Absolutely. And don't believe anyone who says otherwise. Just be sure to make it clear that you will be powering a VFD because it may change the size recommendation.

A variable frequency drive (VFD) refers to AC drives only and a variable speed drive (VSD) refers to either AC Drives or DC Drives. VFD's vary the speed of an AC motor by varying the frequency to the motor. VSD's referring to DC motors vary the speed by varying the voltage to the motor.

Yes, the AC drive can save you money on operating cost, when the load and motor speed can be varied. By reducing the speed of the motor, you will consume less energy, which will reduce your electric bill.

EMS improves the quality of the power supplied to a VFD or VSD. EMS will make these drives last longer. EMS must be installed upstream of the VFD or VSD, or it will have adverse effect on the

Yes, a variable frequency drive can replace a soft start starter, since most drives give you a current limiting ramp to start and stop your motor. BUT, if you do not need to vary the production speed of your motor, then the soft start starter is still the correct product for the application. This is because the cost of the soft start starter is less than the cost of a variable frequency drive.

Because of the nature of the descending torque load itself, the magnetic-coupled drive takes advantage of the energy savings with variable speed. Graph] The magnetic-coupled drive will take advantage of the affinity laws on variable torque loads such as centrifugal fans and pumps and does so without altering the voltage or interrupting power to the motor. Even with the motor running continuously, the kW required by the motor changes according to the actual load, i.e.

The magnetic coupling is electrically isolated from the motor and in effect operates as an infinitely variable, frictionless clutch, allowing the motor to operate as originally designed, at full speed continuously, and with pure uninterrupted ac power. Regardless of the drives' operating speed, the motor never sees any additional heating contributed by the drive. In fact, any additional heat is dissipated by the drive itself, via slip, and not the motor.

The drive can be "tuned" to the application to achieve maximum output of the equipment. Sometimes this is slightly under the base speed of the motor, and sometimes, it is over the base speed of the motor. Since every application is different, contact us through an email or the phone to discuss your application in detail and discover how we can help improve your companies' production output.

In constant torque applications, the drive must be properly sized to allow for additional drive heat dissipation at the lower speed ranges, however there are no added demands on the motor other than the conventional no load to full load conditions, the same as in fixed speed operation considerations. These drives perform excellently in many other applications, such as conveyors, feeders, straighteners, winders, mixers, machine tools, punch presses, etc.

If we do not state the speed, then we recommend you presume it to be 1, that way you will not be disappointed with your purchase (it may indeed be faster than 1, but we refuse to knowingly oversell an item, honesty is the best policy!).

Although these frequency bands are standard for our products, if you have alternative frequency specifications please discuss these with our sales team.

There are 2 main reasons for purchasing a variable-speed, 2-stage gas furnace: comfort and energy savings. Comfort: a 2-stage variable speed gas furnace distributes the air around your house more evenly, which results in better heating or cooling distribution. These types of furnaces make much less noise, which means less white noise in the background. Less noise, better heat distribution = more comfort.

Along with the reasons for purchasing a furnace with a variable speed blower system, consumers are now buying a modulating gas furnace because it offers the maximum efficiency (95%) throughout the entire modulating range. Modulating means the furnace raises and lowers the heat output of your furnace automatically, from 30% to 100%, and anywhere in between.

Variable speed air handling equipment runs at very low speeds, which keeps the air circulating against the cooling coil and removes much more moisture than conventional systems. At these low speeds, the variable speed motor uses much less electricity than conventional motors. Humidity is a problem in many areas. The best way to control excessive humidity is to have a system that runs longer at lower speeds.

This means that you can adjust the speed to any speed within the limitations of the engine and gearbox. Most mowers have either high or low or they have 1 through 5 gears. These units must go the speed of the gear you're in or you must manually change the shifter. This can make maneuvering a lot of work. With Swisher it is as easy as pushing down or letting off of the pedal with your foot. This is just one more reason why the Swisher Zero-Turn Radius has been sold for over 45 years.

Enter the pump data as a polynomial in the Pump Specifications window and then set the pump speed directly. No entry is assumed to be 100% speed. If you enter something other than 100%, AFT Fathom uses the affinity laws to adjust the curve.

Enter the fan data as a polynomial in the Compressor/Fan Specifications window and then set the fan speed directly. No entry is assumed to be 100% speed. If you enter something other than 100%, AFT Arrow uses the affinity laws to adjust the curve.

The moderns stepper motors can reach rotation speed of 1500 RPM. It must be considered that the motor torque curve decrease considerably with the increasing of the step frequency. If we take a screw of 4 mm and we run it at 1500 RPM we obtain a displacement speed of 1500*4mm=6000mm/min or 6 m/min. In practice the stepper motors runs at max 600 RPM because the torque decrease above that values.

The 90 Volt DC motor offers far more torque than the 1/2 HP AC/DC motors we used to use. (It is also much smoother and quieter.) The electronic speed control adjusts automatically for any voltage world wide from 100 to 240 volts, 50 or 60 Hz. (For more details, see complete motor specifications and torque curve chart in the file on Sherline tool dimensions.) An electronic circuit in the new speed control unit also compensates for load, keeping the RPM more constant during cuts.

The Dimming Module is designed to control both lamp and motor loads. Each leg will control up to a 1/8 HP variable-speed motor load, and with ganging up to a 1 HP motor may be controlled.