Variable speed drives – Are you missing a trick?

Don’t make the mistake of dismissing VSDs as nothing more than motor controllers, says ABB’s Carl Turbitt. To use a drive merely to start and stop a motor and alter its speed is to miss the huge cost saving potential built within the product. Panels containing control gear for air handling units, fans and pumps are used extensively throughout modern buildings. Within these panels are VSDs and a host of additional components including thermostats used…