TM 5-3895-374-24-1
Chapter 8
Maintaining Your Control
System
Installing and Replacing the
Back-up power for RAM is provided by a replaceable battery The lithium
Battery of the SLC 5/01 or 5/02
battery provides back-up for approximately five years for the 1747-L5 11
Processor
and two years for the 1747-L514 and 1747-L524 A red BATTERY LOW
LED alerts you when the battery voltage has fallen below a threshold level
Once the BATTERY LOW LED goes on, do not remove processor power or your program
may be lost Replace the battery as soon as possible You can replace the battery while the
processor is powered.
For battery installation or replacement do the following:
1.
Open the door of the processor.
2.
If you are
installing a battery in a new processor (battery never Installed before),
remove the jumper from the battery connector socket. Store the jumper In
safe place for possible future use without the battery.
replacing an old battery, unplug the existing battery connector and
remove from the retainer clips The figure below shows where to install
the battery In a 5/01 or 5/02 processor.
3.
Insert a new or replacement battery in the holder making sure it is held in
by the retainer clips.
4.
Plug the battery connector into the socket See the figure below.
5.
Close the processor door.
(page 3-429)
