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Worksheets9 Components of a PLC sequence control system Quiz
Total questions: 11
Worksheet time: 8mins
What is the purpose of bringing parts of a sequence control system together in workcells in industry?
To increase the number of tasks
To reduce costs and increase effectiveness
To complicate the process
To separate tasks into different areas
How does a PLC unit interact with actuators?
It sends signals based on data received
It directly powers the actuators
It stores actuator settings
It physically connects to the actuators
What is the primary role of a sensor in a PLC system?
To provide the PLC with information
To control the PLC directly
To power the PLC
To store data in the PLC
What is one function of an actuator?
Starting an electric motor to power a conveyor belt
Cooling down a motor
Measuring temperature
Storing electrical energy
Which of the following actions is NOT performed by an actuator according to the document?
Switching electrical power to illuminate a lamp
Opening a valve to supply compressed air
Calculating data for a PLC
Starting an electric motor
What is one characteristic of the PLC in relation to the workcell?
The PLC operates at higher voltages than the inputs and outputs.
The PLC is electrically connected to the workcell.
The PLC operates at lower voltages than many of the inputs and outputs.
The PLC is not isolated from the workcell.
What is the role of the opto-coupler in the PLC input sequence?
It directly powers the PLC with a +24 V signal.
It isolates delicate PLC circuits from the higher voltage of the workcell.
It amplifies the +24 V signal to a +48 V signal.
It converts the +5 V signal to a +24 V signal.
What voltage signal does the opto-coupler produce for the PLC input?
+24 V
+12 V
+5 V
+48 V
What voltage signal does the PLC send to the relay to energize it?
+5 V
+12 V
+24 V
+3 V
What happens when the relay is energized in the PLC system?
The circuit is broken.
The contacts close.
The motor stops.
The voltage decreases.
What are the components of a PLC sequence control system used for?
To control the speed of a motor
To manage the sequence of operations in a workcell
To measure temperature
To provide power supply
