IC697CPM790 GE Fanuc 80486DX2 Controller TMR Function

Product Overview

The GE Fanuc IC697CPM790 is a premier central processing module within the Series 90-70 family, engineered for high-availability control systems. It is uniquely capable of supporting Triple Modular Redundancy (TMR), providing a system fault tolerance of 99.9% for critical infrastructure. This controller utilizes a powerful 64 MHz 80486DX2 microprocessor to manage complex logic and high-speed data acquisition. Occupying only one installation slot, it provides a compact yet robust solution for large-scale automation architectures.

Core Technical Performance

Performance efficiency is a hallmark of the IC697CPM790, featuring a Boolean execution speed of 0.4 microseconds per function. With a 256 KB data handling capacity, it manages extensive I/O configurations and sophisticated user programs with ease. The module includes four LED indicators for immediate visual diagnostics of the CPU status and two integrated serial ports for seamless communication with programming terminals or peripheral devices. It operates on a standard 24V DC input voltage with a ± 20% tolerance, ensuring stability across varying power conditions.

Physical Characteristics & Weight

Designed for dense industrial cabinets, the IC697CPM790 maintains a streamlined physical profile with dimensions of 21 cm x 23 cm x 5 cm. The module is lightweight for its class, weighing only 0.6 kg (approx. 1.32 lbs), which minimizes the mechanical stress on the backplane during high-vibration operations. Its rugged construction allows for a wide operating temperature range of -20°C to 60°C, making it suitable for unconditioned industrial environments.

Technical Specifications

Redundancy & Reliability

The primary advantage of the IC697CPM790 is its native support for TMR. In this configuration, three synchronized CPUs process the same data simultaneously, using a "voting" mechanism to ensure that a single point of failure cannot bring down the entire system. This hardware-based redundancy, combined with a 99.9% system fault tolerance, makes it a preferred choice for safety-instrumented systems (SIS) and high-value continuous processes where downtime is economically prohibitive.

Technical FAQs

Q1: What is the benefit of the 80486DX2 processor in this module?
A1: The 64 MHz 80486DX2 offers a significant boost in floating-point calculations and complex instruction processing compared to earlier Series 90-70 CPUs, enabling faster scan times for large programs.

Q2: How many serial ports are available for peripheral connection?
A2: This module features two integrated serial ports, typically used for SNP/SNP-X master/slave communications, programming, or interfacing with HMI units.

Q3: Does the IC697CPM790 require a specific power supply?
A3: It operates within a voltage range of 24V DC ± 20% and is compatible with standard Series 90-70 rack-mount power supply modules.