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Motor Trip Logic using PLC Programming

S Bharadwaj Reddy
Programmable Logic Controller (PLC) Questions and Answers This PLC is being used to start and stop an electric motor, and also to shut it down automatically if any of three

PLC Pump Permissive Interlocks

S Bharadwaj Reddy
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

PLC Electric Motor Interlocks

S Bharadwaj Reddy
Programmable Logic Controller Questions and Answers 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

PLC Ladder Logic Questions and Answers

S Bharadwaj Reddy
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Programmable Logic Controller (PLC) Questions and Answers – 21

S Bharadwaj Reddy
Allen-Bradley MicroLogix  Programmable Logic Controller : Suppose we have an Allen-Bradley MicroLogix 1000 PLC and two pressure switches we need to connect to it: Determine the necessary contacts on each

Programmable Logic Controller (PLC) Questions and Answers – 20

S Bharadwaj Reddy
Programmable Logic Controllers Questions and Answers Suppose we have a PLC connected to three pushbutton switches as shown in this illustration: Sketch a Ladder Diagram program for this PLC to

Programmable Logic Controller (PLC) Questions and Answers – 19

S Bharadwaj Reddy
Programmable Logic Controller Questions and Answers Suppose we have a PLC connected to three pushbutton switches as shown in this illustration: Sketch a Ladder Diagram program for this PLC to

Programmable Logic Controller (PLC) Questions and Answers – 18

S Bharadwaj Reddy
PLC Questions and Answers  Suppose we have an Allen-Bradley MicroLogix 1000 controller connected to three process switches as shown in this illustration: Determine the necessary switch actuation statuses (i.e. low

Programmable Logic Controller (PLC) Questions and Answers – 17

S Bharadwaj Reddy
Allen-Bradley Programmable Logic Controller (PLC) Questions and Answers Suppose we have an Allen-Bradley MicroLogix 1000 controller connected to three process switches as shown in this illustration: Determine the necessary switch

Programmable Logic Controller (PLC) Questions and Answers – 16

S Bharadwaj Reddy
AB Programmable Logic Controller (PLC) Questions and Answers Suppose we have an Allen-Bradley MicroLogix 1000 controller connected to three pushbutton switches as shown in this illustration: Determine the necessary switch

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