ABB D685A1156U01 Uni Type3 Backplane

Description

Technical Specifications

• Product Type: Universal Type 3 Backplane (with FET Housing)
• Compatible Systems: ABB AC 800F, AC 800M, AC 800PEC, System 800xA DCS
• Module Slots: 16 I/O module slots (supports digital, analog, and special function I/O modules)
• Communication Interface: 1 x CAN (Controller Area Network) bus interface for system communication
• Power Interface: 1 x dedicated 24 V DC power input port
• Power Supply: 24 V DC nominal, voltage range 18–32 V DC
• Power Current Capacity: Up to 5 A total for connected I/O modules
• Isolation Voltage: Galvanic isolation up to 500 V AC between field circuits and system
• Operating Temperature: -25 °C to +55 °C (full operational range)
• Storage Temperature: -40 °C to +85 °C
• Relative Humidity: 5% – 95% RH (non-condensing)
• Physical Dimensions: Circular form factor, standard diameter for ABB field housings
• Weight: Approximately 1.2 kg
• Protection Class: IP65 (when installed in dedicated field housing)
• Mounting: Integrates into ABB standard field instrument housings (FET/FEP type)
• Certifications: CE, UL, CSA, ATEX, IEC 61131-2, EMC compliant (EN 61000-6-2/4)
• Design: Circular PCB assembly with robust terminal blocks and bus connectors
• MTBF: High mean time between failures, designed for 24/7 continuous operation

Key Features & Benefits

1. Universal Compatibility & Multi-System Support
   • Fully compatible with ABB’s flagship control systems: AC 800F, AC 800M, AC 800PEC, and System 800xA.
   • Accommodates up to 16 I/O modules of various types (digital input/output, analog input/output, HART, pulse, and special function modules).
   • Supports seamless integration with both legacy and latest-generation ABB I/O modules, protecting system investment.
2. Robust Galvanic Isolation & Noise Immunity
   • Implements 500 V AC galvanic isolation between field wiring, I/O modules, and the controller system.
   • Effectively eliminates ground loops, electrical interference, and voltage transients common in industrial environments.
   • Ensures signal integrity and stable operation in high-electrical-noise environments such as power plants and heavy industry.
3. High-Speed & Reliable Communication Bus
   • Features an integrated CAN bus interface for deterministic, high-speed communication between the controller and I/O modules.
   • Supports real-time data exchange with minimal latency, essential for closed-loop process control.
   • Built-in bus redundancy and error checking ensure continuous communication even under fault conditions.
4. Hot-Swappable & Fault-Tolerant Design
   • Enables hot-swapping of I/O modules without powering down the entire system, reducing downtime during maintenance.
   • Supports individual module replacement while the system remains online, critical for continuous process industries.
   • Fault isolation design prevents a single faulty module from disrupting the entire backplane or other modules.
5. Industrial-Grade Durability
   • Operates reliably across an extended temperature range (-25 °C to +55 °C) and withstands high vibration and shock.
   • IP65 protection rating when installed in the proper housing, providing resistance to dust, dirt, and water ingress.
   • Designed for use in harsh field environments, including outdoor installations and hazardous locations.
6. Simplified Installation & Cable Management
   • Compact circular design fits perfectly into ABB’s standard field instrument housings for easy field mounting.
   • Clearly labeled terminal blocks and organized bus connections minimize wiring errors and simplify installation.
   • Optimized internal layout for efficient cable routing and reduced space requirements in control cabinets or field enclosures.
7. Comprehensive Safety & Compliance
   • Certified for use in ATEX Zone 2 hazardous areas, suitable for oil, gas, and chemical processing facilities.
   • Meets international safety standards (IEC 61131-2, UL 60950, CSA) and strict EMC directives.
   • Built-in overvoltage and overcurrent protection safeguards connected modules and the entire control system.

Application Scenarios

• Power Generation & Transmission
  • Integrates I/O modules for turbine control, boiler safety systems, and switchgear monitoring in thermal, hydro, and nuclear power plants.
  • Connects field instruments to control systems in high-voltage substations and renewable energy farms (wind, solar).
  • Ensures reliable operation in outdoor and harsh power plant environments with high electrical noise.
• Oil & Gas Industry
  • Used in offshore platforms, onshore drilling rigs, refineries, and pipeline compressor stations.
  • Supports I/O modules for wellhead control, emergency shutdown (ESD) systems, and process monitoring.
  • ATEX certification enables safe deployment in explosive gas atmospheres (Zone 2).
• Chemical & Petrochemical Processing
  • Provides distributed I/O connectivity for reactor control, distillation columns, and material handling systems.
  • Connects pressure, temperature, flow, and level transmitters to DCS controllers in continuous process plants.
  • Ensures stable operation in corrosive and high-temperature chemical plant environments.
• Water & Wastewater Treatment
  • Deployed in pump stations, filter plants, and sewage treatment facilities for distributed control.
  • Connects I/O modules for valve actuators, flow meters, and water quality analyzers.
  • IP65 protection withstands damp, humid, and occasionally wet environments.
• Metals & Mining
  • Used in mineral processing plants, smelters, and rolling mills for heavy industrial automation.
  • Supports I/O modules for crushing, grinding, and material handling equipment control.
  • Resists high dust, vibration, and extreme temperatures in mining and metal production facilities.
• Marine & Offshore Applications
  • Installed on commercial vessels, offshore rigs, and floating production storage and offloading (FPSO) units.
  • Provides reliable I/O connectivity for ship automation, dynamic positioning, and process control systems.
  • Withstands salt spray, humidity, and constant vibration typical of marine environments.
• Cement & Building Materials
  • Integrates I/O modules for kiln control, raw material handling, and packaging lines.
  • Operates reliably in high-dust, high-temperature cement manufacturing facilities.
  • Supports continuous production with minimal maintenance requirements.