GE IC695CRU320CA-EL PACSystems RX3i Redundancy CPU

Key Technical Specifications

Typical Redundancy Features

• Automatic CPU failover
• Continuous memory synchronization
• Online maintenance support
• Background diagnostics
• One-scan bumpless switchover
• Dual redundancy communication links

Product Introduction & Supply Chain Strategy

The GE IC695CRU320CA-EL is a high-availability Redundancy CPU designed for the PACSystems RX3i PLC platform. Installed as a matched pair, it enables hot standby operation by continuously synchronizing program execution, process data, and I/O status between the active and standby controllers. If the active CPU fails, the standby CPU automatically assumes control with minimal interruption to the process.

From an inventory perspective, redundant CPUs are among the highest criticality automation components because a failure can compromise plant availability. Maintaining 1–2 New Surplus units on-site minimizes lead time variability, lowers Total Cost of Ownership (TCO), and avoids the reliability risks associated with refurbished processor modules. For long-life RX3i installations, vendor consolidation and a planned last-time-buy strategy are recommended.

Installation & Configuration Guide

Stage 1 – Pre-Installation (Preparation & Safety)

1. Perform Lock-Out/Tag-Out (LOTO).
2. Back up the complete PLC project using Proficy Machine Edition.
3. Record:
   • CPU firmware revision
   • Hardware configuration
   • Ethernet addresses
   • Redundancy parameters
4. Photograph all chassis connections.
5. Wear a grounded ESD wrist strap.

Stage 2 – Removal

1. Shut down the redundant controller safely.
2. Disconnect the redundancy fiber cable.
3. Remove communication cables.
4. Release the CPU from the RX3i rack.
5. Inspect the backplane connectors for damage.

Stage 3 – Installation

1. Verify the replacement model is IC695CRU320CA-EL.
2. Install the CPU into the identical slot.
3. Reconnect the redundancy fiber cable.
4. Restore Ethernet and serial communication wiring.
5. Download the original hardware configuration if required.

Stage 4 – Power-On & Testing

1. Restore system power.
2. Verify CPU diagnostics indicate healthy operation.
3. Confirm ACTIVE/STANDBY synchronization.
4. Test redundancy switchover.
5. Verify all I/O communication before returning the system to production.

IC695CRU320CA-EL

Firmware / Software Versions & Upgrade Notes

• Record the firmware revision before replacing the CPU.
• Both redundant CPUs should operate with identical firmware versions.
• Firmware Version 8.00 or later is required for certain PROFINET redundancy features.
• Avoid upgrading firmware on only one CPU in a redundant pair.
• After replacement, verify synchronization status, redundancy diagnostics, Ethernet communication, and I/O operation before placing the system back into service.

Frequently Asked Questions (FAQ)

Q1. Is this a New Original product?

Yes. This product should be supplied as New Original / New Surplus. It is not used, repaired, or refurbished. Each module should undergo serial number verification, functional testing, and ESD-safe handling before shipment.

Q2. What is the primary purpose of the ?

It enables Hot Standby CPU Redundancy, allowing two identical RX3i CPUs to operate in synchronized active/standby mode. If the active controller fails, the standby controller automatically takes over with minimal process interruption.

Q3. What memory does this CPU provide?

The module includes 64 MB of battery-backed RAM for user memory and 64 MB of non-volatile Flash memory for program storage. An approved auxiliary battery is required to retain RAM contents during power loss.

Q4. Can the CPU be replaced while the system is running?

Replacement procedures depend on the configured redundancy architecture and maintenance strategy. Even though the RX3i redundancy platform supports high availability, CPU replacement should follow GE’s approved maintenance procedures and validated shutdown or online repair processes to prevent synchronization issues.

Q5. Why choose New Surplus instead of refurbished?

New Surplus hardware preserves original OEM quality and service life. Compared with refurbished CPUs, it reduces the risk of hidden component aging, synchronization failures, and unexpected controller downtime.

Q6. What warranty is appropriate for New Surplus inventory?

Professional industrial automation suppliers typically provide a 12 month warranty, including serial number verification, functional testing, anti-static packaging, and export-grade shipping protection.

Q7. What inventory strategy is recommended?

For facilities operating PACSystems RX3i redundant PLC systems, maintain 1–2 New Surplus CPUs as critical buffer stock. Because redundant CPUs are essential to plant availability, organizations should monitor lifecycle status, reduce lead time variability through qualified vendor consolidation, and plan last-time-buy purchases before OEM inventory becomes more difficult to obtain.