Honeywell MC-TAIL02 51304437-150 Analog Input FTA

Honeywell MC-TAIL02 51304437-150 Analog Input FTA

The Honeywell MC-TAIL02 51304437-150, also cataloged as the MC-TAIL02 Analog Input FTA, operates as a dedicated hardware component for field signal termination and low-level sensor conditioning within Experion PKS and TDC 3000 DCS platforms.

Hardware Specifications

Process Control and Cold Junction Compensation (CJC)

Low-level field termination assemblies provide millivolt and temperature sensor signal routing to centralized I/O processors. The board incorporates high-accuracy cold junction compensation (CJC) circuits across thermocouple termination points to eliminate parasitic thermal EMF errors generated at the copper terminal junctions. Built-in channel-to-channel isolation networks rated at 500 VDC prevent ground loops, common-mode voltage noise, and transient field surges from distorting sensitive RTD and millivolt measurements.

Frequently Asked Questions

Q: Can the MC-TAIL02 FTA directly power 2-wire 4-20 mA loop transmitters?

A: No. The MC-TAIL02 is configured for low-level millivolt, RTD, and thermocouple inputs; 2-wire current loop transmitters require an external 24 VDC loop power supply.

Q: What is the purpose of the conformal coating on the MC-TAIL02 circuit board?

A: The conformal coating protects internal surface-mount components and trace copper against atmospheric moisture, dust contamination, and corrosive chemical vapors in harsh industrial control rooms.

Field Installation Guidelines

• Secure the Size B assembly onto standard cabinet DIN rails or rack frames using integrated metal mounting clips.
• Connect thermocouple leads directly to the compression terminals, ensuring correct wire polarity to prevent CJC temperature offset errors.
• Route low-level RTD and millivolt signal wiring separately from high-voltage AC cables to eliminate inductive noise coupling.
• Connect single-ended cable shield drain wires strictly to the cabinet ground bus bar while insulating the field-side shield ends.
• Attach the multi-conductor interface cable securely between the FTA header socket and the corresponding low-level IOP card inside the DCS rack.