AC DRIVE VSDVARIABLESPEEDDRIVES

VFDVARIABLEFREQUENCYDRIVES

Speed

Torque

Electricity

1200 RPM

VARIABLE SPEED CONTROL

Mechanical Controls

1500 RPM

MOTOR NOMINAL SPEED

AC SUPPLYINPUT POWER

3-

ELECTRICAL WAVE

INPUT POWER

ACPOWER

RECTIFIERINPUT POWER

CONVERTS AC POWER TO DC POWER

DCPOWER

INVERTERINPUT POWER

CHANGE THE DC POWER TO THE OUTPUT AC POWER

DC/ACPOWER POWER

PWM ACPulse-width modulation

The drive calculates the motor’s required voltage and current. DC power is then fed into an inverter producing AC power at the

precise voltage and current needed.

DC power is fed into capacitors, smoothing the

wave and

producing a clean DC

supply.

CAPACITORSSMOOTH THE ELECTRICAL WAVE FORM

INPUT POWER

DCPOWER

SMOOTH THE ELECTRICAL WAVE

CLEAN POWER SUPPLY

What is an AC drive?

Motors move and run

basically everything

we need for business or pleasure. And all these

motors run on electricity.

Making sure the

motors use electricity efficiently helps you save energy and reduce costs. So how can you do that?

You can do that with

AC drives

Unlike mechanical controls (like throttles),

drives vary the electrical frequency and voltage

fed to the motor.This means the motor uses only the electricity needed

– helping you save huge

amounts of energy.

How do drives convert

fixed frequency and voltage

power into

variable frequency

and voltage power for the motor?

Incoming

3-phase AC power

is fed into a rectifier that converts it to

DC power.

The drive

continuously calculates

and adjusts the frequency and voltage

providing only the power the motor needs.

This is how you can

save large amounts of

energy.

And that’s why we have developed a

wide range of drives to work with your application, no matter how small or large.

When it comes using drives in your business, understanding energy use and

reducing CO2 emissions,

everything counts.