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QI) The following PLC program was written to control the operation of a large electric motor- driven pump. A variety of "permissive" inputs protect the pump from damage under abnormal conditions, and one permissive in particular ("valve open") will only allow the pump to start up if one of the valves in the piping system is in the full-open position: Start Valve open Motor (s)- Stop Motor (R)H Bearing temp. Vibration Motor temp. Oil pressure Identify the type of contact (either NO or NC) necessary for each of these electrical switch contacts, based on the trip condition (either high or low) and how each input is applied in the PLC program: 1. Start pushbutton = NO or NC? 2. Throttling valve open limit NO or NC? 3. Stop pushbutton = NO or NC? 4. High bearing temperature NO or NC? 5. High vibration NO or NC? 6. High motor temperature = NO or NC? 7. Low oil pressure NO or NC?

QI) The following PLC program was written to control the operation of a large electric motor- driven pump. A variety of "permissive" inputs protect the pump from damage under abnormal conditions, and one permissive in particular ("valve open") will only allow the pump to start up if one of the valves in the piping system is in the full-open position: Start Valve open Motor (s)- Stop Motor (R)H Bearing temp. Vibration Motor temp. Oil pressure Identify the type of contact (either NO or NC) necessary for each of these electrical switch contacts, based on the trip condition (either high or low) and how each input is applied in the PLC program: 1. Start pushbutton = NO or NC? 2. Throttling valve open limit NO or NC? 3. Stop pushbutton = NO or NC? 4. High bearing temperature NO or NC? 5. High vibration NO or NC? 6. High motor temperature = NO or NC? 7. Low oil pressure NO or NC?

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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Q1) The following PLC program was written to control the operation of a large electric motor- driven pump. A variety of "permissive" inputs protect the pump from damage under abnormal conditions, and one permissive in particular ("valve open") will only allow the pump to start up if one of the valves in the piping system is in the full-open position: Start Valve open Motor Stop Motor (R) Bearing temp. Vibration Motor temp. Oil pressure Identify the type of contact (either NO or NC) necessary for each of these electrical switch contacts, based on the trip condition (either high or low) and how each input is applied in the PLC program: 1. Start pushbutton = NO or NC? 2. Throttling valve open limit = NO or NC? 3. Stop pushbutton NO or NC? 4. High bearing temperature = NO or NC? 5. High vibration NO or NC? 6. High motor temperature = NO or NC? 7. Low oil pressure = NO or NC?
Transcribed Image Text:Q1) The following PLC program was written to control the operation of a large electric motor- driven pump. A variety of "permissive" inputs protect the pump from damage under abnormal conditions, and one permissive in particular ("valve open") will only allow the pump to start up if one of the valves in the piping system is in the full-open position: Start Valve open Motor Stop Motor (R) Bearing temp. Vibration Motor temp. Oil pressure Identify the type of contact (either NO or NC) necessary for each of these electrical switch contacts, based on the trip condition (either high or low) and how each input is applied in the PLC program: 1. Start pushbutton = NO or NC? 2. Throttling valve open limit = NO or NC? 3. Stop pushbutton NO or NC? 4. High bearing temperature = NO or NC? 5. High vibration NO or NC? 6. High motor temperature = NO or NC? 7. Low oil pressure = NO or NC?
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