GE IC697CPX928-FE Series 90-70 PLC CPU Module

Description

Product Introduction

The GE IC697CPX928-FE is a high-performance CPU module designed for the GE Fanuc Series 90-70 PLC platform. It serves as the primary controller, executing user programs, managing local and remote I/O, and coordinating communication with HMIs, SCADA systems, and engineering workstations.

Compared with earlier Series 90-70 processors, the IC697CPX928-FE offers a 96 MHz processor, expanded memory, and floating-point capability. These improvements make it well suited for larger control strategies, complex sequencing, PID control, and process applications where scan time and memory utilization directly affect plant performance.

Key Technical Specifications

IC697CPX928-FE

IC697CPX928-FE

Application Scenarios & The “Trench” Experience

Here’s a situation many maintenance engineers know well.

A production line suddenly begins stopping at random intervals. Diagnostics show the I/O racks are healthy. The power supply checks out. The network is stable. The problem ends up being a CPU that intermittently loses battery-backed memory after every shutdown. Everything looks normal until the next restart.

Replacing only the processor often restores the entire control system without touching field wiring or I/O modules.

Typical Applications

• Power Generation – Boiler and turbine auxiliary control where large I/O counts and deterministic logic execution are required.
• Oil & Gas – Compressor stations managing distributed analog instrumentation and safety interlocks.
• Chemical Processing – Batch reactors requiring floating-point calculations and multiple PID loops.
• Automotive Manufacturing – High-density assembly lines coordinating conveyors, robots, and operator stations.
• Water Treatment – Plant-wide pump sequencing with remote I/O and SCADA integration.

Field Experience

One paper mill had experienced repeated CPU memory checksum alarms during planned maintenance shutdowns. The original battery had already been replaced twice, but the issue continued.

The replacement IC697CPX928-FE solved the problem immediately. The original CPU had developed unstable memory retention after years of continuous operation. Replacing only the processor avoided a complete migration project that would have required several days of production downtime.

Transparency SOP: Quality Assurance & Testing

We don’t just ship boxes; we test them on actual GE Series 90-70 racks whenever possible.

• Inbound Inspection
  • Verify catalog number, hardware revision, labels, and PCB condition.
  • Check for previous repairs, corrosion, or damaged connectors.
  • Screen for counterfeit markings.
• Live Rack Testing
  • Install the CPU in a powered Series 90-70 chassis.
  • Confirm successful boot sequence.
  • Verify memory retention.
  • Execute diagnostic routines and I/O communication tests.
• Electrical Verification
  • Measure backplane current consumption.
  • Verify serial communication ports.
  • Confirm stable operation under continuous runtime.
• Firmware Verification
  • Record firmware revision.
  • Verify compatibility with supported Series 90-70 releases.
  • Confirm successful program download and execution.
• Final Quality Control
  • Perform final visual inspection.
  • Clean connectors.
  • Package in anti-static materials with impact protection.
  • Record serial number for traceability.

The Veteran’s Tech Trap Guide

⚠️ Replace the battery before startup.

Installing an old battery into a replacement CPU is asking for trouble. Memory loss usually shows up during the next power outage—not during commissioning.

❗Check firmware compatibility first.

Older Genius networks and communication modules may require minimum CPU firmware revisions. A processor swap isn’t always plug-and-play. Verify the firmware matrix before installation.

⚠️ Don’t copy hardware configuration blindly.

If the rack configuration doesn’t match the installed hardware, you’ll spend hours chasing I/O faults that have nothing to do with the CPU.

❗Inspect the backplane connectors.

A surprising number of “failed CPUs” are actually oxidized rack connectors or bent guide rails. Clean and inspect the rack before condemning the processor.

Frequently Asked Questions (FAQ)

Q1. Does the support hot swapping?

No. Remove rack power before replacing the CPU. Pulling the processor under power can corrupt memory and may damage the backplane.

Q2. What programming software supports this CPU?

It supports GE Fanuc programming software such as Logicmaster 90 and later Windows-based programming environments compatible with the Series 90-70 platform.

Q3. Can this CPU control remote Genius I/O?

Yes. The processor supports both IC697 local I/O and IC660/IC661 Genius I/O when installed with the appropriate communication modules and system configuration.

Q4. Can I restore my PLC program after replacing the CPU?

Yes, provided you have a valid backup and the battery-backed memory or Flash memory has been properly maintained. Always verify hardware configuration before downloading the application.

Q5. What warranty is typically available?

Most professionally tested New Surplus or refurbished CPUs are supplied with a 12-month warranty covering functional defects under normal operating conditions.

Q6. Why is this CPU less expensive than purchasing directly from the OEM?

The Series 90-70 platform has been discontinued for years. Available inventory comes from unused surplus stock, strategic inventory reserves, or professionally refurbished equipment. The lower price reflects the sourcing channel rather than reduced functionality.

Q7. Is this an original GE product or a third-party replacement?

The is an original GE Fanuc hardware platform. Depending on inventory, available units may be New Surplus (unused legacy stock) or professionally refurbished. Always request functional test records, firmware revision details, and photographs of the actual module before purchasing.