Schneider Electric Processor Adapter - Manual (Page 105)

Assembling Momentum Components
870 USE 101 10 V.2 105
Section 3.3
Installing Batteries in an Option Adapter
Installation Guidelines
Why Install
Batteries? If you are using a Momentum Option Adapter in your CPU assembly, you have a
battery-backup capability. The batteries will maintain user logic, state RAM values
and the time-of-day clock in the event that the CPU loses power.
What Kind of
Batteries? Two AAA alkaline batteries can be installed in the compartment on the side of the
Option Adapter. A set of batteries is supplied with the module (not installed).
Installing
Batteries When installing the batteries, observe correct polarity, as indicated on the
compartment door.
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CAUTION
ELECTRONIC CIRCUITRY EXPOSED
When the battery door is open, electronic circuitry is exposed. Follow proper ESD measures
while handling the equipment during battery maintenance.
Failure to observe this precaution can result in injury or equipment damage.