GE IC694ALG223 Product Overview
The GE IC694ALG223 is a high-density analog input module designed for the RX3i Programmable Automation Controller (PAC) platform, formerly manufactured by GE Fanuc and now under Emerson Automation. This module offers sixteen single-ended analog input channels, each configurable for 0-20 mA, 4-20 mA (standard), or 4-20 mA (enhanced) input signals. It provides 12-bit resolution and a channel update rate of 13 milliseconds, making it a reliable choice for precise current measurement in industrial automation systems.
Key Features and Specifications
High-Density Input Channels: With sixteen single-ended inputs, the IC694ALG223 maximizes I/O density in a single slot of any PACSystems RX3i chassis. It supports both local and distributed I/O configurations for RX3i and RX7i controller platforms.
Configurable Input Ranges: Each channel can be set for 0-20 mA, 4-20 mA (normal), or 4-20 mA (enhanced) via configuration software. The enhanced 4-20 mA range enables open-wire fault detection, a critical feature for monitoring analog sensors in industrial environments.
Resolution and Accuracy: The analog-to-digital converter (ADC) provides 12-bit resolution. For the 4-20 mA range, resolution is 4 µA per bit; for 0-20 mA and enhanced 4-20 mA, it is 5 µA per bit. Accuracy is ±0.25% of full scale at 25°C and ±0.5% over the operating temperature range (0 to 60°C).
Power and Diagnostics: The module draws 120 mA from the 5 VDC bus and an additional 65 mA from an external 24 VDC supply for current loops. It provides power supply status and module status updates to the CPU, along with configurable high/low alarm thresholds for all input ranges.
Applications and Use Cases
The IC694ALG223 is ideal for interfacing with transmitters, transducers, isolators, and similar analog signaling devices. Its open-wire detection and alarm capabilities make it suitable for critical process monitoring, such as in chemical plants, water treatment facilities, and manufacturing lines where 4-20 mA loop-powered sensors are common.
The input impedance of 250 ohms and a low-pass filter response of 19 Hz ensure stable signal acquisition. The module's external supply range (20-30 VDC) offers flexibility for various field power configurations.
Compatibility and Installation
This module occupies a single slot in any RX3i or Series 90-30 PLC chassis with a serial connector. It can be used as local or distributed I/O, supporting both RX3i and RX7i controllers. Configuration is performed using GE's programming software, allowing easy setup of input ranges, alarms, and calibration parameters.
Conclusion
The GE IC694ALG223 delivers robust performance for analog current input applications. With 16 channels, 12-bit resolution, and flexible range options, it offers a cost-effective solution for high-density analog monitoring. Its active lifecycle status ensures long-term availability and support from Emerson Automation. For detailed specifications and purchasing options, visit PLC Source PRO.