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The following figure represents an automated machining station controlled by a PLC. The operating part is composed of two three-phase asynchronous motors. The motor T is used for the ascent and descent of the drill, and the motor B is used for the operation of the drill. The system is controlled by three sensors S1, S2 and S3 and controlled by a push button DCY for starting the machine and a push button AU for emergency stop. for emergency stop.

The following figure represents an automated machining station controlled by a PLC. The operating part is composed of two three-phase asynchronous motors. The motor T is used for the ascent and descent of the drill, and the motor B is used for the operation of the drill. The system is controlled by three sensors S1, S2 and S3 and controlled by a push button DCY for starting the machine and a push button AU for emergency stop. for emergency stop.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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TOPIC 1: AUTOMATED MACHINING HEAD The following figure represents an automated machining station controlled by a PLC. The operating part is composed of two three-phase asynchronous motors. The motor T is used for the ascent and descent of the drill, and the motor B is used for the operation of the drill. The system is controlled by three sensors S1, S2 and S3 and controlled by a push button DCY for starting the machine and a push button AU for emergency stop. for emergency stop. Circuit breaker S1 B Contactor S2 K1 DCY AU Myy ME Thermal relay Motor B At rest, the machining head is up and controlled by the sensor $1. DCY (cycle start): the system performs the following cycle: From S1 to S2, the head descends at high speed (HS). The head descends in Low Speed (LS) and drill mode from S2 to S3. ● From $3 to S1, the head goes up in high speed (HS) and drill operation. Part 1: Study of the Operative Part 1.1 Motor B of the drill operation is a three-phase asynchronous motor. We ask you to complete the power circuit related to the control of motor B. by a PLC, taking into account the safety of the motor against mechanical overloads. 20
Transcribed Image Text:TOPIC 1: AUTOMATED MACHINING HEAD The following figure represents an automated machining station controlled by a PLC. The operating part is composed of two three-phase asynchronous motors. The motor T is used for the ascent and descent of the drill, and the motor B is used for the operation of the drill. The system is controlled by three sensors S1, S2 and S3 and controlled by a push button DCY for starting the machine and a push button AU for emergency stop. for emergency stop. Circuit breaker S1 B Contactor S2 K1 DCY AU Myy ME Thermal relay Motor B At rest, the machining head is up and controlled by the sensor $1. DCY (cycle start): the system performs the following cycle: From S1 to S2, the head descends at high speed (HS). The head descends in Low Speed (LS) and drill mode from S2 to S3. ● From $3 to S1, the head goes up in high speed (HS) and drill operation. Part 1: Study of the Operative Part 1.1 Motor B of the drill operation is a three-phase asynchronous motor. We ask you to complete the power circuit related to the control of motor B. by a PLC, taking into account the safety of the motor against mechanical overloads. 20
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