principles of mechatronic systems

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Principles of Mechatronic Systems)جلسه دهم(هاي مكاترونيكي مباني سيستم

By: Reza Tikani

Mechanical Engineering Department

Isfahan University of Technology

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$�3�:When a start push button is pressed, the pneumatic cylinder shown in figure

extends, remains extended for 5 seconds and then returns. Draw the appropriate

ladder logic.

The start button and the end-of-stroke limit switch L.S.1 are the PLC inputs and the

solenoid Y1 is the output.

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Limit Switch:

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$�3�:

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; � 1 )�1�� =&�>� 1/22/ ( :The diagram shows a quick

approach circuit for a drill.

When a start push button is

pressed the drill motor starts

and the drill assembly quickly

approaches the work piece.

When the limit switch b1 is

reached the drill continues

slowly until the end-of-stroke

limit switch b2 is closed. The

assembly then returns to the

top position and the drill

motor stops. The hydraulic

pump may be assumed to run

continuously.

سيستم هاي هيدروليك

; � 2 )�1�� =&�>� 1/22/ ( :

The diagram shows a workstation for the clamping and drilling of parts. When the start

button is pressed the piece is clamped, drilled and then released.

If the stop button is pressed then both cylinders return to their retracted positions and the

drill motor stops.

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Eight steps per. revolution i.e. 45 deg. steps.

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Eight steps per. revolution i.e. 45 deg. steps.

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