When choosing a motor for a credit card applicatoin, a primary consideration may be the speed range it’ll be operated in. Whenever a motor is operate substantially slower than its ranked base speed, several potential adverse effects may come into play, including reduced cooling efficiency, reduced power effectiveness and a alter in the motor’s quickness and torque characteristics. To mitigate this problem, some motors and acceleration controllers have already been designed especially to drive a load at low speeds with specific control.
Most domestic and commercial motor applications use 3-phase asynchronous induction motors, which operate at a speed that is dependant on the frequency of the supply power. When a credit card applicatoin operates at a continuous speed, the thing that is necessary could be a gearbox or velocity reducer that brings the engine speed down to the required level. However, many applications require the velocity of the engine to be different during operation.
This is usually achieved utilizing a VFD or Variable Frequency Drive, which controls the speed by modifying the frequency fed to the motor. Selecting the most appropriate engine and VFD type depends on a variety of factors, however, it’s important to first look at how the characteristics of a engine change when the swiftness is reduced.
A motor usually has a base speed, specific by the product manufacturer, that it is made to operate at. Nevertheless, if a motor is managed below the base speed, it could experience reduced performance of the cooling system. Especially with commonly used Totally Enclosed Fan Cooled (TEFC) and ODP (Open Drip Evidence) motors, where the cooling system consists mainly of a shaft-mounted fan, a decrease in speed outcomes in decreased airflow over the electric motor and lack of cooling, and heat buildup occurs. Particularly when the engine is operated with complete torque at low speeds, heat can quickly build up in the motor to harmful levels.
Gearboxes and swiftness reducers are mechanical speed reduction equipment found in automation control systems.