General Electric IC697ALG230 Series 90-70 Analog Input Base Converter Module

Description

The General Electric IC697ALG230 is an eight-channel high-level analog input base converter module designed for the Series 90-70 programmable logic controller platform. Serving as the primary interface in a high-level analog input subsystem, this module processes unipolar and bipolar signals—including standard ranges up to plus or minus 10 VDC and 4 to 20 mA current loops—converting them via a 14-bit A/D core into 16-bit signed integer values for the VME backplane CPU.

Equipped with differential inputs and on-board load resistors, the IC697ALG230 provides superior common-mode noise rejection and supports individual channel user scaling without the need for physical jumpers or DIP switches. It acts as the master controller for up to seven daisy-chained expander modules, allowing scalable system configurations of up to 120 total analog inputs within the PLC rack architecture.

Features

• Features 8 differential input channels individually configurable for voltage or current measurements
• Supports unipolar and bipolar inputs up to plus or minus 10 VDC and 4 to 20 mA loops
• Provides 14-bit basic A/D resolution enhanced via oversampling and averaging techniques
• Jumperless configuration managed entirely through programming software utilities
• Supports expansion bus architecture to interface up to 7 expander modules for a 120-input maximum subsystem
• Integrated diagnostic features including overrange, underrange, open-wire, and alarm comparator functions

Applications

• High-density analog sensor signal conditioning in industrial control loops
• Remote rack analog data acquisition expansion for Series 90-70 automation systems
• Precision closed-loop process variable monitoring and threshold alarm processing
• Multi-channel voltage and current telemetry integration in heavy industrial environments

Technical Specifications

Connections / Interfaces

• Removable 40-terminal front-mount connector block for field instrumentation wiring
• Terminals 35 through 40 dedicated to the analog expansion bus for daisy-chaining expander modules
• Physical mechanical keying system to prevent incorrect module insertion in rack slots

Compliance and Certifications

• Designed to meet applicable Series 90-70 system standards
• CE compliant for industrial electromagnetic compatibility
• UL listed industrial control equipment