Honeywell TC-IAH161 High‑Level Analog Input Module for TDC 3000 / Experion TPS I/O

The Honeywell TC-IAH161 is a high‑level analog input (HLAI) module used in TDC 3000 and Experion TPS environments to bring reliable voltage and current signals into the control system. From my experience, it’s chosen for brownfield upgrades because it drops into the standard Honeywell I/O chassis and works with the familiar field termination assemblies (FTAs), which typically keeps commissioning time down. You might notice that it’s most often configured for 0–5 V, 1–5 V, or 0–10 V signals, with 4–20 mA handled by a simple shunt at the FTA—straightforward for maintenance teams.

Order Placement Process & Guarantees

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

Key Features

• 16‑channel high‑level analog input – Suited for plants standardizing on multi‑channel HLAI to reduce cabinet footprint.
• Typical signal ranges – 0–5 V, 1–5 V, 0–10 V; 4–20 mA supported using an external shunt at the FTA.
• Stable signal conditioning – Designed for control‑room environments, with filtering that typically smooths noisy field signals.
• Seamless system integration – Backplane communication to the Honeywell controller (PM/HPM/APM), no external power wiring to the card.
• Maintenance‑friendly – Front indicators and clear channel diagnostics help techs pinpoint wiring or sensor issues faster.
• Retrofit‑ready – Often used as a direct replacement where a high‑level AI card is required in TDC 3000 / Experion TPS cabinets.

Technical Specifications

Related or Supporting Products

• Honeywell TC-IAH061 – High‑level analog input module from the same family; useful where a different channel count or revision is specified on legacy cabinets.
• Honeywell Field Termination Assemblies (FTA) for HLAI – Matching FTAs with built‑in shunts or jumpers for 1–5 V / 4–20 mA loops; choose the FTA type to match your signal range and shielding practice.
• Honeywell PM / HPM / APM controller modules – Controller side modules that interface to the I/O backplane used by the TC‑IAH161.
• Shielded I/O link cables – Recommended to minimize noise pickup between FTA and cabinet routing, especially in MCC‑heavy areas.

One thing I appreciate is how this module behaves in refineries with mixed signal types. A maintenance lead at a chemical plant told me they swapped a TC‑IAH series card during a turnaround, reused the existing FTA, and the loop checks were done by noon—no rewiring headaches.

Installation & Maintenance

• Cabinet & environment – Install in a clean, dry control‑room cabinet with adequate ventilation. Keep low‑level analog cabling away from high‑voltage or VFD lines.
• Grounding & shielding – Use shielded twisted pair for analog signals; bond shields at the FTA end as per Honeywell practice to reduce ground loops.
• Wiring practice – Select the correct FTA type for 1–5 V or 4–20 mA (with shunt). Label channels clearly; keep spare channels documented for later expansion.
• Safety – De‑energize the I/O segment before card replacement. Verify proper controller scan and status after seating the module.
• Routine checks – Periodically verify analog scaling and range; perform loop checks during planned outages. Light dust cleaning with ESD precautions typically extends service life.
• Firmware/config – Module settings are controller‑side; keep configuration backups and change logs in your DCS historian for quick recovery.

Quality & Certifications

• Manufactured under ISO 9001 quality systems (Honeywell)
• CE marking for EMC on applicable builds; UL/CSA recognition is common for control‑room modules
• RoHS compliance varies by production year; many TPS/TDC spares are legacy form‑fit builds
• Commercial warranty: 365 days