Concept of Sinking and Sourcing in PLC | Learn under 5 min | Steps towards learning Automation - 03

This video by Practical Ninjas introduces the concepts of sourcing and sinking in PLC systems. It explains how sensors and actuators are wired to input and output modules, using circuit diagrams to illustrate sourcing and sinking types. The video emphasizes the importance of selecting the correct input module type based on the sensor type. It concludes with practical applications of these concepts, aiding in the proper selection of sensors, actuators, and IO modules for PLC projects.

What is the primary reason for understanding sourcing and sinking in PLCs?

• To increase the power output of the PLC

• To reduce the cost of the project

• To appropriately select sensors, actuators, and IO cards

• To improve the speed of the PLC

In a sourcing type circuit, where does the current first enter?

• The lamp

• The switch

• The power source

• The ground

What type of input module is required if a sensor is of the sinking type?

• Sourcing type

• Sinking type

• Neutral type

• Active type

When a sensor gives a true condition, how does it behave?

• As a resistor

• As an open switch

• As a closed switch

• As a power source

What should be connected to the ground terminal when using a sourcing type input module?

• The positive terminal of all sensors

• The output of the sensors

• The power source

• The common of all sensors