Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE Intelligent Platforms / Emerson |
| Model | IC695CRU320CA-EL |
| Product Type | RX3i Redundancy CPU Module |
| Controller Platform | PACSystems RX3i |
| CPU Type | 1 GHz Celeron M Processor |
| User Memory | 64 MB battery-backed RAM |
| Flash Memory | 64 MB non-volatile flash |
| Redundancy Function | Hot Standby CPU Redundancy |
| Synchronization Module | IC695RMX128 / IC695RMX228 |
| Backplane Interface | RX3i Universal Backplane PCI Bus |
| Serial Ports | 1 × RS-232, 1 × RS-485 |
| Serial Protocols | SNP, Modbus RTU Slave, Serial I/O |
| Programming Languages | Ladder Diagram, Structured Text, Function Block Diagram, C |
| Program Blocks | Up to 512 blocks |
| Discrete Memory | Up to 32K bits for %I and %Q |
| Analog Memory | Up to 32K words for %AI and %AQ |
| Operating Temperature | 0°C to 60°C |
| Mounting | RX3i Universal Backplane |
| Application | High availability PLC control systems |
Product Introduction
GE IC695CRU320CA-EL Overview
The GE IC695CRU320CA-EL is a PACSystems RX3i redundancy CPU module designed for applications where continuous controller availability is required. It provides the processing engine for RX3i control systems while supporting hot standby redundancy through synchronization with a secondary CPU.
The GE IC695CRU320CA-EL operates as part of a redundant controller pair. Two matching CRU320 CPUs, combined with redundancy memory exchange modules, allow one controller to actively execute the application while the backup unit maintains synchronized control data and can assume control if the primary unit experiences a failure.
The GE IC695CRU320CA-EL is used in process control, power, manufacturing, and infrastructure systems where an unexpected PLC controller interruption can create significant operational impact. Replacement requires verification of firmware revision, redundancy configuration, RX3i rack compatibility, and application backup.
IC695CRU320CA-EL
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A critical process continues running, but the controller diagnostics show a CPU hardware warning. In a standard PLC system, replacing the processor may require a controlled shutdown. In a redundant RX3i architecture, the objective is to maintain operation while transferring control responsibility.
The IC695CRU320CA-EL is designed for these high-availability applications. The CPU is not only responsible for executing logic; it is also part of the synchronization mechanism between redundant controllers.
Typical Applications
Power Generation Systems
Used in turbine auxiliary controls, balance-of-plant systems, and electrical process automation where controller availability is important.
Process Industries
Applied in:
- Chemical processing units
- Refining systems
- Continuous production lines
- Utility control systems
Manufacturing Automation
Used for:
- Large assembly systems
- Material handling equipment
- Automated production cells requiring high uptime
Infrastructure Systems
Applied in:
- Water treatment facilities
- Energy management systems
- Transportation-related automation
Technical Pitfalls to Avoid
1. Confirm Redundancy Pair Compatibility
The CRU320 redundancy system requires matching CPU families. RX3i redundancy CPUs cannot synchronize with incompatible controller families such as RX7i redundancy units.
2. Verify RMX Redundancy Modules
A replacement CPU alone does not restore redundancy. The system requires compatible redundancy memory exchange modules such as IC695RMX128 or IC695RMX228 and correct link configuration.
3. Check Firmware and Project Compatibility
A replacement CPU may power up normally but fail synchronization if firmware versions, hardware configuration, or Proficy Machine Edition project settings do not match.
4. Verify Backplane Compatibility
The CRU320 must be installed in an RX3i Universal Backplane. Older Series 90-30 main racks are not compatible with RX3i CPUs.
Related Products
- GE IC695CRU320
Base catalog version of the RX3i redundancy CPU family. Provides the same hot standby controller functionality. - GE IC695RMX128
Redundancy Memory Xchange Module used to synchronize data between redundant RX3i CPUs. - GE IC695RMX228
Updated redundancy communication module used with RX3i and later PACSystems redundancy architectures. - GE IC695CPE330
RX3i CPU platform supporting redundancy configurations with RMX modules. - GE IC695CPE400
PACSystems RX3i controller family with integrated Ethernet-based redundancy features. - GE IC695CHS012-CA
RX3i Universal Backplane compatible with CRU320 installation requirements. - GE IC695PSA140
RX3i AC/DC power supply module commonly installed in CRU320 controller racks. - GE Proficy Machine Edition
Engineering software environment used for RX3i CPU programming, configuration, and diagnostics.
