Description

The GE Fanuc IC693ACC302, also cataloged as the IC693ACC302 Auxiliary Smart Battery Module, operates as a dedicated hardware component for CMOS RAM battery backup retention within Series 90-30 PLC CPU architectures.

Hardware Specifications

Backplane Power Retention and Firmware Flash Compatibility

The IC693ACC302 supplies continuous backup voltage to CPU system RAM during primary power interruptions on the Series 90-30 backplane bus. By maintaining direct terminal connection to the memory retention circuitry, the module prevents volatile program memory loss, system register corruption, and configuration reset states.

The hardware operates alongside CPU firmware flash compatibility standards, ensuring user program logic, force tables, and diagnostic registers remain preserved during power cycle transitions without inducing backplane bus communication velocity latency.

Frequently Asked Questions

Q: Does replacing the IC693ACC302 require taking the Series 90-30 PLC offline?

A: No. The battery module can be replaced while the baseplate power supply is energized to ensure continuous voltage supply to the CPU RAM during the swap procedure.

Q: How does the module interact with the backplane bus logic circuit?

A: The module maintains dedicated power rail connections to memory backup terminals without drawing current from or supplying current to active backplane bus logic lines during normal powered operation.

Field Installation Guidelines

1. Ensure the main baseplate power supply remains energized during battery replacement to prevent CPU RAM memory loss.
2. Disconnect the inline wire harness connector of the existing battery module from the power supply receptacle.
3. Release the retaining latch and remove the depleted battery assembly from the mounting location.
4. Seat the new IC693ACC302 unit firmly into the housing slot until the mechanical tab locks.
5. Key the cable connector correctly and insert it into the mating header on the power supply or CPU module.