Frequency inverter including power-line filter and main switch to regulate the extraction volume of a central filter system. Input signal coming from IF-15 or PT-1000. Insulation class: IP 55.
Fan equipment for fume extraction is often used without speed of flow control. Instead, flow is traditionally controlled by throttling with a valve or damper or worse no control at all. When flow is controlled without regulating the motor speed, the fan motor continuously runs at full speed. Because welding fume control systems rarely require maximum flow, a system operating without speed control wastes significant amounts of energy over most of its operating lifetime.
Using a variable frequency drive (VFD) to control the motor speed can save up unexpected amounts of energy and consequently also money, there are also the following advantages:
- Decrease in carbon footprint
- Less sound pressure
- Longer filter life
- Less compressed air consumed for filter cleaning