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Key Technical Specifications
| Parameter | Value |
|---|---|
| Input / Output Model | CC-PAIM01 |
| Compatible FTAs | MU-TAMR04, MU-TAMT04, MU-TAMT14 |
| Input Type | Thermocouple and/or RTD |
| Input Channels | 64, fully isolated, in 16-ch increments |
| Input Scan Rate | 1 second (fixed), up to 64 ch/sec max |
| Channel Bandwidth | 0 to 4.7 Hz (−3 dB) |
| Nominal Input Range (TC) | −20 to +100 mV |
| Max Normal Mode Input | −10 to +10 V (TC); −1 to +2 V @ 100 mA (RTD) |
| Gain Error | 0.050% FS max |
| Temperature Stability | ±20 ppm/°C max (TC and RTD) |
| Long-Term Drift | 500 ppm |
| Input Impedance | 1 MΩ dc (TC only) |
| CMRR (50/60 Hz) | 120 dB min |
| RTD Sensor Excitation | 1 mA |
| Cold Junction Reference Accuracy | ±1.0°C (0–50°C); ±1.5°C (−20–60°C) |
| Open Thermocouple Detection | ≤1,000 Ω no-trip; ≥1,500 Ω guaranteed trip |
| RTD Max Lead Resistance | 15 Ω |
| Max Cable Distance (IOTA to FTA) | 1,000 ft, 16 AWG, two twisted pair per FTA |
| FTA Dimensions | 2.5 D x 4.9 W x 12.1 L in (63.5 x 124.5 x 307.3 mm) |
Product Introduction
The Honeywell CC-PAIM01 is the LLMUX input module for Experion PKS Series-C I/O, pairing with the C300 controller to bring in up to 64 thermocouple or RTD signals through PMIO field termination assemblies. It’s the go-to module when a rack needs dense temperature monitoring without burning a slot per 16 points.
Each FTA handles 16 channels, mixed and matched between RTD and TC/mV types on the same module. Built-in cold junction compensation and configurable Open Thermocouple Detection keep bad sensor data from propagating into control logic — no external signal conditioning required.
CC-PAIM01
CC-PAIM01
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No status LED on IOM | Loss of IOTA/rack power | ❌ Low | Verify 24 VDC bus at rack power terminals | Check power supply and bussed feed before replacing IOM |
| Single channel reads NAN / bad PV | Open thermocouple or broken sensor lead | ❌ Low | Measure sensor loop resistance at the FTA terminal | Fix wiring/sensor first — OTD trips as designed, not a module fault |
| All channels on one FTA dead, others fine | FTA connection or cable-to-FTA fault | ❌ Low | Check twisted-pair cable and FTA seating | Reseat/replace FTA cable before swapping the IOM |
| Channel Soft Failure across the whole module | IOM electronics fault or firmware mismatch | ✅ High | Check diagnostic status in Experion Control Builder | Usually requires IOM replacement |
| CJR readings drifting over time | Cold junction reference degradation | ✅ Medium | Compare CJR reading against a known-good reference junction | Replace IOM if drift exceeds ±1.5°C spec |
| RTD readings off by a fixed offset | Excess lead resistance (>15 Ω) | ❌ Low | Measure total RTD lead loop resistance | Correct wiring/lead length before assuming module fault |
If the fault persists after ruling out field wiring and power, contact technical support with the diagnostic buffer readout and photos of the FTA wiring for a faster root-cause call.
Frequently Asked Questions (FAQ)
Is the CC-PAIM01 hot-swappable?
No. Pull power to the IOTA slot before removing or inserting the IOM. The module isn’t rated for live insertion, and hot-swapping risks a momentary short across the backplane pins.
Does swapping this module wipe my configuration?
No — channel configuration (TC type, RTD type, OTD settings) lives in the Experion Control Builder database, not on the IOM itself. Swap the physical module and the controller re-downloads the point configuration on next scan.
Can I mix RTD and thermocouple inputs on the same CC-PAIM01?
Yes. Each of the four FTA positions supports 16 channels independently, so you can run RTD FTAs on some positions and TC/mV FTAs on others, in any combination, up to 64 total points.
Is this part still supported, or is it obsolete?
Series-C I/O and the CC-PAIM01 remain in Honeywell’s Experion lineup as legacy-supported hardware. Stock on new units has tightened, which is why lead times and surplus availability matter more here than on current-production parts. Confirm compatibility with your Experion release before ordering.
Why is this listed cheaper than a factory-direct order?
This is a New Surplus/New Original unit sourced outside Honeywell’s direct sales channel — factory-sealed packaging, verified serial number, never installed. You skip the OEM markup and typical multi-week factory lead time; you don’t get a factory warranty, which is why our own testing and warranty terms are documented in the listing.
What’s actually tested before this ships?
Power-on self-test, FTA communication handshake, and a full 64-channel simulation across TC and RTD types, plus insulation resistance testing. Test reports and photos are available on request.
Can I use a redundant configuration with this module?
Redundancy on the LLMUX architecture works differently than the 16-point analog/discrete modules — check the Series-C I/O function matrix or your Honeywell rep before assuming a second CC-PAIM01 gives you hot backup; don’t wire it from memory.
