When should you use a drive and when do you not want to use a drive? It is a question that gets asked all the time. How does one know when to use a AC VFD versus when to use a device like a rotary phase converter. It comes down to the type of application. We usually like to qualify by asking the following question; What is it that you are trying to control? Are you trying to control a motor? Or are you trying to provide a general power to be able to use for just about anything 230V/3PH/60HZ?
If you are actually trying to directly control the speed of a 3 phase inverter duty motor and intend to directly connect to that motor then this the type of device for you. If you are just trying to convert from a single phase scenario to 3 phase to be able to run
general equipment, then a rotary phase converter is the better tool for the job as a variable frequency drive is not a good selection as it requires a dedicated motor.
Next step, how do I pick the right drive. Without getting into to many details. Lets define the application, your horsepower of you motor, your voltage that is available from your panel board, you voltage for the current of future motor. Once that selection is made, then lets discuss the actual application. What is the motor controlling; A fan, a pump motor, a belt conveyor, a vertical milling machine, a lathe, blowers, vacuum systems, etc. This will direct to the basic type of AC VFD to be used; either a Volts/Hertz drive (Constant torque) or Sensor/Sensorless Vector drive type (Variable Torque). Some drives are specific (older generation type drives) and more modern drives can accommodate all modes into a single drive.
Using our web configurator, you can shop by Brand, Type of Drive/Application Topics, Input Voltage, Price Range, Housing Type, Horsepower, Available Options. You can keep narrowing your search down until a few. Once you pick a brand and family or series of drive, you can get to the landing page. After reading through the page, you can also find a copy of the manufacturers catalog or specification sheet and even the operating manual at times. To configure a part number to obtain a price, click the orange button in the upper right hand corner of the page. This will take you to a series of drop down menus. Typically it will ask you to select voltage and or phase if choices are provided, then you would select your horsepower. The system will then generate a part number and a price. You can add to you cart and continue to shop for a multitude of accessories that are associated with that specific drive. Click here to get started searching!
You could also continue to shop for items such as, added NEMA rated enclosures, optional push buttons, selector switches, emergency stops, etc to where you could build a custom with standard product to make, remote operators, and indoor or outdoor rated applications. You could also have our company build you a custom panel with basics or outfitted with standard options and or total customs.
Contact Marshall Wolf Automation today, we are your authorized distributor for: AC Tech Lenze, Hitachi, Fuji, TECO Westinghouse, Delta Industrial Automation, Gefran, WEG, U.S. Drives.