Overview
Manuals
IOM and IOTA Pairing
24 V Contact Signals
Nonredundant Wiring
Features:
- Non-redundant IOTA provides a dedicated field-wiring and mounting interface for the compatible 24 V digital-input module.
- Honeywell documents a 32-channel CC-PDIL01 combination, with 18 to 30 VDC DI field power and defined ON/OFF sensing thresholds.
- The input module supplies the optical isolation and input processing; selecting the correct IOTA does not by itself establish system-level compatibility.
The DC-TDIL01 separates the field-termination role from the electronics that acquire digital input states. In the documented CC-PDIL01 arrangement, field wiring terminates at the IOTA and the associated input module processes the 32 discrete channels. The nominal signal is 24 VDC, and the published electrical thresholds describe that matched input assembly rather than an independent function of the terminal board. This distinction matters when a maintenance order requires only the termination assembly instead of a complete IOM-and-IOTA set.
For an installed system, establish the applicable Honeywell hardware generation and documentation revision before deciding on a replacement. The Universal Marshalling specification lists DC-TDIL01 with CC-PDIL01, while other Series C guide revisions contain different DC-prefixed module associations. Those listings must not be combined into an unrestricted interchangeability claim. Record the actual IOM label, terminal assignments, field-power arrangement and non-redundant mounting position, then use the corresponding installation instructions to verify the replacement and test the affected plant signals.
The DC-TDIL01 Honeywell 24 V Digital Input Termination Assembly may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell DC-TDIL01 official technical documentation and product links.
This multi-page Honeywell technical document contains the exact model and its technical data. Apply the values to the supplied type number and verify its revision before installation.
DC-TDIL01 is the termination assembly, not the CC-PDIL01 electronic input module. Honeywell's EP-DOCX-SCA-R300 compatibility table lists that combination for DI-24 service. Confirm the actual IOM marking and system documentation revision before ordering; a matching field voltage alone is insufficient to establish compatibility with another module generation.
For the CC-PDIL01 combination documented in EP03-495-500, the DI supply range is 18 to 30 VDC. The sensing limits are at least 13 VDC or 3 mA for ON, and no more than 5 VDC or 1.2 mA for OFF. Check field-device leakage and wiring voltage drop against the applicable input specification, not merely a nominal 24 V label.
The DC-TDIL01 arrangement is non-redundant; DC-TDIL11 is separately listed as a redundant IOTA. Use the terminal assignments and field-power instructions for the exact installed assembly. Before disturbing wiring, record channel labels and isolate the affected circuits under the site's approved procedure. After fitting, prove the ON and OFF states of each affected input and review module diagnostics.
