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A motor soft starter is a device used with AC electrical motors to temporarily reduce the load and torque in the powertrain and electric current surge of the motor during start-up. This reduces the mechanical stress on the motor and shaft, as well as the electrodynamic stresses on the attached power cables and electrical distribution network ...
Allen-Bradley is the brand-name of a line of factory automation equipment owned by Rockwell Automation.The company, with revenues of approximately US $6.4 billion in 2013, manufactures programmable logic controllers (), human-machine interfaces, sensors, safety components and systems, software, drives and drive systems, contactors, motor control centers, and systems of such products.
It was founded by Dr. Stanton Allen and Lynde Bradley with an initial investment of $1000. [2] In 1904, 19-year-old Harry Bradley joined his brother in the business, and the company's first patented product, a carbon disc compression-type motor controller for industrial cranes, was demonstrated at the St. Louis World's Fair the same year. In ...
A programmable logic controller (PLC) or programmable controller is an industrial computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis.
A magnetic starter has a contactor and an overload relay, which will open the control voltage to the starter coil if it detects an overload on a motor. [1] [2] The overload relay opens a set of contacts that are wired in series with the supply to the contactor feeding the motor. The characteristics of the heaters can be matched to the motor so ...
NEMA (National Electrical Manufacturers Association) contactors and motor starters are rated by sizes. These sizes are grouped by rated current and power. [1] [2]