GE Fanuc IC697CPU780 CPU Module Redundant PLC

Product Introduction

The IC697CPU780 module functions as a single-slot Central Processing Unit for the GE Fanuc Series 90-70 platform. This processor module specifically targets hot-standby configurations. It eliminates downtime in critical applications by synchronizing seamlessly with a secondary CPU.

Should the primary unit fail, this module initiates an automatic, bumpless transfer of control to the backup unit. It features an embedded 80386DX microprocessor that operates at a clock speed of 16 MHz. Consequently, it delivers a swift Boolean execution speed of just 0.4 microseconds per function. This makes the IC697CPU780 perfectly suited for applications that demand high reliability and continuous operation.

Furthermore, the module supports up to 12 KB of discrete I/O and 8 KB of analog I/O. It also handles floating-point math and advanced instruction sets with ease. Therefore, this CPU provides a robust and powerful processing solution for complex automation tasks.

Technical Specifications

Processor & Memory

The heart of this module is a robust 80386DX microprocessor. It runs at a speedy 16 MHz. For memory, the IC697CPU780 can support up to 512 kilobytes of system RAM. This capacity is sufficient for managing extensive logic programs. You can choose from several memory configurations to fit your application needs. Options include 128 KB, 256 KB, or 256 KB with non-volatile flash. Finally, a lithium battery, specifically the IC697ACC701, retains program data and the real-time clock for up to six months. This battery offers a shelf life of ten years.

I/O Capabilities

This processor supports a significant number of I/O points. Specifically, it manages up to 12,000 discrete inputs and outputs. Additionally, it handles up to 8,000 analog I/O signals. This flexibility allows it to integrate into diverse and demanding industrial environments. It can manage a mix of digital and analog sensors and actuators.

Power & Communication

In terms of power, the IC697CPU780 draws 1.6 Amps of current at 5 Volts DC from the backplane. For connectivity, it includes a built-in RS-485 serial interface. This port uses a 15-pin D-connector. It primarily connects a programming computer to the PLC. This enables easy programming, monitoring, and troubleshooting.

Redundancy Features

This CPU excels in resilience. Its hot-standby capability includes automatic synchronization between the primary and secondary PLCs. Moreover, it supports online programming, which allows for repairs without stopping the system. The module also provides configurable backup data sizes and ensures communication integrity through memory parity and checksums. All these features work together to prevent a single point of failure in your control system.

Mechanical & Environmental Parameters

This module withstands typical industrial environments. However, install it inside a protected control cabinet. Ensure the operating temperature remains within 0°C to 60°C. Also, keep the relative humidity between 5% and 95% (non-condensing). The module conforms to the VME standard C.1. It fits into slot 1 of rack 0 in a Series 90-70 system.

Installation & Setup Guide

1. Rack Placement
First, install the IC697CPU780 module into slot 1 of rack 0. This is a fixed requirement for this processor module. Ensure the rack powers down properly before installation. Then, firmly slide the module into the chassis backplane.

2. Redundant Pair Configuration
Second, for a redundant setup, you need two of these CPU modules. Configure one as the primary CPU and the other as the secondary CPU. Use the programming software for this configuration. Bus transmitter modules and dedicated redundancy communication modules handle the communication between the two CPUs.

3. Serial Connection
Next, connect your programming terminal to the RS-485 port on the module. Use the 15-pin D-connector for this purpose. A standard programming cable is required for this step.

4. Power Up & Diagnostics
Finally, apply power to the system. Observe the front-panel LED indicators. These include Module OK, RUN, Outputs Enabled, and Memory Protect. You can use these lights to confirm the module's operational status. If the "Module OK" LED remains off, check the power connection and backplane.

Packaging List

• (1) x IC697CPU780 CPU Module

• (1) x IC697ACC701 Lithium Battery (Installed)

• (1) x Product Information Sheet

(Note: Cables, software, or programming manuals are not included. This package does not contain certificates or warranty documents.)

Frequently Asked Questions (FAQ)

1. Is the IC697CPU780 compatible with non-redundant systems?
Yes, it can function as a standalone CPU in a single PLC. However, its primary design and key advantage lie in hot-standby configurations. For non-critical applications, other CPU options might prove more cost-effective.

2. What happens if the primary CPU fails?
The IC697CPU780 system enables a bumpless switchover. The secondary CPU instantly takes over the control. This transition happens automatically without any interruption to the process. There is no downtime or loss of control.

3. How do I program this CPU?
You can program it using GE Fanuc's programming software. A connection is made via the RS-485 serial port. This port is located on the front of the module. You must use a compatible programming cable for the connection.

4. What is the function of the IC697ACC701 battery?
The battery powers the RAM memory when the PLC powers off. It preserves the program logic and the internal clock. It has a long lifespan. However, replace it every few years as a precaution.

5. What does the "Outputs Enabled" LED indicate?
This LED shows that the CPU allows output signals to reach the field devices. When this light is on, the outputs are active. Check this indicator before performing maintenance on connected equipment.