MTL F860-CA

  • Product Name: MTL F860-CA IOTA (Instrumentation Outer Terminal Assembly)
  • Product Introduction: Passive Input/Output Termination Assembly​ designed for mounting MTL F801/F802​ Fieldbus Power Conditioner modules, providing redundant power distribution and termination for 8 Foundation Fieldbus H1 segments​ in Honeywell Experion Series C or equivalent racks.
Category:
Description
  • Technical Specifications:
    • Model: F860-CA
    • Format: 11.6 inch​ IOTA (Series C compatible)
    • Segment Capacity: 8 segments​ (each segment supports F801 or F802 module)
    • Compatible Modules: F801​ (21.5 V, 350 mA), F802​ (28 V, 500 mA)
    • Isolation: Fully isolated segments
    • Alarm Facility: Remote alarm contacts (dry) for segment/power fault
    • Diagnostics: Supports online diagnostics via F809F​ module option
    • Power Input: 24 V DC​ via backplane or external screw terminals (redundant capable)
    • Mounting: Secured via M3 screws​ to Series C channel; also compatible with DIN/rack
  • Functional Features: Passively interconnects power modules to field terminals; maintains segment termination automatically (single or redundant F80x); high-density design; low power dissipation.
  • Performance Parameters: Supports Foundation Fieldbus H1​ physical layer; voltage/current per F80x module spec; alarm signaling latency immediate on fault.
  • Material Composition: Aluminum/steel​ chassis for IOTA; high-temp FR4 PCB with gold-plated multi-pin connectors.
  • Structural Characteristics: Passive backplane with 2 multi-pin connectors​ for FIM IOTA cable; screw terminals for field/segment wiring; positions for 8 power modules + optional diag module; mechanical keying for correct module insertion.
  • Working Principle: F80x modules plug into F860-CA; CA distributes 24 V DC​ to modules and routes Fieldbus signals​ from FIM (Fieldbus Interface Module) to module outputs; module outputs conditioned power+signal to field segments; alarms generated by F80x passed via CA interconnect to control system.
  • Advantages: Passive design maximizes reliability (no active CA electronics to fail); supports redundant F80x for high availability; compact 8-segment in 11.6″; hot-swap capable F80x modules.
  • Applicable Industries: Process Automation (Refining, Chemical, Pulp & Paper), Oil & Gas, Power, Pharmaceutical (where Foundation Fieldbus is deployed).
  • Model Series: MTL F860​ Series IOTA / F80x Power Conditioners.
  • Installation Requirements: Install in Series C I/O cabinet​ mounting channel using M3 screws; connect 24 V DC​ via embedded bus or external terminals; use specified FCAB-xx​ IOTA power cables; ensure FIM IOTA cables connected to multi-pin headers.
  • Usage Precautions: Verify F801 vs F802​ voltage/current rating matches segment design; ensure redundant​ F80x modules are same type; do not mix active diagnostics module (F809F) incompatibly; check alarm​ wiring for proper PLC/DCS input configuration; confirm earth bonding of IOTA chassis.
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