many drive choices are available from a large number of venders around you. In order to make a good decision when selecting a variable frequency drive, some factors need to be considered. The alternate current is converted to the direct current in order to improve the speed of the motor by the variable frequency drive. in varying the frequency to drive the output motor, the speed control portion of the drive uses the direct current voltage to create the direct current pulses. the motor speed matters with the number of poles the motor was designed to operate with. so as to help you come to a good choice of the variable frequency drive, below are some factors outlined for you.
One of the many factors to consider when making a choice on matter concerning a good variable frequency drive is the demands of the loads or processes in your planned system. This is because some loads are hard to start. an oversized unit is needed to cover the higher current demands of the hardtop start loads due to the limited over current capacity of the variable frequency drive.
The number of motors the drive will control is the second factor needed to be considered when selecting the variable frequency drive. the way the motors are going to be started whether sequentially or simultaneously determines the selection of the variable frequency drive. the loads under the worst operating conditions also help to determine the kind of variable frequency drive to select which is concluded after calculating the total peak of currents in the motor.
when selecting the variable frequency drive the third factor to put into consideration is the quick start or sudden stop of the load. If that is the case high currents will be required of the variable frequency drive thus an oversized drive will be necessary. to make the drive’s size bigger will improve the working of the variable frequency drive.
The fourth factor to be put into consideration when choosing a variable frequency drive is the range of the motor sizes your process or processes require the variable frequency drive to handle. Since small motors cannot perform as well as the larger ones, improvements will be required due to the variable frequency drive apparent.
Another factor to consider when making a choice concerning the variable frequency drive is the need of equipment or drive features that will ensure continuity in procession. you should be aware that you might have a drive that trips instantly in an overcurrent condition. The above factors can be of great help if put into consideration before a selection of the variable frequency drive.