RTD, Resistance Temperature Detector. In Industries Resistance Temperature Detector Used As Temperature Sensor. In Resistance Temperature Detector Resistance Change When Temperature Change. Resistance Of Rtd Wire Increases When Temperature Of Wire Increases. Commonly Resistance Temperature Detector Made Of Platinum, Copper, Nickel But Most Widely Used Material Is Platinum. In Resistance Temperature Detector Material Is Positive Temperature Coefficient Means When Material Temperature Increases Than Resistance Also Incenses.

Thermocouple Is An Instruments Which Are Used To Measure A Wide Range Of Temperatures In Industry. Thermocouple Used In Industries Where Accuracy Of Temperature Measurements Requires In Process And Safety.Thermocouple Convert Thermal Energy Into Electrical Energy. Output Of Thermocouple Is In Millivolt(Mv). The Output Voltage Of A Thermocouple Is Typically Measured Using A Voltmeter And Multimeter. Thermocouple Have Self Powered Capabilities No Need To Give External Power Supply. Easy To Interface With Plc.

Variable Frequency Drive (VFD), A Motor Drive Which Are Used To Control Controls The Speed, Torque, Direction Of A Motor By Varying Frequency Of Input Power. VFD Run An AC Motor At Variable Speeds Or Let Them Ramp Up Their Speed To Give Them A Smooth Startup. VFD First Converts Supply AC Input Into DC Than It Filter DC With A Capacitors Than It Will Convert The DC Into AC. VFD Used For Controlling Speed Of Belt Conveyor Belt, Fan, Blower, Pump, Compressors Etc.

You can explore the most commonly asked VFD interview questions, accompanied by detailed expert answers to help you grasp key concepts and effectively demonstrate your knowledge. Whether you’re a seasoned professional or new to the field, our resource is designed to support your success by covering essential topics, technical details, and practical insights.

What is jogging function of the the Jog Function of vfd is used to run the motor at a low speed for a short duration. this function is used for positioning or maintenance purposes.

braking system of vfd refers to the process of slowing down or stopping an electric motor quickly and efficiently. The motor continues to run after the VFD receives a stop command. The braking system in a VFD helps prevent damage to the VFD hardware components and avoids unnecessary system faults.