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Key Technical Specifications
| Parameter | Value |
|---|---|
| Input/Output Model | CC-PAOX01 — High-Level Analog Output |
| IOTA Models (Non-Redundant) | CC-TAOX01, CC-GAOX21 |
| IOTA Models (Redundant) | CC-TAOX11, CC-GAOX11 |
| Output Type | 4–20 mA |
| Output Channels | 16 |
| Output Ripple | <100 mV peak-to-peak at line frequency, across 250 Ω load |
| Output Temperature Drift | 0.005% FS/°C |
| Output Readback Accuracy | ±4% FS |
| Output Current Linearity | ±0.05% FS nominal |
| Resolution | ±0.05% FS |
| Calibrated Accuracy | ±0.35% FS (25°C), including linearity |
| Directly Settable Output Range | 0 mA, 2.9 mA to 21.1 mA |
| Max Resistive Load (24 V supply, 22–28 VDC) | 800 Ω |
| Max Output Compliant Voltage | 16 V |
| Max Open Circuit Voltage | 22 V |
| Response Time (DAC code to output) | Settles within 1% of final value in 80 ms |
| Gap on Redundant Switchover | 10 ms max (0 mA gap) |
Product Introduction
The Honeywell CC-PAOX01 drives 16 channels of standard 4-20 mA current loops to valve positioners, actuators, and indicating devices on the Experion PKS C300 platform — no HART capability, straight current output. Per-channel FAILOPT lets you configure hold-last-value or shed-to-safe-value behavior if the IOM electronics fail.
Open-wire detection flags a broken loop with a Channel Soft Failure rather than letting a false reading pass to the control strategy. Redundant IOTA options (CC-TAOX11/GAOX11) cut switchover gap to 10 ms max — a straight-up swap for CC-PAOH01 when the loop doesn’t need HART.
CC-PAOX01
CC-PAOX01
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No status LED on IOM | IOTA/rack power loss | ❌ Low | Measure 24 VDC bus at IOTA power terminals | Check power supply before replacing the IOM |
| One channel stuck at 0 mA / open-wire fault | Broken field wiring or high loop resistance | ❌ Low | Measure loop current and resistance at the IOTA terminal | Fix field wiring — open-wire detection is doing its job, not a module fault |
| Output frozen at last value after a fault | FAILOPT configured as “hold last value” | ❌ Low | Check FAILOPT configuration for the affected channel | Confirm this is the intended behavior, not a defect |
| All 16 channels dead simultaneously | IOM electronics fault | ✅ High | Check module diagnostic status in Control Builder | Usually requires IOM replacement |
| Readback value disagrees with commanded output | Load resistance exceeds 800 Ω spec | ✅ Medium | Measure actual loop resistance against the 800 Ω max spec | Reduce loop load or add a repeater — not a module fault |
| Redundant switchover causes a control bump | Switchover gap exceeding 10 ms spec, or IOTA wiring fault | ✅ Medium | Check both IOM status LEDs and switchover event logs | Verify IOTA redundancy wiring before condemning either IOM |
If the fault persists after ruling out field wiring and loop resistance, send the diagnostic buffer readout and loop resistance measurements to support for faster root-cause turnaround.
Frequently Asked Questions (FAQ)
Is the CC-PAOX01 hot-swappable?
No. Kill power to the IOTA slot before pulling or inserting the IOM. Live insertion isn’t rated here, and doing it hot risks a momentary output glitch downstream on the loop.
What happens to my output if the module fails?
Depends on your FAILOPT setting. Configure each channel independently to either hold its last commanded value or shed to a user-defined safe value — worth confirming this is set correctly on critical loops before you need it.
Does this module support HART?
No. That’s CC-PAOH01. Wiring and IOTAs are largely compatible between the two, but you won’t get HART configuration/status data on this part — only straight 4-20 mA current output.
Will swapping this module wipe my output configuration?
No. Range, scaling, and FAILOPT settings live in the Experion Control Builder database, not on the IOM itself. The controller re-downloads configuration to the replacement module.
Can I run this in a redundant pair?
Yes — pair it with CC-TAOX11 or CC-GAOX11 IOTAs for hot redundancy. Switchover gap is spec’d at 10 ms max, with no external cabling or redundancy controller needed; the IOTA handles it.
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 factory lead time; our test report and warranty stand in for the factory warranty.
What’s actually tested before this ships?
Power-on self-test, I/O Link communication handshake, full 16-channel output simulation across the 0–20 mA range with load resistance verification, and insulation resistance testing. Test photos/videos available on request.
