Nilfisk-Advance SC500 Service Manual

Also see for 9087350020: Service manual Service manual

Contents

Nilfisk-Advance SC500 Service Manual Manual pdf 20 page image

Control System19Service Manual – SC500Control SystemFunctional DescriptionThe architecture of the electronic control system forthe machine’s electrical components is composed ofa Function Board (EB1) and a Display Board (EB2),in turn connected to a Dashboard Instrument Board(EB3) which represents the main user interfaceThe function board (EB1) manages all componentsand drives the following components directly:- Drive system motor (M3)- Vacuum system motor (M2)- Deck actuator (M5)- Brush motor (M6)- Solution flow solenoid valve (EV1)- Detergent pump (M4)The Display Board (EB2) serves mainly as an ag-gregator for all input signals (buttons) and outputs(LEDs) from the Dashboard Instrument Board (EB3),which it is connected to via 2 flat cables.Mounted on the Display Board (EB2) is also the LCDdisplay and the 2 sensors which detect the presenceand type of magnetic key inserted in the dashboardThe display electronic board (EB2) sends all the inputand output signals of these components to the func-tion electronic board (EB1) using 2-wire 2-way serialcommunications protocolThe system is completed by the on-board batterycharger which also uses a proprietary serial protocolto communicate with the Function Board (EB1), in or-der to display its operating status (charging phase) tothe operator on the LCD displayWiring DiagramJ1.5J1.4J1.3J1.2J1.1J3J2J3.1J3.2J3.3J3.4J3.5Dashboard power supply +Dashboard serial +Dashboard serial -Dashboard power supply -Return from keyFCI DUFLEX (2.54 pitch) 8-way, male pinsFCI DUFLEX (2.54 pitch) 9-way, male pinsDashboard power supply +Dashboard serial +Dashboard serial -Dashboard power supply -Return from keyB-B+SCHEDA DISPLAY (EB2)BATT +BATT -MicroprocessorMicroprocessorSIGNAL CIRCUITSFUSE (F2)FUNCTION ELECTRONICBOARD (EB1)DASHBOARDINSTRUMENTBOARD (EB3)Figure 1