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Key Technical Specifications
| Parameter | Specification |
|---|---|
| Assembly Model | CC-TDIL61 — DI 24V IOTA, Redundant |
| Type | Field Termination Assembly (no active signal processing electronics) |
| Compatible IOM | CC-PDIL51 — Digital Input 24V |
| Field Voltage Class | 24 VDC |
| Channels Supported | 32 |
| Isolation Rating | 1000 V |
| Redundancy | Yes — accepts a redundant IOM pair on the same IOTA |
| Footprint | 12″ (304 mm) |
| Non-Redundant Equivalent | CC-TDIL51 (9″), same IOM compatibility, no redundancy |
| Field Wiring Capacity | Up to 12 AWG / 2.5 mm² stranded wire per Series-C spec |
| Terminal Style | Two-level detachable terminals for field wiring |
| Field Power | Supplied directly through the IOTA — no external marshalling power required |
| Related IOTA (Higher Isolation, SOE-Capable) | CC-TDIL01/11 pairs with CC-PDIL01, 1500V isolation, adds SOE support |
| Environmental Note | Refer to Series-C Platform Specification EP03-520-xxx for full environmental ratings |
Product Introduction
The Honeywell CC-TDIL61 is the redundant field termination assembly for 32-channel, 24VDC digital input on Experion PKS Series-C, built specifically for the CC-PDIL51 IOM. It’s the 12″ redundant counterpart to CC-TDIL51 — same wiring, same channel count, with a second IOM slot for hot backup.
This pairing carries 1000V field-to-system isolation, distinct from the 1500V CC-TDIL01/11 line built for CC-PDIL01. Verify whether your application needs Sequence of Events timestamping before substituting one IOM/IOTA family for the other — check the current Honeywell function matrix for your specific project requirements.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No power to the IOM | IOTA not receiving 24 VDC bus power | ✅ High | Measure incoming 24 VDC at the IOTA power terminals | Check upstream power supply — the IOTA has no active electronics of its own |
| Single channel reads wrong state | Broken field wiring or dead field contact | ❌ Low | Verify wiring and contact continuity at the IOTA terminal | Correct field wiring first — the IOTA is passive |
| All 32 channels dead | IOM fault, not the IOTA | ✅ High | Swap in a known-good CC-PDIL51 IOM on the same IOTA | If the fault follows the IOM, the IOTA is fine — replace the IOM instead |
| Redundant IOM won’t switch over cleanly | IOTA seating issue or partner IOM fault | ✅ Medium | Check both IOM status LEDs and reseat if needed | Verify IOTA connector seating before condemning either IOM |
| Suspected IOTA damage (physical) | Corrosion, cracked terminal, mechanical damage | ✅ High | Visual inspection of terminals and connector pins | Replace IOTA — physical damage is the main failure mode on passive hardware |
Since this IOTA has no signal-conditioning electronics, most reported faults trace back to wiring or the paired IOM. If hardware damage is confirmed, send terminal and connector photos to support for verification.
CC-TDIL61
CC-TDIL61
Frequently Asked Questions (FAQ)
Is this the digital input module, or just the termination assembly?
Just the termination assembly. CC-TDIL61 has no signal-conditioning electronics — it’s the field wiring interface. You still need a CC-PDIL51 IOM plugged into it to actually process the digital input signal.
Can I use this with a CC-PDIL01 module instead of CC-PDIL51?
Don’t assume so without checking. These are two distinct IOM/IOTA families with different isolation ratings (1000V vs. 1500V) and function support. Cross-check the current Honeywell function matrix before mixing them.
Is the CC-TDIL61 hot-swappable?
The IOTA itself is generally not pulled live — de-energize the rack slot before removing it. The IOM plugged into it follows the standard no-live-insertion rule for Series-C IOMs.
Do I need this IOTA for a non-redundant setup?
No — for the same CC-PDIL51 channel configuration without redundancy, use CC-TDIL51 (9″ footprint) instead. CC-TDIL61 is specifically the 12″ redundant version.
Does this configuration support Sequence of Events (SOE)?
Verify this against your project’s function matrix before assuming either way — the CC-PDIL01/CC-TDIL01/11 pairing is the one commonly documented for SOE support. Don’t substitute IOM families on an SOE-critical loop without confirming the capability first.
Why is this cheaper than a factory-direct quote?
This is a New Surplus/New Original unit — factory-sealed, serial-verified, never installed — sourced outside Honeywell’s direct sales channel. You skip the OEM markup and lead time; our inspection and warranty terms stand in for a factory warranty.
What’s tested on a termination assembly before it ships?
Since it’s passive hardware, testing focuses on physical and electrical integrity: continuity check across all terminal paths, visual inspection for corrosion or damage, connector pin inspection, and a mated fit-check with a known-good CC- IOM. Photos available on request.
