Variable Speed Drives | HVAC Control

by | Direct Digital Controls | 0 comments

Variable Speed DrivesIn HVAC a variable speed drive is a speed control system for electric motors. The variable speed drive (VSD) or variable frequency drive (VFD), among other names (adjustable-frequency drives (AFD), AC drives, micro-drives, or inverter drives). The application of variable speed drives has brought about a new way of engineering buildings and control systems HVAC.

The flow of water and air can now be regulated precisely using VSD’s and state-of-the-art control systems. By combining VSD’s with state-of-the-art control systems, large savings in energy usage can see realization because the exact quantity of flow of water or air can be delivered to satisfy demand.

Demand-based control is energy efficient. VSD’s can be stand-alone or controlled by a building automation system.

(more…)

Run Start Capacitors HVAC Motors

by | Technical Reference | 10 comments

What you will learn from Run Start Capacitors | Electrical Basics :

  1. Common uses for motor capacitors heating and air systems
  2. Capacitor Types for HVAC Motor Applications. The two different types of capacitors used for HVAC - Motor Run Capacitor and the Start Capacitor
  3. How capacitors are made
  4. Rules for replacing a motor capacitor
  5. Motor capacitor safety measures
  6. Lots of valuable related links to give you a closer look so you will learn more about HVAC
(more…)