FFXI Haven - Ваш Источник #1.

Select a sensor to pick up a transparent plastic bottle from a manufacturer. Copy or print the specifications, and then draw a wiring diagram that shows how it will be wired to an appropriate PLC input card.
2. Sketch the wiring to connect a power supply and PNP sensor to the PLC input card shown

discrete sensors -4.28

+ 24VDC

1. Sketch the wiring for inputs that include the following items. 3 normally open push buttons 1 thermal relay 3 sinking sensors 1 sourcing sensor
1. A PLC has eight 10-60Vdc inputs, and four relay outputs. It is to be connected to the following devices. Draw the required wiring.
* Two inductive proximity sensors with sourcing and sinking outputs.
* A NO run button and NC stop button.
* A 120Vac light.
* A 24Vdc solenoid.
2. Draw a ladder wiring diagram (as done in the lab) for a system that has two push-buttons and a sourcing/sinking proximity sensors for 10-60Vdc inputs and two 120Vac output lights. Don’t

discrete sensors -4.29
I:0/0 I:0/0
I:0/1
I:0/2 I:0/1
I:0/3
I:0/4 I:0/2
I:0/5
I:0/6 I:0/3
I:0/7
com

discrete sensors -4.30 forget to include hard-wired start and stop buttons with an MCR. L1 N

L1 PLC N
I:0/0 Vac
I:0/1 O:0/0
I:0/2 O:0/1
I:0/3 O:0/2
com O:0/3

4.6 PRACTICE PROBLEM SOLUTIONS

1. capacitive proximity, contact switch, photo-optic retroreflective/diffuse, ultrasonic
2. materials that can be sensed, environmental factors such as dirt, distance to object
3. the sinking output will pass only DC in a single direction, whereas a switch can pass AC and DC.

discrete sensors -4.31

b) the PNP output was selected. because it will supply current, while the input card requires it.

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