Honeywell MU-TDID72 51303928-100 Digital Input FTA

Honeywell MU-TDID72 51303928-100 Digital Input FTA

Configured for discrete signal termination and status monitoring in Experion PKS and TDC 3000 cabinet architectures, the Honeywell MU-TDID72 51303928-100 (51303928-100 Digital Input FTA) provides direct physical/electrical execution.

Hardware Specifications

Process Control and Channel-to-Channel Isolation

Field Termination Assemblies route field contact signals to high-density digital input processors. The board maintains signal filtering across all 32 channels to eliminate contact bounce and field line noise before presenting logic states to the I/O bus. Integrated optical isolators provide channel-to-channel isolation and field-to-logic isolation up to 500 VDC, protecting central controller logic from field-side voltage surges, short circuits, and ground potential offsets in plant power distribution networks.

Frequently Asked Questions

Q: What is the functional difference between part numbers 51303928-100 and 51303928-150?

A: Part number 51303928-100 (MU-TDID72) is the standard uncoated assembly, whereas 51303928-150 (MC-TDID72) features a conformal coating applied to internal circuit traces for enhanced protection against airborne contaminants.

Q: Can the MU-TDID72 FTA accept AC discrete input signals from field switches?

A: No. The MU-TDID72 is rated strictly for 24 VDC discrete signal inputs; AC inputs require specialized high-voltage AC input FTAs (such as MU-TDIA12 / MC-TDIA12).

Field Installation Guidelines

• Secure the Size B assembly onto standard cabinet DIN rails using the integrated mounting clips on the backplate.
• Strip field signal wire ends to 6 mm and secure them into compression terminal blocks, torquing screws to 0.5 Nm.
• Separate 24 VDC field input wiring from high-power AC cables in panel ducts to avoid inductive noise coupling.
• Ground all field cable shield wires directly to the cabinet ground bar, keeping the field-side shield ends isolated.
• Connect the 50-pin multi-conductor cable between the FTA header socket and the corresponding Digital Input IOP card until side retention latches snap shut.