Overview
Manuals
Removable Field Plugs
Packaged Optical Inputs
Status and Event Use
Features:
- Provides 32 field circuits for 24 V DC digital input service.
- Packaged coated assembly with removable screw terminals.
- Manufacturer ordering description specifies no plug-in isolators.
Honeywell MC-TDID72 is a packaged field termination assembly for 32 digital input circuits with 24 V DC field service. Its removable screw terminals provide a different maintenance interface from the compression and nonremovable-screw versions in the same broad termination family. The manufacturer ordering table explicitly identifies this packaged form as being without plug-in isolators. Accordingly, isolation or hazardous-area suitability must not be claimed merely from the packaged construction or the presence of conformal coating.
The manufacturer compatibility table associates TDID72 with the PDIX02 digital-input and PDIS12 sequence-of-events processor families. The size-C assembly uses a 462.28 mm by 120.65 mm board footprint. During replacement, preserve each removable connector location and field wire assignment, and verify the complete assembly marking. Processor selection and configured event functions remain separate from the termination board; the hardware should not be described as a standalone event recorder, safety input or universal digital interface.
The MC-TDID72 51303928-150 Honeywell Packaged Digital 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-TDID72 51303928-150 documentation and reference links.
Important Notice: This excerpt retains the original Honeywell IO03-500 cover, applicable model tables, electrical specifications and their footnotes. It is a historical specification, not a current lifecycle notice. Match the complete assembly label and installed processor before replacement.
The removable screw-terminal arrangement allows field connections to remain grouped, but each plug must return to its documented position and orientation. Record the connector labels and input assignments before service. Do not assume physically similar plugs from another FTA carry the same circuit assignments.
The packaged TDID72 uses optical isolation without removable plug-in isolators. Its documented field-to-system rating is 1500 V AC RMS or +/-1500 V DC, but that rating is not applicable when system power is used for the field inputs. Confirm the actual field-power arrangement before citing isolation.
The field board is listed with PDIX02 and PDIS12 processor families. Ordinary input status and sequence-of-events behavior depend on which processor and project configuration are installed. Verify the required input response and recording function through the system documentation before accepting a replacement.
