Description
Product Model: IC695CRU320
Product Brand: General Electric (GE) / PACSystems
Product Series: RX3i Redundancy CPU Controllers
Product Features:
• Redundant central processing unit with hot-standby and bumpless switchover for continuous operation in mission-critical systems.
• 1 GHz Intel Celeron-M processor with 64 MB battery-backed RAM and 64 MB flash user memory.
• Dual communication interfaces including RS-232 and RS-485, with protocol support for Modbus, SNP, and more.
• Compatible with PACSystems RX3i backplanes and remote I/O, ideal for scalable automation architectures.
Technical Specifications
| Specification | Description |
|---|---|
| Device | IC695CRU320 |
| Manufacturer | General Electric (PACSystems) |
| Series | RX3i Redundancy CPU Controllers |
| Processor | 1 GHz Intel Celeron-M |
| User Memory | 64 MB battery-backed RAM |
| Flash Memory | 64 MB non-volatile flash |
| Communication Ports | RS-232, RS-485 |
| Protocol Support | Modbus RTU, SNP, Serial I/O |
| Backplane Bus | RX3i PCI & high-speed serial |
| Program Blocks | Up to 512 blocks (max 128 KB each) |
| Redundancy | Hot standby with synchronized memory |
| Operating Temperature | 0 °C to 60 °C |
| Power | +3.3 Vdc & +5 Vdc supply via backplane |
| Diagnostic Features | ECC and status LEDs |
| Mounting | RX3i universal rack backplane |
- IC695CRU320
- IC695CRU320
Product Role & System Fit
The IC695CRU320 is a redundancy-capable central processing unit (CPU) within GE’s PACSystems RX3i line of programmable automation controllers. Designed for environments where continuous uptime and fault tolerance are essential, it serves as the logical heart of a control system, orchestrating I/O, communication, and real-time control logic across distributed automation networks.
Unlike traditional controllers that risk a system shutdown when a single CPU fails, the IC695CRU320 supports hot-standby redundancy: an active controller runs the control cycle while one or more redundant units stand ready to take over seamlessly with minimal scan interruption. This feature — often configured with Memory Exchange modules and synchronized communications links — helps maintain continuous operations even under hardware faults.
This controller fits into a PACSystems RX3i backplane slot and communicates over dual backplane buses (PCI and high-speed serial), enabling robust interactions with I/O modules, communication gateways, and human-machine interfaces (HMIs). Its compatibility with legacy Series 90-30 expansion racks extends its utility in retrofit projects.
Engineers value the IC695CRU320 for its ability to handle complex logic tasks with redundancy while maintaining integration flexibility. Whether it’s linking remote I/O across the plant floor or ensuring that safety-critical loops don’t fail due to a CPU fault, this controller is built to execute deterministic control strategies with minimal risk of unscheduled downtime.




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