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Honeywell CC-PAIX01 Experion PKS Analog Input Module

The Honeywell CC-PAIX01, also cataloged as the 51405038-275 spare module, operates as a dedicated hardware component for 4-20 mA analog signal acquisition with HART pass-through communication within the Experion PKS C300 controller platform.

Hardware Specifications

Parameter	Specification
Model Number	CC-PAIX01
Spare Model	51405038-275
Brand	Honeywell
Module Type	High-Level Analog Input (HLAI) with HART
Number of Channels	16 Channels (Single-ended)
Input Signal Range	4 to 20 mA (or 1 to 5 VDC)
Digital Communication	HART Protocol (Version 5, 6, and 7 compatible)
Resolution	16-bit ADC
Accuracy	+/- 0.1% of full scale (at 25 deg C)
Input Impedance	250 Ohm (Nominal)
Galvanic Isolation	Channel-to-system and channel-to-frame
Coating	Conformal Coated PWA (ISA G3 compliant)
Power Consumption	5.5W to 6.0W (max)
Operating Temperature	0 deg C to 60 deg C
Storage Temperature	-40 deg C to 85 deg C
Relative Humidity	5% to 95% RH (non-condensing)
Dimensions	5.5 x 16 x 14.5 cm
Weight	0.4 kg
Origin	USA

HART Loop Communication and Signal Conditioning

The CC-PAIX01 integrates HART digital communication directly onto the 4-20 mA current loop without disrupting the primary analog signal. The module operates as a HART master on the loop, enabling bi-directional digital data exchange with field transmitters at 1200 bps using Frequency Shift Keying (FSK) modulation superimposed on the DC analog current. The 250 Ohm input impedance provides the necessary load resistance for HART signal detection. The module supports universal HART commands (Common Practice commands) and device-specific commands, allowing the Experion PKS system to perform remote calibration, diagnostics, and parameter adjustments on smart field instruments. Channel-to-system galvanic isolation prevents ground loop currents and suppresses common-mode noise, maintaining signal integrity in electrically noisy environments. The conformal coating on the PWA (Printed Wiring Assembly) provides a protective dielectric layer that prevents moisture ingress and chemical contamination from degrading the circuit paths, extending operational life in G3 harsh environment classifications.

Frequently Asked Questions

Q: Can the CC-PAIX01 be hot-swapped while the C300 controller is online?

A: Yes. The module is designed for online insertion and removal. The system detects the module change and resumes normal operation once the new module is seated and recognized by the backplane. No interruption to other I/O modules occurs during this process.

Q: What is the difference between the CC-TAIX01 and CC-TAIX11 termination assemblies?

A: The CC-TAIX01 is a non-redundant IOTA supporting standard 24 VDC loop power for 2-wire transmitters. The CC-TAIX11 is the redundant version, providing dual-power feed capability and redundant wiring paths for critical loop configurations requiring high availability.

Q: Does the CC-PAIX01 support both 2-wire and 4-wire transmitter configurations?

A: Yes. The module supports both configurations depending on the IOTA wiring arrangement. For 2-wire transmitters, loop power is supplied through the IOTA from the external 24 VDC supply. For 4-wire transmitters, the module receives an active current source and the IOTA wiring is adjusted accordingly.

Field Installation Guidelines

Mount the CC-PAIX01 vertically onto the designated Series C I/O termination assembly (IOTA). Verify that the IOTA type (CC-TAIX01 or CC-TAIX11) matches the redundancy requirements of the loop design. Before connecting field wiring, confirm that the external 24 VDC power supply is properly distributed through the IOTA and that loop polarity is observed. Use shielded twisted-pair cabling for all analog input signals; connect the shield drain wire to the ground reference at the IOTA termination point only (single-point ground). Do not apply power to the module until all field wiring connections are verified. After installation, use the Experion PKS engineering workstation to validate HART communication by polling connected devices and confirming digital signal strength levels.

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