GE IC695ACC400-AA Replacement for PACSystems RX3i

Product Overview

GE IC695ACC400-AA Replacement for PACSystems RX3i: Smooth Migration & Legacy System Upgrade

The GE IC695ACC400-AA is the dedicated CPU Energy Pack for the GE PACSystems RX3i platform, providing capacitor-backed energy storage that protects CPU memory and retains program data during unexpected power interruptions. As GE Emerson continues to evolve its automation portfolio, many facilities running legacy RX3i racks are now facing end-of-life notices on associated components, making a planned, low-risk migration strategy essential for maintaining production continuity.

This replacement IC695ACC400-AA module is sourced from verified supply channels, fully tested prior to shipment, and backed by a 12-month warranty. Whether you are performing a like-for-like swap on a failed unit or executing a broader control system modernization project, this module is engineered to slot directly into your existing RX3i rack without requiring firmware changes, rewiring, or reprogramming of the CPU.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful RX3i modernization project rarely involves a single component. When replacing or upgrading the IC695ACC400-AA, engineers typically audit the surrounding rack assembly to ensure the entire control node is migration-ready. The CPU itself — commonly an IC695CPU315 or IC695CPU320 — should be evaluated for firmware currency and memory capacity before the energy pack is swapped, as an outdated CPU revision may not fully leverage the capacitor retention improvements in the -AA suffix release.

Power integrity is equally critical. The IC695PSA040 and IC695PSD040 power supply modules that feed the Universal Backplane must be confirmed operational, since a degraded power supply can mask energy pack faults and lead to misdiagnosis. Similarly, if your system uses an IC695ETM001 Ethernet module or an IC695PBM300 PROFIBUS Master for field device communication, verifying their firmware and physical seating during the same maintenance window eliminates unnecessary future downtime.

On the I/O side, mixed analog and discrete modules such as the IC695ALG600 analog input module and IC694MDL754 discrete output module should be inspected for terminal block integrity and wiring condition, particularly in high-vibration or high-humidity environments where connector fatigue accelerates. If your legacy system includes an IC693CMM311 serial communications module for Modbus RTU or DNP3 links to RTUs or drives, confirm that the communication parameters are documented before any rack disturbance — this prevents protocol mismatches during recommissioning.

For facilities migrating from older Series 90-30 or Series 90-70 architectures to the RX3i platform, the IC695ACC400-AA is a standard inclusion in the new rack build. The transition typically involves remapping I/O addresses, converting ladder logic from the legacy programming environment to PAC Machine Edition, and verifying that field wiring terminations are compatible with the new I/O module terminal styles. An IC695CHS016 16-slot backplane provides ample expansion headroom for mixed I/O, communications, and specialty modules in a single rack, reducing cabinet footprint compared to multi-rack Series 90-70 configurations.

Retrofit Guidance FAQ

Q: Can I replace the IC695ACC400-AA without powering down the entire rack?
A: GE recommends performing the energy pack swap during a scheduled maintenance window with the CPU in STOP mode. While the module itself is a passive capacitor assembly, disturbing the CPU faceplate connection while the CPU is in RUN mode risks a momentary memory retention interruption. Always follow your site’s lockout/tagout procedures.

Q: Will replacing the energy pack affect my ladder logic or variable data?
A: No. The IC695ACC400-AA retains CPU memory during power loss but does not store program logic independently. Your application program resides in CPU flash memory and is unaffected by energy pack replacement. Retained variable values (non-volatile data) will be preserved as long as the CPU remains powered during the swap.

Q: Is the IC695ACC400-AA compatible with PROFINET and Ethernet/IP communication modules?
A: Yes. The energy pack has no dependency on communication protocol. It is compatible with all RX3i communication modules including IC695ETM001 Ethernet, IC695PBM300 PROFIBUS, and IC695CMM002 serial modules without any configuration changes.

Q: How do I verify the energy pack is functioning correctly after installation?
A: Use PAC Machine Edition (PME) diagnostics to check CPU module status. A healthy IC695ACC400-AA will show no fault in the hardware configuration tree. You can also perform a controlled power cycle test: remove rack power briefly and confirm that retained variable values are intact upon restart.

Q: What if my cabinet has limited space for the RX3i rack?
A: The IC695ACC400-AA mounts flush on the CPU faceplate and adds minimal depth. The RX3i Universal Backplane form factor is significantly more compact than Series 90-70 racks, and the energy pack does not increase the rack’s external dimensions.

Warranty Assurance

Every IC695ACC400-AA unit shipped by TOPNLMS undergoes pre-shipment functional verification including capacitor charge/discharge cycle testing and visual inspection for connector integrity. All units are supplied with a 12-month warranty covering manufacturing defects and functional failure under normal operating conditions.

In the event of a warranty claim, TOPNLMS provides direct replacement support with priority processing for production-critical applications. Our technical team is available to assist with installation verification, fault diagnosis, and compatibility confirmation before and after shipment. Units are packaged in anti-static, shock-resistant materials suitable for international air and sea freight.

Stock is maintained in Xiamen, China, with express shipping options available to minimize lead time for urgent replacement scenarios. Typical dispatch is within 1–2 business days of order confirmation.

For volume procurement, OEM integration projects, or multi-site maintenance contracts, contact our industrial sales team directly for pricing and availability.