GE IC695ACC402 CPU Memory Backup Module

GE IC695ACC402 RX3i CPU Memory Backup Module – Stop the Clock on Your Downtime

Every minute your line is down, you’re bleeding money. A failed memory backup module on a PACSystems RX3i CPU doesn’t just halt production — it wipes the program state, forces a cold restart, and puts your entire process at risk of a corrupted restore. The GE IC695ACC402 is the exact OEM replacement you need, and we have it on the shelf in Xiamen right now. No lead-time games, no broker runaround — just a verified unit out the door today.

We stock the IC695ACC402 specifically because RX3i-based systems are still the backbone of thousands of manufacturing, oil & gas, and utilities installations worldwide. When this module fails, there is no workaround. You need the part. We get it to you.

URGENT REQUIREMENT? Contact: [email protected] | WhatsApp: +86 18359268345

Quick Technical Datasheet

Troubleshooting & Replacement Tips

After ten years of field calls, here’s what actually goes wrong with the IC695ACC402 and what you need to watch when swapping it out:

Common Failure Signatures:

• CPU fault code 0x0041 / Memory Module Not Detected — The CPU powers up but throws a hardware fault immediately. The module has lost contact or the flash has failed. Do not attempt a warm restart; it will not clear. Power down, reseat or replace the IC695ACC402, then cold-boot.
• Intermittent program loss after power cycling — If your RX3i CPU is losing its ladder logic after every power interruption, the backup module is no longer retaining data. This is a classic flash wear-out symptom on older units. The module itself gives no LED indication of this failure — the only tell is the program disappearing.
• CPU stuck in Stop/Fault with no I/O scan — Combined with a memory fault code, this usually means the CPU attempted a restore from a corrupted backup image. You’ll need to clear the fault, reload the program from Proficy Machine Edition, and replace the IC695ACC402 before the next power cycle.

Replacement Procedure (Field-Tested):

• Step 1 — Back up first. Before touching anything, connect Proficy Machine Edition and do a full program upload to your laptop. If the CPU is still communicating, this takes under two minutes. Don’t skip it.
• Step 2 — Power down the rack. The IC695ACC402 is not hot-swappable. Cut power to the entire RX3i rack. Attempting to swap under power risks corrupting the CPU’s internal state.
• Step 3 — Remove the old module. The IC695ACC402 plugs directly into the CPU’s dedicated memory slot — friction-fit connector on the side or top of the CPU module depending on your CPE variant. Firm, straight pull. No tools required.
• Step 4 — Seat the replacement. Align the connector carefully and press firmly until you feel it click. A partial seat will cause the same not-detected fault you started with.
• Step 5 — Power up and verify. On first boot with a new module, the CPU will initialize the flash. You’ll see the OK LED blink during this process — typically 10–30 seconds. Do not interrupt power during initialization.
• Step 6 — Download the program. From Proficy Machine Edition, do a full program download to the CPU. The new IC695ACC402 will automatically capture the program image on the next controlled power-down.
• Step 7 — Firmware check. Confirm your CPE firmware version is compatible with the IC695ACC402 revision you received. GE PME will flag a mismatch during the download sequence. If flagged, update CPU firmware via the PME firmware upgrade utility before going back online.

No dip switches, no addressing jumpers, no configuration required. The IC695ACC402 is auto-detected by the CPU. The only configuration item is ensuring your PME project has Memory Backup Module enabled in the hardware configuration tree — if it’s set to None, the CPU will ignore the module even when physically present.

Reliability in Harsh Conditions

RX3i systems don’t live in climate-controlled server rooms. They run in steel mills, offshore platforms, chemical plants, and food processing lines where the environment is actively trying to kill your electronics. The IC695ACC402 is built to GE’s industrial-grade specifications, validated for the conditions you’re actually dealing with:

• Vibration resistance: Designed to IEC 60068-2-6 sinusoidal vibration profiles — the kind of continuous mechanical stress found in compressor rooms and heavy press lines. The direct-plug connector design eliminates the ribbon cable failure points common in older backup solutions.
• Thermal cycling: Flash memory retention is rated across the full 0–60°C operating range with no performance degradation. No moving parts, no battery — the two most common thermal failure modes in legacy backup systems are simply not present.
• Humidity and condensation: Conformal coating on the PCB provides protection against moisture ingress in high-humidity environments. Rated to IEC 60068-2-78 damp heat conditions.
• EMI/RFI immunity: CE-marked and tested to EN 61000 series immunity standards. In environments with large VFDs, welding equipment, or high-current switching, the module maintains data integrity without shielding add-ons.
• Battery-free flash design: Rated for 100,000 write cycles. At one write per power cycle, that’s decades of operation with zero maintenance.

Global Express Logistics

Our warehouse is in Xiamen, Fujian — one of China’s primary export hubs with direct access to DHL, FedEx, and UPS international gateways. Here’s how your order moves:

• Order confirmed before 15:00 CST: Same-day dispatch. Your tracking number is in your inbox before end of business.
• DHL Express Worldwide: Xiamen to most major industrial cities in Europe, North America, Southeast Asia, and the Middle East in 2–4 business days. Default carrier for urgent replacement orders.
• FedEx International Priority: Available for US, Canada, and Mexico destinations. Typically 2–3 business days from Xiamen to US gateway cities.
• Customs clearance: We prepare a complete export package — commercial invoice, packing list, HS code classification (8537.10), and certificate of origin. EU customers get EORI-compatible documentation. US customers get HTS-coded invoices to streamline CBP clearance.
• Bulk and project orders: For quantities of 5+ units or multi-line BOM orders, we coordinate consolidated shipments to reduce per-unit freight cost. Sea freight via Xiamen Port available for non-urgent large-volume orders.
• Real-time tracking: All shipments include door-to-door tracking. We proactively monitor shipments and alert you to any customs holds or carrier delays before they become your problem.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
© 2026