Honeywell MC-TAIH22 | 16-Channel HLAI/STI FTA

• Model: MC-TAIH22
• Part Number: 80366195-150 / 51204170-250 identification found in published listings; verify the physical nameplate
• Brand: Honeywell
• Series: TPS Process Manager / HPM I/O
• Core Function: Terminates high-level analog and STI field signals
• Type: Field Termination Assembly (FTA)
• Key Specs: 16 inputs; HLAI/STI; compression terminals; Mounting Size B

Product Introduction

Honeywell MC-TAIH22 is a 16-channel High-Level Analog Input / Smart Transmitter Interface (HLAI/STI) Field Termination Assembly used with Honeywell TPS Process Manager and related HPM I/O hardware. Honeywell planning documentation identifies it as an HLAI/STI FTA with 16 channels, compression terminals, and Mounting Size B.

This is field-termination hardware, not the active analog input processor itself. That distinction matters when ordering replacements. The published hardware tables associate MC-TAIH22 with non-CE part number 80366195-150, while some supplier listings identify the same model with 51204170-250. Because these identifiers conflict, the actual nameplate should be checked before a purchase order is released.

Key Technical Specifications

Honeywell’s technical documentation lists MC-TAIH22 and MC-TAIH23 as the non-CE and CE versions respectively, while the broader FTA documentation confirms the 16-input configuration.

Honeywell MC-TAIH22

Application and Selection Notes

The unit is intended for installations where high-level analog field signals or Smart Transmitter Interface signals must be terminated into the Honeywell I/O architecture. Sixteen channels are provided on the FTA, making it suitable for dense cabinet layouts where multiple transmitter loops are grouped at one termination point.

A key procurement point is the CE distinction. MC-TAIH22 is not simply interchangeable with MC-TAIH23 because the latter is documented as the CE-marked version. If the destination plant requires specific conformity documentation, verify this before shipment.

There is also a part-number issue worth flagging. The Honeywell planning table gives 80366195-150, while older supplier catalogs show 51204170-250 against MC-TAIH22. For that reason, I would use the complete physical label—not a database entry alone—as the final identification reference.

Quality Inspection and Shipping

For an MRO spare, the inspection sequence should be practical:

1. Incoming inspection: Check the complete model number, part number, serial information, terminal blocks, housing, and mounting hardware.
2. Visual inspection: Look for corrosion, cracked insulation, damaged compression terminals, loose hardware, and evidence of field modification.
3. Continuity test: Verify applicable termination paths against the wiring documentation.
4. Configuration check: Compare channel numbering and field wiring against the original cabinet drawing.
5. Final QC: Photograph the nameplate and terminal side, complete the Test Report, apply QC identification, and package in ESD-safe protective material.

For international shipment, the commercial invoice should distinguish this item as a Field Termination Assembly, rather than incorrectly declaring it as an analog input processor.

Common Replacement Pitfalls

Part-number confusion: This is the first thing I would check. Published sources associate different numerical identifiers with MC-TAIH22. Verify the actual label before ordering.

CE vs non-CE: MC-TAIH23 is listed as the CE-marked counterpart. Do not substitute it without confirming the project requirements.

FTA vs I/O processor: The FTA terminates field wiring. It should not be confused with the active I/O processor installed in the system.

Channel mapping: Photograph every connected terminal before removal. It sounds basic… but it saves commissioning time.

Terminal type: MC-TAIH22 uses compression terminals according to Honeywell’s planning data. Confirm this against the existing cabinet before shipment.

Personally, I would ask the supplier for four photographs before approving the order: nameplate, front, terminal side, and connector side. With older TPS hardware, that small step can prevent an expensive wrong-part shipment.

Quick Conclusion

• 16-channel Honeywell HLAI/STI Field Termination Assembly
• Designed for TPS Process Manager / HPM I/O architectures
• Compression-terminal configuration
• Mounting Size B
• MC-TAIH23 is the documented CE-marked counterpart
• Verify the actual part-number marking because published references show differing identifiers
• Confirm FTA type, CE requirement, channel wiring, and associated I/O processor before replacement