31. PLC Preventive Maintenance: Keeping Control Systems Reliable ( 31 of 35 )


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A PLC system can run for years with very few problems, but that does not mean it should be ignored.

A PLC panel needs preventive maintenance just like motors, gearboxes, sensors, …

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1. What Is Industrial Electricity and Why Automation Technicians Need It?


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Industrial automation depends completely on electricity.

A PLC cannot read a sensor without electrical power. A VFD cannot control a motor without a three-phase supply. A solenoid valve cannot move without …

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