- 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.

- 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.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter22: Sequence Control

Section: Chapter Questions

Problem 1SQ: Describe what is meant by sequence control.

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