Product Core Brief

• Model: 8421-CC-PS
• Brand: GE
• Series: PACSystems RXmc
• Core Function: High-performance CPU module for the PACSystems RXmc controller family, providing central processing, program execution, and I/O coordination for industrial control applications.
• Product Type: Controller CPU Module
• Key Specs: PowerPC 604e 800 MHz | 128 MB RAM | 2 MB flash | CoDeSys / IEC 61131-3 programming | IP65-rated platform support | CE/CSA certified
• Condition: New Original / New Surplus

Key Technical Specifications

• Part Number: 8421-CC-PS
• Product Family: GE PACSystems RXmc
• Processor: PowerPC 604e
• Clock Speed: 800 MHz
• Memory: 128 MB RAM
• Storage: 2 MB flash
• Programming Support: CoDeSys, Structured Text, IEC 61131-3 languages
• I/O Expansion: Supports multiple PACSystems RXmc extension modules
• Operating Temperature: -25°C to +55°C
• Protection Rating: IP65 (system/platform dependent)
• Certifications: CE, CSA
• Typical Applications: Industrial process control, machine control, discrete automation, and PACSystems RXmc-based control systems

Product Introduction (No Fluff)

The GE 8421-CC-PS is a CPU module for the PACSystems RXmc controller family. It uses a PowerPC 604e processor running at 800 MHz with 128 MB of RAM and 2 MB of flash storage, providing the central processing capability required for program execution, I/O handling, and system diagnostics.

This module supports IEC 61131-3 programming environments including CoDeSys and Structured Text, and it can be extended with compatible RXmc I/O modules. It is designed for industrial control applications that require reliable real-time processing, diagnostic visibility, and modular system expansion. Because it belongs to the PACSystems RXmc platform, it must be installed and configured within compatible RXmc hardware and software environments.

QA & Testing SOP (Dynamic & Transparent)

For a controller CPU module, we verify identification, physical condition, connector integrity, and basic readiness before release.

• Part number verification: Confirm 8421-CC-PS on the module label. Record revision, serial number, and firmware/version information where available.
• Visual inspection: Check the module housing, connectors, LEDs, PCB, and mounting hardware for corrosion, burn marks, cracked components, or mechanical stress.
• Connector inspection: Verify backplane, communication, and I/O interface connectors for bent pins, contamination, or poor contact.
• Firmware and configuration check: Where possible, confirm firmware version and export existing configuration data for traceability.
• Power-up check: If a compatible RXmc test setup is available, verify power-up status, LED indicators, and basic communication readiness.
• Memory and diagnostics check: Confirm the module reports normal memory status and no critical diagnostic faults.
• ESD-safe packaging: Ship in anti-static bags with foam protection. Include part number, revision, and inspection status on the shipping label.

Installation Pitfalls & Guide (Engineer to Engineer)

❗ Verify platform compatibility. The 8421-CC-PS belongs to the PACSystems RXmc family. Do not install it in unrelated GE controller families without confirming mechanical, electrical, and firmware compatibility.

❗ Back up configuration before replacement. Export the existing program, I/O mapping, network settings, and diagnostic logs before removing the CPU module.

❗ Do not assume firmware compatibility. Firmware differences between old and replacement CPUs can affect program execution, I/O behavior, and communication settings.

❗ Follow safe replacement procedures. Removing or inserting a CPU module while the system is online may cause process interruption, I/O faults, or unexpected machine behavior.

❗ Confirm I/O and network settings after installation. After replacement, verify I/O module recognition, communication interfaces, IP addresses, and program download readiness.

Replacement steps:

1. Pre-install: Back up the controller program, record I/O assignments, network parameters, and firmware version.
2. Isolate: Follow plant procedures to place the system in a safe state before removing the CPU.
3. Remove: Disconnect communication cables and remove the CPU module without forcing connectors.
4. Install: Seat the replacement 8421-CC-PS firmly, restore communication and power connections, and verify module status.
5. Commission: Download the verified program, confirm I/O communication, test critical interlocks, and perform controlled functional checks before returning to service.

Technical FAQ

What is the 8421-CC-PS?
It is a PACSystems RXmc CPU module that provides central processing, program execution, and I/O coordination for GE PACSystems RXmc control systems.

What processor and memory does it use?
It uses a PowerPC 604e processor at 800 MHz, with 128 MB RAM and 2 MB flash storage.

What programming software does it support?
It supports IEC 61131-3 programming environments, including CoDeSys and Structured Text.

Can it be used in other GE controller families?
No. It is specific to the PACSystems RXmc platform. Compatibility must be verified against the installed RXmc hardware and software configuration.

Is this module still in production?
Public listings indicate this product is associated with legacy PACSystems RXmc hardware. Current availability is typically through surplus stock, spare parts channels, or system replacement projects.