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SKU: IC697ALG230

GE Fanuc IC697ALG230 Series 90-70 High-Resolution Analog Input Base Module

The IC697ALG230 is a 14-bit high-resolution analog input base module for GE Fanuc Series 90-70 PLCs. It provides 8 differential channels supporting voltage and 4-20mA current signals. With opto-isolation, low-pass filtering, and expansion capacity for up to 120 channels, it ensures precise data acquisition for complex industrial systems.

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Advanced Signal Processing and Conversion

The IC697ALG230 serves as a high-performance analog input base module within the GE Fanuc (now Emerson) Series 90-70 PLC architecture. This module provides eight differential input channels, which engineers can independently configure to process various industrial signal types. By utilizing a high-precision 14-bit Analog-to-Digital Converter (ADC), the module transforms complex field signals into accurate digital data. This capability ensures that the central CPU receives precise information from critical sensors, regardless of whether the system monitors voltage or current loops.

Furthermore, the module enhances signal integrity through integrated hardware features. Each channel incorporates a dedicated low-pass filter to eliminate high-frequency noise and interference. To protect the sensitive logic of the PLC backplane, the IC697ALG230 employs opto-isolation circuitry. This barrier effectively shields the system from electromagnetic interference (EMI) and potential field-side voltage spikes, maintaining overall system stability in harsh industrial environments.

Scalability and Expansion Options

A primary benefit of the IC697ALG230 is its expansive scalability. While the base module handles eight channels, it acts as a foundation for additional expansion. Users can link up to seven expansion modules, such as the IC697ALG440 (voltage) or IC697ALG441 (current) expanders, to a single base. Consequently, a fully populated system can manage up to 120 analog input channels. This modular design allows facilities to scale their automation capabilities without requiring additional high-cost base converters or CPU overhead.

Technical Performance and Connectivity

  • Input Configuration: 8 differential channels, expandable to 120 channels via sub-modules.
  • Resolution: 14-bit resolution for precise signal mapping.
  • Input Ranges: Supports standard ±10 VDC voltage and 4-20 mA current loops.
  • Isolation Protection: 1500 VDC opto-isolation between field wiring and the backplane.
  • Filtering: Individual per-channel hardware low-pass filters for noise reduction.
  • Wiring Interface: Features a removable 40-terminal connector block for simplified maintenance and #22 to #14 AWG wire compatibility.
  • Power Requirements: Consumes 1.2 Amps from the 5V backplane bus.
  • Configuration: Software-programmable parameters via MS-DOS or Windows-based logic developer tools.

Industrial Implementation

Industrial operators frequently deploy the IC697ALG230 in applications requiring high-density analog monitoring, such as chemical processing, power generation, and sophisticated HVAC control. Because it utilizes differential wiring, the module excels at rejecting common-mode noise, making it ideal for long-distance sensor runs. Additionally, the ability to mix voltage and current inputs across different expansion modules provides the flexibility needed for multifaceted automation tasks. Therefore, this module remains a vital asset for maintaining the high-accuracy data acquisition standards of the Series 90-70 platform.

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