Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Machine Guarding > PLC > Flashcards

PLC Flashcards

1
Q

digitally operating electronic apparatus which uses a programmable memory for the internal storage of instructions by implementing specific functions, such as logic, sequencing, timing, counting, and arithmetic to control through digital or analog I/O modules various types of machines or processes.“

A

Programmable Logic Controller (PLC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

also known as the conventional relay logic replacer

A

PLC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

an electronic apparatus capable of storing logic and arithmetic operation used to control machines and processes.

A

Programmable Logic Controller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

PLC LEADING BRANDS

A

American: Allen Bradlley
European: Siemens
Asia: Omron and Mitsubishi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

is built by several modules within a single case. Therefore I/O capabilities are decided by the manufacturer, but not by user.

A

Compact PLC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

In compact type of PLC the maximum expansion possible is _
expansion.

A

3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A compact type of PLC must be:

A
  • Suitable for stand alone
  • Fix number I/O’s module
    -Designed for simple application
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

is built by several components that are plugged into a common rack or bus with extendable
I/O capabilities.

A

Modular PLC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

It is a type of PLC used for more complex and sophisticated control
- Flexible and versatile
- Huge I/O capabilities
- Suitable for centralized control systems

A

Modular PLC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

From Sensors:

A

Push buttons, contacts, input switches, etc.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Major Components of PLC

A

From input > Processor +power supply +programming device > output module

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Output module

A

Solenoids, Contacts, Alarms, etc.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Consist of Input modules and Output Modules

A

Input / Output (I/O) Section

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The most common type of I/O Interface module is

A

Discrete I/O Module

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

It makes decisions and executes control
instructions based on the input signal

A

Processor (CPU)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Its function is to store and run the PLC software
programs

A

Processor (CPU)

17
Q

It monitors the inputs and makes decisions in a PLC

A

Processor (CPU)

18
Q

It is the brain of the PLC

A

Processor (CPU)

19
Q

system that converts AC from the wall outlet
into the DC required by electronics circuit.

A

Power Supply

20
Q

Supplies DC power to other modules that plug into
the rack

A

Power Supply

21
Q

In large PLC system this power supply does not
normally supply power to the field devices

In small and micro PLC systems the power supply
is also used to power field devices.

A

Power Supply

22
Q

Programming Device

A

Personal Computer is the most commonly used programming device

23
Q

allows user to create, edit , document, store, and troubleshoot programs

A

software

24
Q

communicates with PLC via serial or parallel data communications link

A

Personal Computer

25
Q

PLC PROGRAMMING LANGUAGE

A

-Ladder logic (most common type of programming)

-Instruction list (IL)

  • Sequential Function Chart (SFC)

-Structured Text (ST) or

-Function Block Diagram (FBD)

Siemens version:
-Structured Control -Language (SCL) = (ST)
-Statement List (STL) = (IL)

26
Q

the most popular language today, especially in the US. It is based on the graphical representation of Relay Ladder Logic. Most current PLCs, whether compliant or not compliant with IEC61131-3, will support this

A

LADDER LOGIC

27
Q

This is like a version of ladder language but intextform. It has the same structure as assembly language.

A

Instruction List( Siemens is called STL Statement List )

28
Q

This language is less used in practice than LAD

A

Instruction List( Siemens is called STL )

29
Q

Provide another view of a set of instructions. Each function has a name to designate its specific task. Functions are indicated by a rectangle. Inputs are shown on the left- hand side(EN or enable in) and outputs are shown on the right-hand side(ENO or enable out).

A

Function Block Diagram

30
Q

This is a very powerful high-level language for PLC, derived from thePascal / C language.This is a language that is being increasingly used by engineers because it saves time

It can be used to define complex function blocks, which can be used in other languages. As a high-level language, _____ is very intuitive and easy to understand.

A

Structured Text (Structured Control Logic for Siemens)

31
Q

This is a powerful graphical programming style to describe the sequential states of a control program. However, it is a bit difficult to learn and time consuming to program, so it is the least used language of the 5 languages ​​according toIEC61131-3.

It is mainly used in programming control problems in sequential cycles

A

Sequential Function Chart (CFC for Siemens)

Machine Guarding (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions