Answered: - Industrial Motor Controls 6.a. Where…

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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- Industrial Motor Controls

6.a. Where would be the first place to check if a PLC-controlled motor speed control system fails and the
motor stops turning?
A. At the auxiliary power supply
B. At the motor speed controller for signs of an error code
C. At the ladder logic for the register assigned to the D/A module
D. At the D/A module
6.b. What is the purpose of relay CRE in the roll stand machine?
A. Relay CRE is used as an emergency stop relay.
B. Relay CRE is used to control an alarm light.
C. Relay CRE is used to power the PLC.
D. Relay CRE is used to power the input modules.

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