12) Study the ladder logic program in the figure below and answer the questions that follow: a. What is the purpose of interconnecting the two timers? b. How much time must elapse before output PL is energized? c. What two conditions must be satisfied for timer T4:2 to start timing? d. Assume that output PL is on and power to the system is lost. When power is restored, what will the status of this output be? e. When input PB2 is on, what will happen? f. When input PB1 is on, how much accumulate. Ladder logic program Output PB2 L2 T4:1 Inputs (RES) L1 T4:2 PB1 (RES) PL PB2 -RTO PB1 RETENTIVE TIMER ON T4:1 EN 1.0 2900 CON) Timer Time base Preset Accumulated -RTO PB1 T4:1 RETENTIVE TIMER ON Timer Time base T4:2 (EN) 1.0 1780 DN Preset (Na) CON) Accumulated T4:2 PL HE DN

12) Study the ladder logic program in the figure below and answer the questions that follow: a. What is the purpose of interconnecting the two timers? b. How much time must elapse before output PL is energized? c. What two conditions must be satisfied for timer T4:2 to start timing? d. Assume that output PL is on and power to the system is lost. When power is restored, what will the status of this output be? e. When input PB2 is on, what will happen? f. When input PB1 is on, how much accumulate. Ladder logic program Output PB2 L2 T4:1 Inputs (RES) L1 T4:2 PB1 (RES) PL PB2 -RTO PB1 RETENTIVE TIMER ON T4:1 EN 1.0 2900 CON) Timer Time base Preset Accumulated -RTO PB1 T4:1 RETENTIVE TIMER ON Timer Time base T4:2 (EN) 1.0 1780 DN Preset (Na) CON) Accumulated T4:2 PL HE DN

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter13: Magnetic Induction

Section: Chapter Questions

Problem 1PA

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