Honeywell TK-IOLI01 (51403427-175) – I/O Link Interface Module for Honeywell TDC/TPS and Experion TPS

The Honeywell TK-IOLI01, part number 51403427-175, is an I/O Link Interface module typically used in Honeywell TDC/TPS (and Experion TPS) architectures to bridge the controller backplane with the I/O Link bus. In many cases, it’s the small card that quietly keeps field I/O on time and in sync—linking I/O termination hardware to the controller with deterministic, redundant communications. From my experience, engineering teams pick this card both for expansion projects and as a reliable spare when uptime really matters.

Order Placement Process and Guarantees

• Warranty period: 365 days
• Delivery time: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express delivery options: FedEx, UPS, DHL

Key Features

• I/O Link bus interface – Provides the communication path between the controller backplane and I/O termination hardware, keeping signals organized and deterministic.
• Redundancy-friendly design – Commonly deployed as A/B pairs for high availability; switchover is typically seamless to the process.
• Backplane powered – No external power feed needed; power is supplied by the Honeywell system chassis.
• Status and diagnostics – You might notice the front LEDs and basic onboard diagnostics that help technicians confirm link health quickly.
• Proven in legacy and migration setups – Works in classic TPS/TDC layouts and, in many cases, mixed systems during phased upgrades.
• Stable, low-latency comms – Designed for process control use where predictable I/O scan and recovery behavior is important.

Technical Specifications

One thing I appreciate is how straightforward it is for maintenance—teams usually confirm link status on the faceplate and move on. A maintenance supervisor at a utilities plant told me their swap-over took under 15 minutes during a planned pause, which seems to be the norm when the chassis and wiring are in good shape.

Related or Supporting Products

• TC-IOLI01 – Conformal-coated variant in many installations; chosen for harsher environments.
• Honeywell HPM / PM controllers – Common controller platforms that use I/O Link for field I/O connectivity.
• I/O Link cable assemblies – Shielded A/B cable sets for redundant I/O Link networks.
• Honeywell I/O termination assemblies (IOTA/IOM families) – Field wiring termination and conditioning hardware connected over I/O Link.
• System power supplies and chassis – Matching Honeywell backplane power and compatible racks for reliable operation.

Installation & Maintenance

• Cabinet and environment – Install in a clean, dry control cabinet with adequate ventilation; keep ambient 0–50°C. Separate low-voltage control wiring from power cabling where possible.
• Grounding and shielding – Bond the cabinet properly; maintain I/O Link cable shielding continuity to minimize noise on long runs.
• Redundancy practice – Use A/B redundant cards and cables when the process demands high availability; keep firmware and hardware revisions matched across pairs.
• Wiring and backplane – Verify correct slotting and keying before insertion; always observe ESD handling. Power down if required by site policy.
• Routine checks – Periodically inspect connectors, tighten field terminations, and review diagnostics. Firmware updates, when applicable, should follow Honeywell release notes and MOC procedures.
• Documentation – Keep the module’s revision level and part number logged; it helps in fast replacements and compatibility checks.

Quality & Certifications

• Certifications: CE (EMC/Low Voltage), UL Recognized. RoHS compliance may vary by production date; many units in service are compliant.
• Manufacturing: Produced under Honeywell quality systems (ISO 9001-based manufacturing processes).
• Warranty: 365-day warranty from shipment; replacement or repair support if issues arise under normal use.

If you’re refreshing spares or expanding an I/O Link segment, this module is a safe, low-drama choice. Typically it drops in without software surprises, provided the controller image and module revision are aligned.