Introduction

The GE IC694ALG223 RX3i Analog Current Input Module is a high-density analog acquisition solution designed for GE Fanuc PACSystems RX3i automation platforms. With 16 configurable single-ended current input channels, it provides accurate conversion of industrial 4–20 mA and 0–20 mA signals into digital values for advanced process control.

Built for demanding industrial environments, the IC694ALG223 combines flexible signal configuration, fast data updating, and integrated diagnostic capabilities. Its ability to handle multiple transmitter inputs within a single module makes it an efficient choice for applications requiring compact yet powerful analog monitoring.

From continuous process industries to machine automation systems, this module provides dependable signal acquisition and seamless integration with RX3i control architectures.

Technical Specifications

Specification	Description
Manufacturer	GE Fanuc / Emerson
Model	IC694ALG223
Product Type	Analog Current Input Module
Product Family	PACSystems RX3i
Number of Inputs	16 Single-Ended Channels
Input Signal Type	Analog Current Input
Supported Ranges	0–20 mA, 4–20 mA, 4–20 mA Enhanced
Resolution	12 Bit
Update Rate	13 ms (All 16 Channels)
Input Resolution	4 µA/bit (4–20 mA), 5 µA/bit (0–20 mA)
Accuracy	±0.25% Full Scale at 25°C
Temperature Accuracy	±0.5% Full Scale Over Operating Range
Input Impedance	250 Ω
Input Filter Response	19 Hz
Isolation	Optical Field-to-Backplane Isolation
Isolation Rating	250 VAC Continuous / 1500 VAC for 1 Minute
Cross Channel Rejection	>80 dB
External Supply Voltage	20–30 VDC
Backplane Current Consumption	120 mA @ 5 VDC
External Current Consumption	65 mA @ 24 VDC
Mounting Type	RX3i Universal Backplane
Operating Temperature	0°C to +60°C
Dimensions	Approx. 130 × 35 × 125 mm
Weight	Approx. 0.51 kg

Recommended Companion Models

Model	Product Name
IC695CPU310	PACSystems RX3i CPU Module
IC695PWR330	PACSystems RX3i Power Supply Module
IC695CHS012	PACSystems RX3i 12-Slot Universal Backplane
IC694MDL645	RX3i / Series 90-30 24 VDC Input Module

Frequently Selected Alternatives

Model	Product Name
IC694ALG221	RX3i Analog Voltage Input Module
IC694ALG222	RX3i Analog Current Input Module
IC694ALG392	RX3i Analog Current/Voltage Output Module
IC200ALG264H	VersaMax 15-Channel Analog Current Input Module

Where It Excels in Industrial Use

GE PACSystems RX3i process automation systems
High-density analog signal acquisition applications
Industrial transmitter monitoring systems
Flow, pressure, level, and temperature measurement
Chemical and pharmaceutical process control
Water treatment and energy management systems
Manufacturing equipment requiring current-loop monitoring
SCADA and distributed control applications
OEM automation systems with multiple analog instruments
RX3i system expansion and modernization projects

Key Strengths at a Glance

16-channel single-ended analog current input capability
Supports 0–20 mA and 4–20 mA signal ranges
Individual channel configuration flexibility
12-bit analog conversion resolution
Fast 13 ms update rate for all 16 channels
Optical isolation between field signals and backplane
Built-in high and low alarm configuration
Supports open-wire detection in enhanced 4–20 mA mode
External 24 VDC field supply monitoring
Designed for reliable RX3i industrial process applications

Technical FAQs

1. What is the primary function of the GE IC694ALG223?

The IC694ALG223 is a PACSystems RX3i analog current input module designed to convert industrial current-loop signals into digital data for PLC processing. It provides up to 16 single-ended analog input channels.

2. How many analog input channels are available?

The module provides 16 single-ended analog input channels, with each channel configurable independently according to application requirements.

3. Which input current ranges are supported?

The IC694ALG223 supports 0–20 mA, 4–20 mA, and 4–20 mA Enhanced input ranges, selectable through configuration software.

4. What type of industrial devices can be connected?

Typical devices include pressure transmitters, flow meters, level sensors, process analyzers, and other field instruments that provide standard current-loop signals.

5. Does the module provide channel isolation?

The module provides optical isolation between the field side, backplane, and frame ground. However, the individual input channels share a common reference and are not isolated from each other.

6. What resolution does the IC694ALG223 provide?

The module provides 12-bit analog conversion performance, with approximately 4 µA per count on the 4–20 mA range and 5 µA per count on the 0–20 mA and enhanced ranges.

7. Does the module support alarm monitoring?

Yes. High and low alarm thresholds can be configured for all supported input ranges, allowing the PLC system to respond to abnormal process conditions.

8. How does the enhanced 4–20 mA mode improve diagnostics?

The enhanced 4–20 mA range allows detection of low-current conditions below normal loop operation, helping identify open-wire faults in current-loop applications.