Variable Speed Drives

1 April 2016

Effects on life expectancy of variable speed drives

Written by Halcyon Drives

The average life of a variable speed drive (VSD) is around 15 years, but some would take issue with this assertion. There are examples of variable speed drives running perfectly well for 35 years plus, without being touched. Then there are examples of VSD’s which have been completely destroyed .....

9 December 2015

VIDEO: What is PID loop control?

Written by Halcyon Drives

PID closed loop control or proportional-integral-derivative control is a useful software tool that can be used within an ABB Variable Speed Drive. But what exactly is it?

The PID controller is the most commonly used method of closed looped control to a variable speed drive. This is predominantly used in industrial control systems to produce accurate and consistent operation.....