week 10 2_ladder_diagram_design
DESCRIPTION
hydraulic subtopicTRANSCRIPT
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Example:
(Need to use single solenoid valve)
A+ B+ B- A-
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1. Identify sequence of movement
2. Group the sequence : 1 group contains 1 relay
3. Identify limit switch status
A+ B+ B- A-
k1 k2 Start
a1
b1
b0
a0
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4. Identify relation
k1 start.a0
A+ k1
B+ k1.a1
k2 k1.b1
B- k2
A- k2.b0
Turn of k2
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