Description
Key Technical Specifications
- Product Type: High-Level Analog Input (HLAI) Module
- System Compatibility: Honeywell Experion C300 / C-Series DCS
- Channel Capacity: 16 Independent Input Channels
- Signal Type: High-Level Analog (Typically 4-20mA, 1-5V)
- Protocol Support: Non-HART (Standard Analog Only)
- Module Weight: ~2.5 kg
- Mounting Method: Field Installation / C-Series Backplane
- Associated Terminal Boards: CC-TAIX01 (Non-Redundant), CC-TAIX11 (Redundant)
- Associated FTA Boards: DC-TAIX51, DC-TAIX61
- Operating Temp: Industrial Grade (-20°C to +70°C typical)
- Protection Class: IP20 (Rack Mounted)
- Order Code: 51405038-275
Product Introduction
Process variables demand clean, reliable analog conversion. The Honeywell CC-PAIX01 is a 16-channel High-Level Analog Input (HLAI) module engineered specifically for the Experion C300 controller platform. It converts standard 4-20mA field signals into digital data for the DCS, serving as the primary interface for temperature, pressure, and flow transmitters. Honestly, if your C300 rack is showing channel faults or erratic readings, this module’s internal ADC or backplane connector is usually where the signal chain degrades.
Why keep using it? Because C300 system migrations cost hundreds of thousands. This module provides rock-solid analog acquisition without the overhead of HART communication, making it perfect for standard field devices. It pairs with specific IOTA terminal boards (like the CC-TAIX01) to handle field wiring and redundancy. Bottom line — it’s a 16-channel workhorse that keeps your process variables visible to the control room, and finding verified stock is becoming a critical supply chain concern.
Troubleshooting Quick Reference
- Fault: Single Channel Reading High/Low | Cause: Field Wiring / Sensor Failure | Relevancy: 85% | Quick Check: Measure 4-20mA at FTA terminal block | Fix: Check sensor power, verify loop resistance
- Fault: All Channels Faulted | Cause: Backplane Power / Seating Issue | Relevancy: 80% | Quick Check: Reseat CC-PAIX01, check backplane 5V/24V | Fix: Clean backplane contacts, verify PSU
- Fault: Intermittent Noise / Spikes | Cause: Ground Loop / Shielding | Relevancy: 75% | Quick Check: Measure AC voltage between signal ground and chassis | Fix: Verify single-point shield grounding at FTA
- Fault: Module Status LED Red | Cause: Internal Hardware Fault | Relevancy: 70% | Quick Check: Check C300 controller diagnostics for module fault code | Fix: Replace CC-PAIX01 if hardware fault confirmed
- Fault: HART Device Not Communicating | Cause: Wrong Module Type | Relevancy: 90% | Quick Check: Verify module label says “Non-HART” | Fix: Replace with CC-PAIH01 if HART is required

HONEYWELL CC-PAIX01
Application Scenarios & Pain Points
- Refinery Process Control: Thousands of standard 4-20mA pressure and temperature transmitters. The CC-PAIX01’s 16-channel density reduces backplane slot requirements, though you must ensure you don’t accidentally specify it for HART-enabled smart transmitters.
- Water Treatment SCADA: Distributed analog monitoring across remote pump stations. The module’s non-HART architecture simplifies configuration and eliminates HART polling latency for basic process variables.
- Legacy C300 Retrofits: Plants running 15-year-old Experion systems. Original HLAI modules are failing due to capacitor aging. A verified CC-PAIX01 prevents the nightmare of discovering a degraded ADC during a weekend outage.



