Advanced information is shown in italics, and may be skipped on first reading. Unlike a dc drive, the ac drive frequency control technique uses parameters generated outside of the motor as controlling variables, namely voltage and frequency. For a general description installation, technical data, etc. Dc1s variable frequency drives for singlephase ac motors. A variablefrequency drive vfd is a device that controls the voltage and frequency that is being supplied to a motor and therefore controls the speed of the motor and the system it is efficiency is improved. A vfd is capable of adjusting both the speed and torque of an induction motor. Powerxl da1 variable frequency drives parameter manual. Frequency drive vfd technology to assist in the effective understanding, selection, application, and.
Variable frequency drive vfd usage has increased dramatically. Minimize adverse motor and adjustable speed drive interactions. It includes an introduction to drives, which may be informative to first time users. Detailed technical information and complete parameter descriptions are available in the handbook. This manual is intended to help users of variable speed drives successfully install. This guide has been developed as an overview of variable. The speed of the rotating magnetic field can be determined as. Both voltage and frequency reference are fed into a modulator which simulates an ac sine wave and feeds this to the motors stator windings. Variablefrequency drives are also known as adjustablefrequency drives afd, variable. View pdf s of all technical documentation relating to vlt and vacon variable frequency drives and soft starters. For the rated cable crosssectional areas for da1 variable frequency drives, please refer to the technical data chapter in. Part of the electricians technical reference series, this field guide highlights how vdfs work, how to apply them, and how to troubleshoot them. Variable frequency drives read online popular books reads pdf electrician s technical reference. Variable frequency drives for singlephase ac motors installation.
815 1238 1471 700 1502 463 136 460 118 700 1267 987 821 1402 1149 1505 500 626 922 1432 709 1585 1488 471 1070 260 1523 132 119 1580 123 762 1379 933 897 1011 378 1514 474 116 438 1166 1347 66 1315 1031