Introduction - GE GFK-2741C Manual

Introduction

1.
Many PACSystems CPUs require a battery or energy pack to back up volatile memory. This memory is separate
from the non-volatile flash memory. This manual covers the technologies used to back up volatile memory on
PACSystems RX3i and RX7i CPUs, and RXi Controllers. Other GE Intelligent Platforms manuals and documents
discuss memory retention technologies in passing. However, when it comes to energy sources used by PACSystems
to back up volatile memory, this manual should be considered the definitive source.
Other methods of retaining volatile memory, such as real-time clock batteries, are not covered by this manual.
Note, however, that RX7i CPUs use the same battery mechanism to back up the calendar clock and user memory.
This manual includes:
 A battery selection guide, information on battery life and usage, disposal instructions, and agency
compliance
RXi Energy Pack specifications, installation, operation, and service and maintenance

GFK-2741C March 2015
Introduction
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