Engine: Electricity

Question 792 of 1,386

Assuming the ladder diagram of figure "1" and the corresponding input/output diagram of figure "2" represents a simple PLC motor controller, what statement is true? EL-0232

USCG illustration EL-0232 for Engine Electricity question 792 — Illustration EL-0232

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Be BergenAckerman · Oct 2, 2016

This illustration does not match the question

fo fowen · Oct 9, 2018

I agree. How can such a question be posed and an acceptable answer be demanded when

1) There is no figure 1
2) There is no figure 2
3) There is no output A
4) There is no output B

?????

fo fowen · Oct 9, 2018

In the drawings, what is happening is that SW-0 seems to be normally closed, SW-1 seems to be normally open. SW-0 is connected to IN 0, and SW-1 is connected to IN 1. If neither switch is actuated, the top rung is an AND function, so Lamp 0 is off. If SW-1 is actuated, then Lamp 0 will turn on. Lamp 0 is connected to OUT-0. So if OUT-0 is asserted (turned on), then Lamp-0 turns on. With the bottom rung, if SW-0 is not actuated, then Lamp 1 will turn on. Anyway, no question is posed regarding these figures, so it is hard to tell what the USCG is getting at besides confusing people.

Engine: Electricity

Assuming the ladder diagram of figure "1" and the corresponding input/output diagram of figure "2" represents a simple PLC motor controller, what statement is true? EL-0232

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