**[Inverter single-phase 0.5 horsepower EL delta series 0.4 kW model VFD004EL21](https://www.automation24.ir/product-765/%25D8%25A7%25DB%258C%25D9%2586%25D9%2588%25D8% 25B1%25D8%25AA%25D8%25B1-%25D8%25AA%25DA%25A9%25D9%2581%25D8%25A7%25D8%25B2-0.5-%25D8%25A7%25D8%25B3%25D8%25A8-%25D8%25B3 %25D8%25B1%25DB%258C-el-%25D8%25AF%25D9%2584%25D8%25AA%25D8%25A7-0.4-%25DA%25A9%25DB%258C%25D9%2584%25D9%2588-%25D9% 2588%25D8%25A7%25D8%25AA-%25D9%2585%25D8%25AF%25D9%2584-vfd004el21)**\r\n\r\n\r\nThe VFD-EL inverter series is a new generation of AC drive that has various performance capabilities. This device has an internal EMI filter and RFI switch, it has high accuracy in detecting the amount of current and is protected against motor overload, this drive has an internal keypad that is connected to the inverter.\r\n\r\n\r\n\r\n\r\n## **Specifications of Delta EL series inverter:**\r\n\r\nIt has an output frequency of 0.1~600Hz\r\nIt has an adjustable V/F curve with three adjustment points\r\nIt has internal PID feedback control\r\nHas an internal EMI filter (for 230V single-phase and 460V three-phase models)\r\nAbility to use connection line (RS-485 and RJ-45) with Modbus protocol\r\nIt has optional communication modules for multiple communication protocols, for example, Profibus, Devicenet, LonWorks and CAN open.\r\nFunctional with full protection\r\n\r\nInverters:\r\n\r\nInverter or AC drive is a device that can be used to control the speed of a three-phase AC motor without reducing the power and torque of the motor.\r\n\r\nTypes of inverters in terms of input:\r\n\r\nInverters are classified into three-phase and single-phase categories in terms of input. Of course, their outputs are all three phases.\r\n\r\nWhat are the types of inverters in terms of application?\r\n\r\n\r\n\r\n\r\n**[Click here to view Delta products.] %25B1%25D8%25AA%25D8%25B1+%25D8%25AF%25D9%2584%25D8%25AA%25D8%25A7&in_description=1&pageItems=120)**\r\n\r\n\r\n\r\nIn terms of applications, inverters are divided into different categories. Inverters are used to start pumps, fans, elevators, cranes, conveyors, extruders, etc. Variable torque inverters are used for pumps and fans, constant torque inverters are used for elevators, conveyors, and cranes, and PG feedback inverters are used for extruders.\r\n\r\n### **Advantages and uses of inverter:**\r\n\r\nEngine speed regulator (speed control)\r\nChanger of direction away easily and without the need of a contactor\r\nTurning on and off the engine without the need to disconnect and connect the main power\r\nReducing mechanical shocks and thus increasing the useful life of the mechanical part\r\nProtecting the motor against voltage increase and preventing damage to the motor\r\nSoft launch without any shocks\r\nMotor protection against overload\r\n\r\n\r\n\r\nIn general, inverters are used in three areas:\r\n\r\nConstant torque activities such as mixers, extruders\r\nConstant power activities such as traction and mechanical devices\r\nVariable torque activities such as fans and pumps
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