Where is it used?
1.- PLC Introduction
What is it?
The most complete definition of a
PLC is that given by the NEMA
(National Association of Electrical
Manufacturers) that says that a
PLC is:
“Electronic instrument, which
uses programmable memory to
store instructions on the
implementation of functions, such
as logical operations, sequences
of actions, temporal
specifications, counters and
calculations for control by means
of analog or digital I / O modules
on different types of machines
and processes ".
It uses a programmable memory
to store instructions and specific
functions that include On/Off
control, timing, counting,
sequencing, arithmetic, and data
handling.
The PLC is designed for multiple
input and output signals, wide
temperature ranges, immunity
to electrical noise and resistance
to vibration and impact.
Programs for machine operation
control are often used in backup
batteries or non-volatile
memories.
Why and what to use it
for? Mainly PLCs meet the
requirements of process control
and machinery sequences within
the industrial sector, and if we
check thoroughly we will find
PLCs in elevators, escalators,
ovens, dosing machines,
pumping systems for aqueducts
and pipelines, but also in
shopping centers even in
washing machines and
microwaves, food and beverage
vending machines, etc.