Danfoss VLT AQUA Drive FC 202 Programming Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

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5 Troubleshooting5.1 Status Messages5.1.1 Warnings/Alarm MessagesA warning or an alarm is signaled by the relevant LED onthe front of the frequency converter and indicated by acode on the display.A warning remains active until its cause is no longerpresent. Under certain circumstances, operation of themotor may still continue. Warning messages may becritical, but are not necessarily so.An alarm trips the frequency converter. Reset alarms torestart operation once their cause has been rectified.This can be done in 3 ways• By pressing [Reset].• Via a digital input with the reset function.• Via serial communication/optional fieldbus.NOTICEAfter a manual reset pressing [Reset], press [Auto On] torestart the motor.If an alarm cannot be reset, its cause may not have beenrectified, or the alarm is trip-locked (see also Table 5.1).Alarms that are trip-locked offer extra protection, meaningthat the mains supply must be switched off before thealarm can be reset. After being switched back on, thefrequency converter is no longer blocked and may be resetas described above once the cause has been rectified.Alarms that are not trip-locked can also be reset using theautomatic reset function in parameter 14-20 Reset Mode.NOTICEAutomatic wake-up is possible!If a warning and alarm are marked against a code inTable 5.1, this means that either a warning occurs beforean alarm, or else that it is possible to specify whether it isa warning or an alarm that is to be shown for a givenfault.This is possible, for instance, in parameter 1-90 MotorThermal Protection. After an alarm or trip, the motor carrieson coasting, and the alarm and warning flash. Once theproblem has been rectified, only the alarm continuesflashing until the frequency converter is reset.NOTICENo missing motor phase detection (numbers 30–32) andno stall detection is active when parameter 1-10 MotorConstruction is set to [1] PM non-salient SPM.Num-berDescription Warning Alarm/Trip Alarm/Trip Lock Parameterreference1 10 volts low X – –2 Live zero error (X) (X) – Parameter 6-01 Live Zero TimeoutFunction3 No motor (X) – – Parameter 1-80 Function at Stop4 Mains phase loss (X) (X) (X) Parameter 14-12 Function atMains Imbalance5 DC-link voltage high X – – –6 DC-link voltage low X – – –7 DC overvoltage X X – –8 DC undervoltage X X – –9 Inverter overloaded X X – –10 Motor ETR overtemperature (X) (X) – Parameter 1-90 Motor ThermalProtection11 Motor thermistor overtemperature (X) (X) – Parameter 1-90 Motor ThermalProtection12 Torque limit X X – –13 Overcurrent X X X –Troubleshooting Programming GuideMG20OB02 Danfoss A/S © 05/2018 All rights reserved. 2835 5