Triconex 4119A
TRICONEX 4119
TRICONEX 4119
TRICONEX 4119
Triconex 2658 | Tricon II Terminator Interface Module (7400096-200) – Field Service Notes - Image 5

Triconex 2658 | Tricon II Terminator Interface Module (7400096-200) – Field Service Notes

  • Model: Triconex 2658
  • Alt. P/N: 7400096-200
  • Product Series: Tricon II / Tricon v9–v10 SIS Platform
  • Hardware Type: Terminator Interface Module (I/O Connection Module)
  • Key Feature: 16-channel field wiring termination, 1500VAC isolation, TMR-compatible
  • Primary Field Use: Bridges field devices to Tricon I/O modules; provides fault-tolerant signal routing in SIL3 ESD/F&G systems
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Part number: Triconex 2658
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Description

Component Snapshot At-a-Glance

  • Model: Triconex 2658
  • Alt. P/N: 7400096-200
  • Product Series: Tricon II / Tricon v9–v10 SIS Platform
  • Hardware Type: Terminator Interface Module (I/O Connection Module)
  • Key Feature: 16-channel field wiring termination, 1500VAC isolation, TMR-compatible
  • Primary Field Use: Bridges field devices to Tricon I/O modules; provides fault-tolerant signal routing in SIL3 ESD/F&G systemsTriconex 4119A

    Triconex 4119A

Hard-Numbers: Technical Specifications

  • Channel Count: 16 digital I/O points (field side)
  • Backplane Interface: Tricon II dedicated I/O bus
  • Power Input: 24VDC ±10% (from chassis backplane)
  • Power Draw: 6W (max)
  • Isolation Rating: 1500VAC (field-to-backplane, per channel)
  • Operating Temperature: -40°C to +70°C
  • Shock Rating: 30G (operating), 50G (non-operating)
  • Vibration Rating: 5G (operating), 10G (non-operating)
  • Dimensions: 8.5” H × 4.5” W × 9.5” D
  • Weight: 3.5 lbs (1.59 kg)
  • Certifications: IEC 61508 SIL3, TÜV, CE, UL

 

The Real-World Problem It Solves

Field termination for Tricon SIS used to mean messy, error-prone hand-wired marshalling panels. Loose terminals, bad crimps, and lack of channel isolation caused spurious trips and SIL3 certification voids.Where you’ll typically find it:

  • Refinery ESD cabinets: 16-point DI/DO field termination to Tricon 3503E/3625 modules
  • Offshore F&G racks: Fire/gas detector wiring hub for Tricon II SIS
  • Power plant BMS: Burner management system I/O marshalling in SIL3 cabinetsThis module delivers factory-built, isolated termination in a single slot—cuts wiring time by 60% and eliminates field-induced ground loops.

 

Hardware Architecture & Under-the-Hood Logic

Passive, non-intelligent termination card—no onboard MCU; acts as an isolated signal bridge between field and Tricon backplane.

  1. Field side: 16 screw-terminal blocks for direct connection to 24VDC sensors/actuators.
  2. Isolation layer: 1500VAC reinforced dielectric barrier between field and backplane circuits.
  3. Backplane side: Tricon II edge connector mates with chassis I/O bus.
  4. Channel routing: Each field terminal maps 1:1 to Tricon I/O module pins (no internal logic).
  5. LED indicators: Per-channel status lights for quick fault identification (open/short).
  6. Chassis grounding: Integrated earth lug bonds module to cabinet ground for EMI shielding.
Triconex 4119A

Triconex 4119A

Field Service Pitfalls: What Rookies Get Wrong

Over-Tightening Field TerminalsTechs crank screws down hard to “be safe.” Deforms terminal blocks, cracks insulation, and creates high-resistance connections that cause intermittent DI drops.

  • Field Rule: Torque to 0.8–1.0 N·m; no tool leverage—hand-tight plus 1/4 turn only.

Mixing Isolated/Non-Isolated WiringRookies run unshielded cable to 2658 inputs. Breaks 1500VAC isolation, introduces EMI, and triggers random SIS trips in high-noise areas.

  • Quick Fix: Use 18–22 AWG shielded twisted pair; ground shield only at cabinet earth bus.

Incorrect Backplane Slot AssignmentUsers slot 2658 into standard I/O slots instead of dedicated Tricon II termination slots. Causes bus conflicts, no channel recognition, and TMR redundancy loss.

  • Field Rule: Install only in Tricon II chassis slots 3–6; check slot map label inside cabinet door.

 

Commercial Availability & Pricing Note

Please note: The listed price is for reference only and is not binding. Final pricing and terms are subject to negotiation based on current market conditions and availability.

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