Active Front End (AFE)vacon • 2124-hour support +358 (0)201 212 575 • Email: vacon@vacon.com44.2Active Front End Unit block diagramFigure 9. NXA block diagramB+B-U/T1V/T2W/T3RS-23211170.emfPower ModuleControl ModuleKeypadControlDriverMeasure-mentsPowersupplyFanASICIGBTbridgeI/Oslot EI/Oslot DI/Oslot CI/Oslot AI/Oslot B