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Design a PLC program that satisfies the following conditions (latched interlocks): Momentarily depressing SW1 turns on light...

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Electrical Engineering

Design a PLC program that satisfies the followingconditions (latched interlocks):

Momentarily depressing SW1 turns on light 1; light 1 will remainon even after SW1 is turned off. Momentarily pressing SW 2 turns onlight 2; light 2 remains on even after SW2 is turned off. Light 2can only be energized if light 1 is already on. Momentarilypressing SW 3 turns on light 3; light 3 remains on even after SW 3is turned off. Light 3 can only be turned on if either light 1 orlight 2 are already on. Momentarily pressing SW4 turns all lightsoff. After the circuit is turned off it is immediately ready tostart again.

Answer & Explanation Solved by verified expert
4.4 Ratings (737 Votes)
Asshown in the Ladder Logic SW1 SW2 and SW3 are NO PushButtons While SW4 is NC Push buttonLights are represented by L1 L2 and L3 A B and C are latchingrelays used to hold up the latched interlocks or contacts shown byNO contacts a B and C corresponding to A    See Answer
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