Overview

The IC670ALG230 from GE Fanuc is an 8-channel analog current input module designed to handle a variety of field signal sources. This module is part of the Field I/O control product series and is used for precise signal processing in industrial automation and control systems.

Features

• 8 Single-Ended Input Channels: Supports 0-20 mA and 4-20 mA input signals
• High Precision: 5.0 µA analog resolution and 12-bit digital resolution
• Fast Conversion Time: 60 µs per channel (typical)
• Built-In Protection: Open wire detection and over-range fault detection
• Wide Isolation: 1500 VAC for ground-to-logic isolation
• Low Power Consumption: Current draw of 51 mA maximum from the Bus Interface Unit (BIU)
• Compact and Efficient: Ideal for use with loop-powered transmitters and other field devices

Technical Specifications

Electrical Characteristics

• Nominal Supply Voltage: 24 VDC
• Input Range: 0.0-25 mA
• Input Impedance: 2.87 kΩ
• Input Current Span: 0.1 mA minimum to 20 mA maximum
• On-State Voltage: 15–30 VDC
• Off-State Voltage: 0-5 VDC

Signal Processing

• Analog Resolution: 5.0 µA
• Digital Resolution: 12 bits
• Conversion Time: 60 µs per channel (at 1 MHz clock)
• Non-linearity: ±0.025% of full scale
• Temperature Coefficients:
  • Typical: ±0.002% per °C
  • Maximum: ±0.005% per °C

Protection and Isolation

• Ground to Logic Isolation: 1500 VAC for 1 minute
• Isolation to Case: 250 VAC continuous
• Isolation between Channels: No isolation between individual points in a group

Power Requirements

• External Power Supply: 18-30 VDC
• Maximum Current from BIU: 100 mA
• Nominal Current Draw: 50 mA (typical), 210 mA (maximum including loop power)

Environmental Conditions

• Operating Temperature: 0°C to 60°C
• Storage Temperature: -40°C to 85°C
• Humidity: 5% to 95% non-condensing
• Vibration: 0.5 mm at 58 to 62 Hz, 20 m/s²

Additional Information

• Wiring Configuration: Single-ended
• Response Time:
  • On: 25-60 µs
  • Off: 100-150 µs