GE IC695ACC302-AB Smart Battery Module – Obsolete PACSystems RX3i Spare Part

Technical Dossier

Product Details And Specifications

GE IC695ACC302-AB Smart Battery Module – Obsolete PACSystems RX3i Spare Part

When a GE PACSystems RX3i installation loses its battery backup module, the consequences extend far beyond a simple component swap. The RX3i platform is deeply embedded in continuous-process industries — petrochemical plants, power generation facilities, water treatment infrastructure, and discrete manufacturing lines — where the cost of a full control system migration routinely runs into seven figures. A single failed IC695ACC302-AB, left unaddressed, can force a plant into an unplanned shutdown, trigger a mandatory engineering review, and initiate a capital expenditure cycle that management had not budgeted for. DriveKNMS maintains sourced inventory of the IC695ACC302-AB specifically to prevent that scenario. This is not a commodity component. It is a lifecycle-critical asset.

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Solving the Discontinued Hardware Crisis

The GE PACSystems RX3i platform was introduced in the early 2000s as a successor to the Series 90-30 and Series 90-70 families. It achieved widespread adoption across North American and European process industries through the 2000s and 2010s. Following GE's divestiture of its industrial automation division to Emerson (completed 2023), long-term OEM support for legacy RX3i accessories — including the IC695ACC302-AB — has become increasingly uncertain. Replacement parts are no longer produced on a standard manufacturing schedule.

The IC695ACC302-AB is not a peripheral convenience item. It is the mechanism by which the RX3i CPU retains its program logic, I/O configuration, and runtime data tables during a power interruption. Without a functional battery module, any unplanned power event results in a cold-start condition: the CPU boots without its retained program, I/O forcing states are lost, and in some configurations, the system requires manual operator intervention before it can resume automatic control. In a continuous-process environment — a refinery, a chemical reactor, a water treatment plant — that sequence of events carries direct safety and regulatory implications.

Condition & Reliability Assurance

Obsolete battery modules present specific failure modes that differ from standard electronic components. DriveKNMS applies a five-step inspection and refurbishment protocol to every IC695ACC302-AB unit before it is offered for sale:

• Step 1 – Electrolytic Capacitor Assessment: All electrolytic capacitors on the module PCB are inspected for signs of electrolyte leakage, bulging, or ESR degradation. Capacitors that do not meet specification are replaced with equivalent-rated components.
• Step 2 – Battery Cell Verification: The internal lithium battery cell is tested for open-circuit voltage and load capacity. Cells that fall below the manufacturer's minimum retention threshold are replaced. The replacement date is documented and included with the unit.
• Step 3 – Firmware Version Confirmation: Where accessible, the module's firmware revision is recorded and cross-referenced against GE's published compatibility matrix for the target CPU revision. Incompatible firmware revisions are flagged prior to shipment.
• Step 4 – Connector and Pin Inspection: All backplane connector pins are examined under magnification for corrosion, mechanical deformation, or contamination. Affected pins are cleaned using approved contact restoration procedures.
• Step 5 – Functional Power-On Test: Each unit is installed in a test backplane with a compatible RX3i CPU and subjected to a simulated power-cycle sequence to verify that battery-backed RAM retention functions correctly across a defined hold-up period.

Key Features for System Maintenance

• Drop-in replacement: The IC695ACC302-AB installs directly into the RX3i Universal Backplane slot without modification to the backplane, CPU, or wiring infrastructure.
• No reprogramming required: Replacing the battery module does not alter the CPU's stored program or configuration data. The existing application logic remains intact.
• No engineering rework: There is no requirement to engage a controls engineer or system integrator for a battery module replacement. Qualified maintenance personnel can complete the swap using standard procedures documented in GE publication GFK-2222.
• Avoids capital expenditure trigger: Maintaining a stocked spare of the IC695ACC302-AB prevents a single component failure from escalating into a capital project review. The cost differential between a spare module and a platform migration is not marginal — it is structural.
• Long-term asset protection: Facilities operating RX3i systems beyond their original design life benefit from maintaining a minimum of two IC695ACC302-AB units in bonded stores. This provides coverage for both scheduled preventive replacement and unplanned failure events without dependency on spot-market availability.

Q: Can the IC695ACC302-AB be used with the IC695CPE302 or IC695CPE305 CPU variants?
A: Compatibility depends on the specific CPU firmware revision and backplane configuration. Contact DriveKNMS with your full system configuration details for a pre-sale compatibility confirmation.