed via ABB’s Control Builder M software, with no custom drivers required.
• Advanced Device Diagnostics: Supports FOUNDATION Fieldbus’ built-in diagnostics (e.g., device health, sensor drift, communication errors). Fault data is transmitted to the AC 800M controller and can be visualized in HMIs, enabling predictive maintenance and reducing unplanned downtime.
• Redundant Network Support: Compatible with redundant FOUNDATION Fieldbus H1 configurations (e.g., dual segments, redundant terminators). If one segment fails, the module automatically switches to the backup, ensuring uninterrupted communication with critical field devices.
• Wide Environmental Adaptability: Withstands extreme temperatures (-25℃~+70℃), vibration, and humidity—reliable for harsh process environments like chemical plants, oil refineries, and power stations.
• FOUNDATION Fieldbus Certification: Meets strict FOUNDATION Fieldbus standards, ensuring interoperability with third-party FOUNDATION Fieldbus devices (e.g., Emerson Rosemount transmitters, Fisher control valves).

3. Application Fields

• Chemical & Petrochemical Industry: Connects AC 800M DCS to FOUNDATION Fieldbus smart devices (e.g., flow transmitters, level sensors, pH analyzers) in reactors, distillation columns, and storage tanks—enabling precise process control and compliance with safety standards.
• Power Generation: Integrates with FOUNDATION Fieldbus-compatible equipment in thermal, nuclear, and renewable energy plants (e.g., boiler temperature transmitters, turbine vibration sensors, solar inverter monitors)—supporting efficient energy production and grid stability.
• Oil & Gas Upstream/Downstream: Used in offshore drilling rigs, crude oil pipelines, and refineries to communicate with FOUNDATION Fieldbus devices (e.g., pressure transducers, flow meters, valve positioners)—withstanding salt spray, vibration, and extreme temperatures.
• Pharmaceutical Manufacturing: Links AC 800M systems to FOUNDATION Fieldbus process analyzers (e.g., HPLC, UV detectors) and control valves in batch processing lines—ensuring compliance with FDA/GMP regulations by maintaining precise control over critical parameters (e.g., temperature, pressure).
• Water & Wastewater Treatment: Connects to FOUNDATION Fieldbus smart pumps, dissolved oxygen sensors, and chemical dosing valves—optimizing treatment processes (e.g., aeration, filtration) and ensuring compliance with environmental discharge standards.
• Food & Beverage Production: Integrates with FOUNDATION Fieldbus temperature transmitters, fill-level sensors, and CIP (Clean-in-Place) system devices—maintaining product quality and food safety in pasteurization, fermentation, and packaging lines.

4. Precautions

• System Compatibility: Use exclusively with ABB AC 800M controllers and racks. Non-AC 800M systems will not recognize the PRONETA bus interface, leading to communication failures.
• Fieldbus Cable Compliance: Use only FOUNDATION Fieldbus-approved twisted-pair cable (2-wire, shielded, 18~22 AWG) compliant with IEC 61158-2. Non-compliant cables cause signal degradation, data errors, or device malfunctions.
• Termination Requirements: Install 100Ω/0.1μF terminators only at the ends of each H1 segment. Missing or mid-segment terminators disrupt signal flow and cause communication drops. For redundant segments, ensure both primary and backup segments have dedicated terminators.
• Grounding & Shielding: Ground the fieldbus cable shield at both ends (single-point grounding is not recommended for FOUNDATION Fieldbus) and connect the module’s ground terminal to the AC 800M rack’s common ground (≤1Ω resistance). This minimizes EMI interference and ground loops.
• FBP Load Management: Do not exceed the FBP’s 1.2A maximum output current. Calculate the total power draw of bus-powered devices per segment to avoid overloading—overcurrent triggers FBP shutdown, interrupting power to field devices.
• Firmware Updates: Update the module’s firmware via ABB’s Control Builder M software. Back up configuration data before updating—mismatched firmware between the module and AC 800M controller causes protocol errors.
• Environmental Protection: Install in a sealed, climate-controlled cabinet in corrosive or dusty environments. For outdoor applications (e.g., solar farms), use weatherproof enclosures to protect the module from moisture, temperature extremes, and UV radiation

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