Industrial Automation, PLC, VFD, and Troubleshooting
Introduction
In industrial automation, the PLC does not physically “see” the machine, conveyor, door, bottle, box, valve, or actuator. The PLC depends on sensors to know what is happening in the …
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In industrial automation, sensors are one of the most important parts of a control system. A PLC can execute logic, energize outputs, control motors, start conveyors, open valves, and trigger …
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In industrial automation, sensors provide the feedback that allows a PLC to understand what is happening in the real machine. However, not all sensors send the same type of signal.
Some …
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Selecting the right sensor is not just about choosing a device that can detect something.
In industrial automation, the correct sensor must detect the right condition, at the right time, in …
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Ultrasonic sensors are industrial sensors used to detect distance, presence, or level by using sound waves.
Unlike photoelectric sensors, ultrasonic sensors do not depend on light reflection. This makes them useful …
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In industrial automation, not every feedback signal is a simple ON/OFF input.
Sometimes the PLC or controller needs to know:
How fast is the shaft moving?How far did the conveyor travel?What position …
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Industrial sensors are not installed only to turn a PLC input ON or OFF.
They are installed to give the PLC useful feedback from the real machine.
A sensor can tell the …
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