Asked by Gabriel Matar on May 07, 2024
Verified
The MCR instruction is not a replacement for a hardwired master control relay that provides emergency stop.
MCR Instruction
A "Master Control Reset" command used in programmable logic controllers to reset the state of specified outputs to a predefined state.
Master Control Relay
A primary relay used within a control system that can shut down or enable operation of various parts of the system, acting as a safety and control element.
- Gain an understanding of the crucial role and implementation of Master Control Relay circuits in PLC configurations.
- Understand the importance of correctly connecting emergency stop circuits and input/output devices to ensure safety.
Verified Answer
AK
anshul kumarMay 11, 2024
Final Answer :
True
Explanation :
The MCR instruction is a software-based control that can pause or stop a process during normal operation, but it cannot replace a hardwired master control relay that is designed to immediately shut down a system in emergency situations.
Learning Objectives
- Gain an understanding of the crucial role and implementation of Master Control Relay circuits in PLC configurations.
- Understand the importance of correctly connecting emergency stop circuits and input/output devices to ensure safety.
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