Honeywell CC-GAIX21 Analog Input Module

Core Functionality and System Role

The Honeywell CC-GAIX21 analog input module acquires high-level analog signals from field transmitters for the Experion PKS C300 control system. This module supports both voltage and current inputs from 2-wire or self-powered transmitters . It provides a reliable interface between smart field devices and the control system, ensuring accurate process monitoring and control . Furthermore, the module supports both Galvanically Isolated (GI) and Intrinsically Safe (IS) applications in hazardous environments .

Technical Specifications

The following table details the core technical parameters for the Honeywell CC-GAIX21:

Parameter	Specification
Model Number	CC-GAIX21
Product Type	Analog Input GI/IS IOTA Module
System Compatibility	Experion PKS C300, Series C
Input Channels	16 (12 single-ended, 4 differential)
Input Types	Voltage: 0-5V, 1-5V, 0.4-2V; Current: 4-20mA (via 250Ω)
A/D Converter Resolution	16-bit
Hardware Accuracy	±0.075% FS @ 23.5°C; ±0.15% FS (0-60°C)
CMRR	70 dB (DC to 60 Hz, 500Ω imbalance)
Input Impedance	>10 MΩ (voltage inputs, powered)
Input Scan Rate	50 ms
Max Current Consumption	60 mA at 24 VDC
Power Dissipation	0.7 W at 24 VDC
Dimensions (W × H × D)	3.2 cm × 12.7 cm × 12.7 cm
Weight	0.2-0.38 kg (variant dependent)
Operating Temperature	0°C to 60°C (standard); -40°C to +85°C (extended)
Storage Temperature	-40°C to +85°C
Redundancy	Non-redundant design

Design and Protection Features

The Honeywell CC-GAIX21 features galvanic isolation between channels and the system backplane, which protects control hardware from overvoltage . High input impedance and 16-bit resolution ensure precise acquisition of weak analog signals . The module also offers excellent common and normal mode rejection, which reduces interference in electromagnetically harsh environments . In addition, it supports HART-compatible devices, enabling smart transmitter communication and diagnostics .

System Compatibility and Use Cases

The Honeywell CC-GAIX21 integrates with Experion PKS C300 controllers and Series C IOTA terminal assemblies . It suits applications in oil and gas, chemical processing, and power generation facilities . The module’s GI/IS design makes it ideal for hazardous area installations requiring intrinsic safety . Users should verify that their system runs Experion PKS firmware version 4.0 or above for full compatibility .