CC-GAIX21 | Honeywell | Low-Level Analog Input IOTA

Overview

The Honeywell CC-GAIX21 is a low-level analog input IOTA (Input/Output Termination Assembly) module designed for precise signal acquisition in Honeywell Experion Series C control systems. It supports both 2-wire and self-powered transmitters, enabling accurate measurement of current and voltage signals in process control environments. With HART-compatible functionality, high input impedance, and superior noise rejection, it provides reliable signal integrity even in electromagnetically harsh industrial conditions.

Technical Specifications

• Manufacturer: Honeywell

• Model/Part Number: CC-GAIX21

• Product Type: Analog Input IOTA Module

• System Compatibility: Honeywell Experion Series C

• Input Type: Voltage and current (2-wire or self-powered transmitters)

• Number of Channels: 16 total (12 single-ended, 4 differential)

• Input Ranges: 0–5 V, 1–5 V, 0.4–2 V, 4–20 mA (via 250 Ω resistor)

• A/D Converter Resolution: 16-bit

• Hardware Accuracy: ±0.075% of full scale at 23.5°C ±2°C; ±0.15% (0–60°C)

• Input Impedance: >10 MΩ (voltage input, powered)

• Input Scan Rate: 50 ms

• Common Mode Voltage: -6 to +5 V peak (DC to 60 Hz)

• Common Mode Rejection Ratio: 70 dB (DC to 60 Hz, 500 Ω imbalance)

• Normal Mode Rejection Ratio: 19 dB at 60 Hz

• Maximum Input (no damage): ±30 V differential

• Filter Response: Single-pole RC, -3 dB at 6.5 Hz

• Crosstalk: -60 dB (DC to 60 Hz, channel-to-channel)

• Power Supply: 24 VDC

• Operating Temperature: 0°C to 60°C

• Storage Temperature: -40°C to +85°C

• Country of Origin: United States

Features

• Multi-Channel Signal Processing: 16 analog channels with mixed single-ended and differential inputs.

• High Precision: 16-bit A/D conversion and ±0.075% accuracy ensure superior measurement quality.

• Noise Immunity: Excellent common and normal mode rejection reduces interference in process environments.

• Flexible Input Configuration: Supports voltage and current inputs, accommodating a wide range of sensors.

• Field Device Compatibility: Works with both 2-wire and self-powered transmitters.

• Reliable Isolation: Protects control hardware from overvoltage and signal cross-coupling.

• Compact Design: Optimized for Series C IOTA chassis, conserving panel space.

Applications

The Honeywell CC-GAIX21 module is ideal for precise measurement of analog process parameters such as temperature, flow, and pressure in distributed control systems. It is commonly deployed in industries including oil and gas, chemical processing, and power generation.

FAQ

Q: Can the CC-GAIX21 handle both voltage and current inputs?
A: Yes, it supports configurable input types, including voltage and 4–20 mA current loops.

Q: Is this module compatible with HART transmitters?
A: Yes, it can interface with HART-enabled devices through its analog input channels.

Q: What makes it suitable for low-level signal measurement?
A: Its high input impedance, low ripple, and 16-bit resolution ensure precise acquisition of weak analog signals