Danfoss VLT AQUA Drive Design Manual

Also see for vlt aqua: Instructions Design guide Instruction manual Operating instructions Design guide

Contents

LCPThe Local Control Panel (LCP) makes up a complete interface for control and programming of theadjustable frequency drive. The control panel is detachable and can be installed up to 9.8 ft (3meters) from the adjustable frequency drive, i.e. in a front panel by means of the installation kitoption.The local control panel is available in two versions:- Numerical LCP101 (NLCP)- Graphical LCP102 (GLCP)lsbLeast significant bit.MCMShort for Mille Circular Mil, an American measuring unit for cable cross-section. 1 MCM 0.00079≡in.2 (0.5067 mm2 ).msbMost significant bit.NLCPNumerical Local Control Panel LCP101Online/Offline ParametersChanges to online parameters are activated immediately after the data value is changed. Changesto offline parameters are not activated until you enter [OK] on the LCP.PID ControllerThe PID controller maintains the desired speed, pressure, temperature, etc. by adjusting the out-put frequency to match the varying load.RCDResidual Current Device.Set-upYou can save parameter settings in four set-ups. Change between the four parameter set-ups andedit one set-up while another set-up is active.SFAVMSwitching pattern called Stator Flux oriented Asynchronous Vector Modulation (par. 14-00).Slip CompensationThe adjustable frequency drive compensates for the motor slip by giving the frequency a supple-ment that follows the measured motor load, thus keeping the motor speed almost constant.Smart Logic Control (SLC)The SLC is a sequence of user-defined actions executed when the associated user-defined eventsare evaluated as true by the SLC.VLT® AQUA Drive Design Guide 1. How to Read this Design GuideMG.20.N2.22 - VLT® is a registered Danfoss trademark. 91