Component Snapshot At-a-Glance

• Model: Triconex 4000042-120
• Alt. P/N: No alternate part number
• Product Series: Tricon V9/V10 TMR SIS Platform
• Hardware Type: Short-run multi-conductor preassembled cable assembly
• Key Feature: Keyed molded connectors and full shielding for TMR signal protection
• Primary Field Use: Routes TMR data and 24VDC power between adjacent modules inside Tricon chassis.

Hard-Numbers: Technical Specifications

• Cable Length: 1.20 ft (0.37 m)
• Conductor Gauge: 24 AWG stranded tinned copper
• Shield Construction: Foil plus braided dual shielding
• Isolation Rating: 1500VAC dielectric withstand
• Operating Temperature: -20°C to +80°C
• Minimum Bend Radius: 4 inches (102 mm)
• Jacket Material: Flame-retardant industrial PVC
• Connector Type: Polarity-locked molded keyed plug
• Humidity Rating: 5% to 95% non-condensing
• Vibration Rating: Rated for continuous cabinet vibration

The Real-World Problem It Solves

Short jumpers made from loose wire or generic ribbon cable fail to maintain proper shielding. Poor pin alignment and exposed conductors lead to noise, intermittent signal loss and module damage.Where you’ll typically find it:

• Dense Tricon main chassis connecting side-by-side I/O modules
• Compact expansion racks for internal module bus bridging
• SIS marshalling frames with tight spacing between termination hardwareThis factory-built short cable ensures consistent pinout, shielding and mechanical stability in confined cabinet spaces.

Hardware Architecture & Under-the-Hood Logic

This is a passive cable assembly with no active components. It carries parallel TMR signals and system power between adjacent hardware.

1. Keyed connector on one end mates to source module port, preventing reverse insertion.
2. Individual conductors carry dedicated data lines and 24VDC power for TMR operation.
3. Dual shielding blocks EMI from nearby power circuits and electrical equipment.
4. Conductors follow factory defined pin mapping for 1:1 signal transfer.
5. Opposite molded connector plugs into the destination module or backplane header.
6. Integrated strain relief at both ends stops conductor breakage from vibration and movement.

Field Service Pitfalls: What Rookies Get Wrong

Forcing Misaligned ConnectorsWorkers push connectors when key tabs do not line up. Bent pins create permanent open circuits and hard-to-troubleshoot faults.

• Field Rule: Line up key notches completely before seating. Do not apply force if binding occurs.

Routing Cable With Sharp BendsTight bends below the rated radius crack insulation and fracture internal strands. Failures often show up after equipment vibration cycles.

• Quick Fix: Route with gradual curves only. Never go below 4 inches minimum bend radius.

Damaging Shield During InstallationPeeling back shielding or cutting jacket material compromises noise protection. Ground loops and signal drift follow in high-EMI areas.

• Field Rule: Keep outer jacket and shielding fully intact. Ground shield only at main chassis end.

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.