The correct selection of frequency converters is very important for the normal operation of the drive control system of mechanical equipment. First of all, the purpose of selecting the inverter should be clearly defined. Second, the appropriate inverter should be selected according to the requirements of equipment type, load characteristics, speed range, control mode, use environment, and protective structure. In this way, to achieve the goal of not only satisfying the production process, but also achieving economic benefits.
Inverter manufacturers mostly provide the following common protective structures for users to choose.
(1) Open type IP00, which protects the human body from touching the live parts inside the inverter from the front. It is suitable for installation on the screen, panel, and rack in the electric control cabinet or electric room, especially when multiple inverters are used in a centralized manner Good, but it has higher requirements for the installation environment.
(2) Closed type IP20, IP21, this kind of protective structure has an outer cover around the inverter, which can be wall-mounted on the wall in the building. It can be used in places with a small amount of dust or a little temperature and humidity. Most indoor installation environments.
(3) Sealed type IP40, IP42, it is suitable for occasions with poor environmental conditions in the industrial field.
(4) Closed type IP54, IP55, it has a dust-proof and water-proof protective structure, which is suitable for industrial scenes with poor environmental conditions, water, dust and certain corrosive gases.
The frequency conversion speed control system used at the project site should be selected according to your actual process requirements and application occasions. The pros and cons should be weighed, reasonable selection, and comprehensive consideration. Only when the frequency converter is used correctly and flexibly, the AC frequency conversion speed regulation system can operate safely and reliably.