j. Suppose that rung 1 is true for 5 s and then power is lost. What will the acc
ID: 2083753 • Letter: J
Question
j. Suppose that rung 1 is true for 5 s and then power is lost. What will the accumulated value of the counter be when power is restored? 4. Study the ladder logic program in Figure 7-41 and answer the questions that follow: a. What type of timer has been programmed? b. What is the length of the time-delay period? c. What is the value of the accumulated time when power is first applied? d. When does the timer start timing? e. When does the timer stop timing and reset itself? When input LS1 is first closed, which rungs are true and which are false? g. When input LS1 is first closed, state the status Con or off of each output. h. When the timer's accumulated value equals the pre- set value, which rungs are true and which are false? i. When the timer's accumulated value equals the preset value, state the status (on or off of each output. j. Suppose that rung 1 is true for 5 s and then power is lost. What will the accumulated value of the counter be when power is restored? 5. Study the ladder logic program in Figure 7-42, and answer the questions that follow: what type of timer has been programmed?Explanation / Answer
A- OFF DELAY TIMER IS USED HERE. off delay timer start timing once the rung containing this timer goes zero and after timing to preset time , this timer goes off.
B-The length of the time delay period is 25 second as the preset vLue of TOF timer is set to 25 with a base value of 1 second.
C-When power is applied the accumulated time is zero. As i said earlier off delay timer start timing after the power goes off.
D- The timer start timing when the LS1is closed.
E- When again the power is given or ls1 is energized.
F- 1,3,4 are true
G- sol-b and R will be on.
H-2,5 are true.
I- sol-a and y are enabled.
J- zero.
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