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Problem3 3

The document discusses an industrial automation process involving cleaning a viscous fluid with water using a pump, pipes, and electrovalves. It also discusses an automation system for controlling the movement of a carriage using proximity sensors and buttons to move it between two limit positions.

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Cao Loi
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234 views1 page

Problem3 3

The document discusses an industrial automation process involving cleaning a viscous fluid with water using a pump, pipes, and electrovalves. It also discusses an automation system for controlling the movement of a carriage using proximity sensors and buttons to move it between two limit positions.

Uploaded by

Cao Loi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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116 ◾ Introduction to Industrial Automation

with water for its cleaning. At the end of this period, the pump stops and the electrovalve
V2
closes automatically. Design the required automation circuit.
Viscous
fluid
Water
R
Pipe
network
V2
V1
Pump

3.21. In a special machine tool, the carriage is equipped with a reversible motor, as shown in
the figure. Thus, the carriage can be moved between the two limit positions A and B,
which are detected by the two proximity sensors PS1 and PS2, correspondingly. The
carriage lies initially at the left position (A) and we want it to be moved according to
the following specifications:
a. By pressing instantly button b1 the carriage moves right to position B.
b. When the carriage reaches point B (with a signal from PS2), it stops moving.
c. With the carriage at position B, the instant pressing of button b1 causes it to move left.
When the carriage reaches position A (with a signal from PS1), it stops. The steps (a)
and
(c) can be repeated as many times as we want.
d. If the button b2 is pressed during the carriage’s movement in any direction, then
the carriage stops at its current location. By pressing button b1 again, the carriage
continues moving in the same direction before it had been stopped.
Design an automation circuit to satisfy the described specifications.
Carriage
A B
M
PS1 PS2
b1 b2

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