Danfoss VLT AQUA Instruction

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

Contents

6.2 How to Program the Active FilterThe factory settings for the filter part of the Low Harmonic Drive are chosen for optimal operation with a minimum of additional programming. All CT-values, as well as frequency, voltage levels and other values directly linked to the drive configuration are pre-set.It is not recommended to change any other parameters influencing the filter operation. However, the selection of readouts and what information to bedisplayed on the LCP status lines can be made to fit individual preferences.To set up the filter, two steps are necessary:• Change the nominal voltage in par. 300-10• Make sure the filter is in auto mode (press the Auto On button on the LCP)Overview of parameter groups for the filter partGroup Title Function0- Operation/Display Parameters related to the fundamental functions of the filter, function of the LCP buttonsand configuration of the LCP display.5- Digital In/Out Parameter group for configuring the digital inputs and outputs.8- Communication and Options Parameter group for configuring communications and options.14- Special Functions Parameter group for configuring special functions.15- Unit Information Parameter group containing active filter information such as operating data, hardwareconfiguration and software versions.16- Data Readouts Parameter group for data readouts, such as current references, voltages, control, alarm,warning and status words.300- AF Settings Parameter group for setting the active filter. Apart from par. 300-10,Active Filter NominalVoltage, it is not recommended to change the settings of this parameter group301- AF Readouts Parameter group for the filter readouts.Table 6.4: Parameter groupsA list of all parameters accessible from the filter LCP can be found in the sectionParameter Options - Filter. A more detailed description of the active filterparameters can be found in the VLT Active Filter AAF005 Manual,MG90VXYY6.2.1 Using the Low Harmonic Drive in NPN ModeThe default setting for par. 5-00,Digital I/O Mode is PNP mode. If NPN mode is desired, it is necessary to change the wiring in the filter part of the LowHarmonic Drive. Before changing the setting in par. 5-00 to NPN mode, the wire connected to 24 V (control terminal 12 or 13) must be changed toterminal 20 (ground).6 How to Program the Low Harmonic DriveVLT AQUA Low Harmonic Drive InstructionManual6-8 MG.20.T1.22 - VLT® is a registered Danfoss trademark6