Description

The General Electric IC697ALG230 is an advanced high-level analog input base converter module designed specifically for the Series 90-70 programmable controller platform. This high-performance module features eight differential input channels that can be individually configured for either voltage or current signals. Integrated onboard load resistors support normal input current ranges up to 40 mA, while individual user scaling on each channel allows raw signals to be effortlessly translated into meaningful engineering units.

As the core component of a high-level analog subsystem, the IC697ALG230 communicates over the VME backplane and includes an expansion port capable of supporting up to seven daisy-chained expander modules (such as the IC697ALG440 or IC697ALG441). This scalable architecture permits a total subsystem capacity of up to 120 input points. Built-in optical isolation protects against transient and steady-state overvoltage conditions, ensuring reliable data acquisition in demanding industrial automation environments.

Features

• Equipped with 8 differential analog input channels individually configurable for voltage or current
• Accepts unipolar and bipolar voltage inputs up to plus or minus 10V full scale
• Supports 4 to 20 mA current loop signals via built-in 250-ohm precision shunt resistors
• Expansion bus interface supports up to 7 expander modules for a maximum capacity of 120 input points
• Individual user scaling and alarm comparator functions for each base channel
• Jumper-free and DIP-switch-free configuration utilizing MS-DOS or Windows-based programming software
• Front-panel BOARD OK and PORT OK status LEDs for real-time diagnostic monitoring

Applications

• Process control and monitoring systems requiring high-density analog data acquisition
• Heavy manufacturing automation utilizing Series 90-70 PLCs
• Multi-channel temperature, pressure, and flow rate measurement loops
• Industrial test stands and data logging infrastructure

Technical Specifications

Connections / Interfaces

• Removable 40-terminal field wiring connector block located on the front of the module
• Terminals 35 through 40 establish the analog expansion bus for daisy-chaining expander modules
• Dedicated screw terminals for signal inputs, channel commons (COM), and chassis ground shields (GND)
• Software-configured parameters via SNP port or Ethernet TCP/IP

Installation Guidelines

• Ensure all system power is turned off before removing or installing terminal boards or modules in the rack.
• Secure the detachable terminal board using the integrated front jackscrew; do not pull on the hinged door.
• Use twisted, shielded instrumentation wire (AWG 22 to AWG 14) for all analog field wiring to minimize noise interference.
• Maintain at least a 5-inch (127 mm) clearance above and below rack grill work to ensure adequate thermal ventilation.