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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 />

T4:0/DN<br />

T4:1/DN<br />

T4:2/DN<br />

T4:3/DN<br />

T4:0/TT<br />

T4:2/TT<br />

TON<br />

Timer T4:0<br />

Base 1s<br />

Preset 2<br />

TON<br />

Timer T4:1<br />

Base 1s<br />

Preset 3<br />

TON<br />

Timer T4:2<br />

Base 1s<br />

Preset 1<br />

TON<br />

Timer T4:3<br />

Base 1s<br />

Preset 2<br />

TON<br />

Timer T4:4<br />

Base 1s<br />

Preset 1<br />

output<br />

T4:4/TT

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