Automation Flashcards
Which industry first used PLC’s
Automotive
A plc is a special kind of what type of computer
Industrial
Most PLC’s are programmed in what type of logic
Ladder
4 major components of a plc
Power supply
Central processing unit (cpu)
Programming terminal
Input/output modules
What percentage of voltage must a power supply regulate
5% of required value
In a plc all logic functions are performed by what
CPU
What is another name for the programming terminal
Loading
With a plc what is the laptop referred to as
Terminal
What type of isolation is used to electrically separate outside voltages from the internal circuitry of the plc
Optical
What is connected across the AC Input to help eliminate any voltage spikes
Metal oxide varistor (MOV)
If an output module controls a DC voltage what solid state device is used to connect load to line
Power phototransitor
If an output module controls an AC voltage what device is used to connect load to line
Triac or phototriac
What is the range in amps that output modules can generally handle
.5 - 3.0 amps
When is an interposing relay used
When the load amps exceed the rating of the output module
A numbering system containing eight digits (0-7)
Octal
