Overview
Manuals
Redundant Inputs
Transmitter Supply
Common Reference
Features:
- Supports 16 HLAI or Smart Transmitter Interface circuits.
- Listed for redundant service with compression field terminals.
- Coated size-B board with a 307.3 x 120.65 mm footprint.
Honeywell MC-TAIH12 is a conformally coated sixteen-circuit field termination assembly for high-level analog input and Smart Transmitter Interface service. The manufacturer compatibility matrix identifies this size-B compression-terminal arrangement for redundancy. It is listed with the MC-PAIH03 analog input processor and the PSTX03 smart-transmitter processor family. The FTA does not independently establish measurement accuracy or communications behavior; those characteristics depend on the processor and the installed system configuration.
For the documented HLAI pairing, input selections include 0-5 V, 1-5 V, 0.4-2 V and 4-20 mA through 250 ohms. The TAIH12 transmitter power conditioning uses 145-ohm resistor current limiting rather than a fused output. Observe the common-mode limits and the low-side common-jumper condition in the manufacturer table. The 307.3 mm by 120.65 mm board footprint, compression terminals and redundant cable arrangement should all be checked against the installed assembly before replacing the existing 51304337-150 record.
The MC-TAIH12 51304337-150 Honeywell Coated Redundant Analog Input Termination may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell MC-TAIH12 51304337-150 documentation and reference links.
Important Notice: The excerpt retains the original Honeywell IO03-500 cover, relevant model and electrical tables, and dimensional footnotes. It is a historical specification, not a current lifecycle notice. Confirm the complete assembly label and installed processor.
The TAIH12 layout supports the specified redundant processor arrangement for sixteen field circuits. Identify both processor destinations and the installed cable set before service. A board with the same circuit count but a nonredundant layout is not an automatic replacement for this two-path installation.
The documented TAIH12 transmitter feed is resistor current limited through 145 ohms and is not individually fused. Check the instrument power requirements and the approved field circuit. Do not apply the enhanced-power TAIH22 current-limiter specification to this different termination arrangement.
The HLAI specification states a common-mode limit of -6 to +5 V peak from DC to 60 Hz. Its footnote describes the normal low-side connection to system common through an FTA jumper. Confirm the approved grounding arrangement before changing any common connection.
