Overview
Manuals
TB1/TB2 Channel Map
TB3 Sense Power
Open-Wire Resistor
Features:
- Nonredundant 24 V DI IOTA with 32 field-input channels.
- Separate TB1/TB2 channel groups and TB3 internal/external sense-power connections.
- Documented field-current limiting and optional 22-kohm open-wire detection circuit.
The CC-TDIL01 board provides the field termination interface for a thirty-two-channel Series C digital input installation. The original connection tables divide the inputs into two groups of sixteen. TB1 positions 1-32 serve channels 1-16; TB2 repeats the screw numbering for channels 17-32. Odd-numbered screws carry channel power and even-numbered screws provide the corresponding return. Honeywell's selection table lists the nonredundant IOTA with CC-PDIL01 digital input and CC-PDIS01 sequence-of-events modules. Scan performance, optical isolation and event handling remain properties of the installed electronics and configuration, not independent ratings of this bare termination board.
The four-position TB3 block supports internal Honeywell 24 V sense power or an approved external supply. Its positions are internal positive, internal return, external positive and external return in that order. Preserve the documented jumper and return arrangement when exchanging a board; do not connect two supplies together simply because both are labelled 24 V. The guide describes current-limited protection for field shorts and a 22-kohm field resistor option for open-wire detection. Verify the actual field circuit and configured diagnostic response during commissioning. The nominal nine-inch board format must be distinguished from measured net dimensions and protective-package dimensions.
The CC-TDIL01 51308386-175 Honeywell Nonredundant 24 V Digital Input IOTA may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell CC-TDIL01 51308386-175 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.
TB1 covers inputs 1-16 and TB2 covers inputs 17-32. Both terminal blocks use positions 1-32 locally, with power on odd-numbered screws and returns on the following even-numbered screws. Preserve both the block designation and channel number on wire labels; a screw number without TB1 or TB2 does not uniquely identify the field input.
TB3 position 1 is internal +24 V, position 2 internal return, position 3 external +24 V and position 4 external return. The original diagrams distinguish the internal jumper arrangement from external supply wiring. A qualified technician must confirm the selected source, polarity and return path before energizing the installation; matching nominal voltage alone is insufficient.
Honeywell shows an optional 22-kohm resistor in the field circuit to permit open-wire detection. Its placement must follow the original diagram and the installed input-module configuration. This is not a claim that every connected dry contact automatically provides wire-break diagnostics. Check the resulting input quality and alarm response with the approved commissioning procedure.
