Torque is the measure of the turning force of an object about an axis.  When applying  a variable speed drive to a motor application it is critical to consider the torque requirement of the load.

Variable speed drives manufacturers generally assign their drives into one of three categories according to their torque and power capabilities.  Importantly the category also defines the pricing, so it is important to select the correct drive. 

 In variable torque applications they offer significant energy savings-see example.  For constant power and constant torque applications variable speed drives simplify and improve control and provide better surface finishing.

If you would like help or advice with the selection of an inverter drive for your application, or would like to borrow an inverter for evaluation, please email us with the details at enquiries@999inverters.com

Constant torque

 The majority of general machinery applications will fall into this category, which includes: conveyors; displacement pumps; conveyors; hoists; conveyors; printing presses; positive displacement pumps; reciprocating and rotary compressors, as well as many other.

Constant power

These will include machine tool applications such as CNC machining centre, lathes, grinders; drilling machines and borers etc.

Variable torque

Typically these are flow applications such as centrifugal fans, pumps and blowers fans, turbine pumps, agitators, and axial compressors.  Manufacturers generally refer to these as fan and pump drives.

Contact us at enquiries@999inverters.com or see our product offering at www.999inverters.co.uk