Allen-Bradley SLC 500

2–10 Selecting Your Hardware Components
Publication 1747-6.2
Memory Backup for the 1747-L511, SLC 5/01 Processor
The curve below illustrates the ability of the memory back-up
capacitor to maintain the contents of the RAM in a 1747-L511. To
back up the memory for a longer period of time, a lithium battery,
Catalog Number 1747-BA, is required.
0
5
10
15
20
25
30
0 102030405060
Temperature ° C ( °F)
(77°) (86°) (95°) (104°)(113°) (122°) (131°) (140°)
Capacitor Memory Back-up Time
VS
Temperature
Time
(Days)
There are three types of I/O modules: input, output, and
combination. They are available in a wide variety of densities
including 4, 8, 16, and 32 point and can interface to AC, DC, and
TTL voltage levels. Output modules are available with solid-state
AC, solid-state DC, and relay contact type outputs.
For a complete listing of discrete I/O modules and specifications,
contact your Allen-Bradley sales office for the latest product data
entitled Discrete Input and Output Modules, publication 1746-2.35.
The SLC 500 family offers specialty I/O modules that enhance your
control system. Modules range in function from analog interface to
motion control, from communication to high-speed counting.
For a complete listing of specialty I/O modules and their
specifications, contact your Allen-Bradley sales office for the latest
system overview entitled SLC 500 Family of Small Programmable
Controllers, publication 1747-2.30, or for a related product data.
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AB PLCs