Product Overview

The GE Fanuc IC670ALG230 is an 8-point analog current source input module from the Field Control series. This module operates with a compatible Bus Interface Unit (BIU) for expansion. Engineers use the IC670ALG230 to interface field signal transmitters, panel meters, and VFDs. Its eight single-ended input channels accept 0-20 mA or 4-20 mA analog signals. This module suits applications that need accurate current measurement from industrial sensors.

Technical Specifications

The GE Fanuc IC670ALG230 delivers precise analog input conversion with robust isolation.

• Number of Channels: Eight (8) single-ended input channels.
• Input Signal Range: 0-20 mA or 4-20 mA (nominal), 0.0-25 mA absolute range.
• Input Impedance: 2.87 kiloohms (249.75 to 250.25 Ohms typical).
• Digital Resolution: 12 bits typical.
• Analog Resolution: 5.0 microAmps (µA).
• Conversion Time: 60 microseconds (µs) per channel at 1 MHz clock.
• Conversion Resolution: 12 bits.
• Input Current Span: 0.1 mA minimum to 20 mA maximum.
• Isolation (Channel to Case): 250 Volts AC continuous.
• Isolation (Ground to Logic): 1500 VAC for 1 minute; 250 VAC continuous.
• Maximum Error at 25°C: ±0.05% of full scale (0.1 < Input < 20mA).
• Non-linearity: ±0.025% of full scale.
• External Power Supply: 18-30 VDC (24 VDC nominal).
• Current from BIU: 100 mA (51 mA maximum drawn from BIU power supply).

Input Channel Features and Signal Compatibility

The GE Fanuc IC670ALG230 accepts input signals from many industrial devices. These devices include variable frequency drives (VFDs), data loggers, and signal splitters. The module also connects to panel meters and various types of field signal transmitters. Each channel supports single-ended wiring configuration for easy installation. All eight channels belong to a single input group for simplified wiring. The module has an analog resolution of 5.0 µA for fine current measurement. Digital resolution reaches 12 bits typical for accurate data representation. The IC670ALG230 accepts a minimum input current of 0.1 mA and a maximum of 20 mA. This wide range supports both 0-20 mA and 4-20 mA transmitter standards.

Analog to Digital Conversion and Filtering

This input module includes a built-in analog to digital converter (ADC) circuit. The ADC converts received analog signals to digital format for CPU processing. Conversion time reaches 60 µs per channel at the 1 MHz module clock. A 1st order RC input filter provides typical transition capacity of 160 Hz. This filter reduces high-frequency noise on the input signal. The GE Fanuc IC670ALG230 has non-linearity of only ±0.025% of full scale. Temperature coefficients are ±0.002% of value per degree C typical. Maximum temperature coefficient reaches ±0.005% of value per degree C. These specifications ensure stable readings across varying temperatures. The module includes open wire detection and over-range fault detection features.

Isolation and Protection Specifications

The GE Fanuc IC670ALG230 provides robust isolation for industrial safety. Isolation rating to case is 250 Volts AC continuous. Ground to logic isolation reaches 1500 VAC for 1 minute. The same ground to logic isolation holds 250 VAC for continuous operation. No isolation exists between individual points within the same group. Use a separate power supply when you need point-to-point isolation. The module draws 51 mA maximum from the BIU power supply. Typical current draw from the BIU power supply is 50 mA. Loop-powered transmitters should use the same power supply as the IC670ALG230. Proper grounding reduces noise immunity issues and provides stable signal commons.

LED Indicators and Status Monitoring

The GE Fanuc IC670ALG230 features LED indicators on the front panel. These LEDs show the operation status of the backplane connection. Separate LEDs indicate the field power status for the input channels. Output keying is available on this module for mixed inputs and outputs. This keying prevents incorrect module insertion in the field I/O system. The on-state voltage range is 15 to 30 Volts DC for valid signals. Off-state voltage range is 0 to 5 Volts DC for invalid or no signal. Power-on response time ranges between 25 and 60 microseconds. Power-off response time ranges between 100 and 150 microseconds. These fast response times suit time-critical control applications.

Installation and Environmental Guidelines

Mount the GE Fanuc IC670ALG230 in a dry, protected enclosure away from moisture. The module has an open enclosure design and is not waterproof. Operating temperature must stay between 0°C and 60°C (32°F to 140°F). Maximum non-condensing humidity reaches 95% for storage and operation. The module can run with a common power supply shared with the BIU. For isolation applications, use a separate power supply for the IC670ALG230. Proper grounding reduces noise and ensures accurate analog readings. Keep analog input wires away from high-voltage AC power cables. The module draws 100 mA current from the bus interface unit for operation.

Package Contents

When you unbox the GE Fanuc IC670ALG230, you will find these items:

• 1 x GE Fanuc IC670ALG230 analog current source input module.
• 1 x Terminal block for field wiring connections.
• 1 x Product label and identification tag.
• 1 x Quick reference installation guide.

Frequently Asked Questions (FAQ)

What types of signals does the IC670ALG230 accept?

The **IC670ALG230** accepts 0-20 mA and 4-20 mA analog current signals. The absolute input range is 0.0 to 25 mA for over-range detection.

How many channels does the GE Fanuc IC670ALG230 have?

This module has eight (8) single-ended input channels. All channels belong to a single group with no individual point isolation.

What is the conversion speed of the IC670ALG230?

The **IC670ALG230** has a conversion time of 60 microseconds per channel at 1 MHz. Total scan time for all 8 channels is 480 microseconds.

What isolation ratings does the IC670ALG230 provide?

Isolation to case is 250 VAC continuous. Isolation to ground is 1500 VAC for 1 minute and 250 VAC continuous. No isolation exists between individual channels.

Does the IC670ALG230 support open wire detection?

Yes, the **IC670ALG230** includes internal protection features such as open wire detection. It also provides over-range fault detection for input signals.