Product Overview

The GE IC693ACC302B is a specialized Lithium backup battery module designed to preserve the volatile memory (RAM) of GE Fanuc Series 90-30 Programmable Logic Controllers. This critical maintenance component ensures that the CPU retains its application program, register data, and internal clock settings during primary power interruptions or system shutdowns. By providing a continuous DC voltage to the CMOS RAM, the IC693ACC302B prevents costly data loss and eliminates the need for program reloading upon system restart.

While the IC693ACC302B is a foundational component for legacy Series 90-30 installations, it remains essential for maintaining the operational integrity of existing Distributed Control Systems (DCS). It is engineered for long-shelf life and stable discharge characteristics, providing a dependable fail-safe for industrial processors operating in 24/7 manufacturing environments.

Technical Characteristics

• Battery Chemistry: High-energy Lithium (Li-MnO2)

• Primary Application: Volatile RAM backup for Series 90-30 and early PACSystems CPUs

• Nominal Voltage: 3.0 VDC

• Connection Type: Integrated lead wire with a keyed polarized connector to prevent incorrect installation

• Shelf Life: Approximately 10 years at room temperature

• Service Life: Typically 1 to 2 years depending on CPU power-off duration and ambient temperature

• Mounting: Fits securely within the CPU battery compartment or attached via the battery clip

• Protection: Encapsulated design to resist industrial contaminants and vibration

• Dimensions: 5 x 1.3 x 4.4 cm

• Weight: 0.04 kg

• Country of Origin: USA

Installation and Maintenance Requirements

Proper management of the IC693ACC302B is vital for system uptime. The module is equipped with a polarized connector that snaps directly into the CPU or power supply battery port. To ensure uninterrupted data retention, the battery should always be replaced while the PLC rack is powered on; this allows the power supply to maintain the RAM while the old battery is disconnected.

For facilities transitioning to modern standards, it is important to note that while the IC693ACC302B serves legacy hardware, newer PACSystems RX3i controllers often utilize the IC695ACC302 "Smart Battery" for extended backup and advanced diagnostics. However, for the vast installed base of Series 90-30 controllers, the IC693ACC302B remains the standard replacement part. Regularly scheduled replacement cycles (typically every 12-24 months) are recommended to avoid "Battery Low" faults and potential logic loss in mission-critical applications.