Nilfisk-ALTO SCRUBTEC R 466 Service Manual

Also see for SCRUBTEC R 466: User manual

Contents

Control System26Service Manual – SCRUBTEC R466 ... FOCUS II Micro RiderFunction Electronic Board Alarm Codes (continued)P100686 P100690Drive system alarmsAlarm on the function electronic board - YELLOW LED FLASHINGAlarmCodeon thedisplayNo. offlasheson theboardMeaning Condition Troubleshooting actiont2 2 Amperometricprotectionintervention.Current draw into the drive motorhigher than theparameter (seepage 32 - 33)“INOM“ for morethan parameter(see page 32 - 33)“TMAX“ time.Check the drive motor current draw: it has to be 6-8 amps without load and ithas to remain under 20 amps during operation.t3 3 Electromagneticbrake not presentOpen circuitbetween J5.1 andJ5.21. Check the continuity of the 2 wires of the electrobrake of the motorwheelup to the 2 way connector J5 on the board.2. Check for the electrobrake impedance: has to be about 40 Ohms.3. If necessary substitute the electrobrake.t4 4 Pedal inputactivated byignition.Pedal output onJ3.8 higher thanthe parameter(see page 32 - 33)“DEADL” whenthe machine wasswitched on by thekey.1. Check that the pedal returns into its released position when not pressed.2. If necessary substitute the pedal.t5 5 Drive systempower sectiondamage.Internal boardmosfet short circuit.1. Check any short in the main motorwheel wires.2. Try to disconnect the 2 Ø6 mm fast connectors M1 and M2 from theboard, switch on the machine and press the pedal.3. If the alarm still appears, substitute the board.t6 6 Pedal input notadmitted.Open circuitbetween J3.7 andJ3.9 or pedal outputon J3.8 higher than5 Volt.Check the wiring from the pedal and the J3 connector pins 7, 8, 9.From the battery – you have to measure:- About 5 Volt on pin 7.- From 0.7 to 4.5 Volt on pin 8 (it has to change moving the pedal).- About 0 – 0.7 Volt on pin 9.t7 7 Overcurrent(motor D.C.).Drive motor currenthigher than 1.5times the valueof the parameter(see page 32 - 33)“IMAX”.1. Check any short in the main motorwheel wires.2. Check the impedance of the motorwheel motor: it has to be about 0.6 –0.8 Ohms.3. If necessary substitute the motorwheel motor.t8 8 Drive systemrelay fault.The Drive systemrelays inside theboard is stuck(always closed oralways open).Substitute the board.All the drive system alarms activates to cut off the power supply to the driving wheel motor (not to the ELEC-TROMAGNETIC BRAKE), until reset from KEY input [except alarm t4 which is reset as soon as J3.8 voltage(drive pedal output) became less then the value of the parameter “DEADL” (see table “Function electronicboard parameters” page 32 - 33). In case of simultaneous errors, the one with greater priority is shown first(priority order is opposite to the number of flashes).