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Automating Manufacturing Systems - Process Control and ...

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plc design - 10.10<br />

3. The first wrap is done by turning on output paper for 1 second.<br />

4. The paper is then folded by turning on the crease output for 0.5 seconds.<br />

5. An adhesive is applied by turning on output tape for 0.75 seconds.<br />

6. The part is release by turning off output hold.<br />

7. The process pauses until the part sensors goes off, <strong>and</strong> then the machine returns<br />

to idle.<br />

10.7 PRACTICE PROBLEM SOLUTIONS<br />

1.<br />

on<br />

t_a.DN<br />

t_b.DN<br />

t_c.DN<br />

t_d.DN<br />

t_a.TT<br />

t_c.TT<br />

TON<br />

Timer t_a<br />

Base 1s<br />

Preset 2<br />

TON<br />

Timer t_b<br />

Base 1s<br />

Preset 3<br />

TON<br />

Timer t_c<br />

Base 1s<br />

Preset 1<br />

TON<br />

Timer t_d<br />

Base 1s<br />

Preset 2<br />

TON<br />

Timer t_e<br />

Base 1s<br />

Preset 1<br />

output<br />

t_e.TT<br />

www.PA<strong>Control</strong>.com

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