Danfoss VLT AQUA Drive FC 202 Operating Instructions Manual

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

Contents

8 Warnings and Alarms8.1 System MonitoringThe frequency converter monitors the condition of itsinput power, output, and motor factors as well as othersystem performance indicators. A warning or alarm maynot necessarily indicate a problem internal to thefrequency converter itself. In many cases, it indicates failureconditions from input voltage, motor load or temperature,external signals, or other areas monitored by the frequencyconverter’s internal logic. Be sure to investigate those areasexterior to the frequency converter as indicated in thealarm or warning.8.2 Warning and Alarm TypesWarningsA warning is issued when an alarm condition is impendingor when an abnormal operating condition is present andmay result in the frequency converter issuing an alarm. Awarning clears by itself when the abnormal condition isremoved.AlarmsTripAn alarm is issued when the frequency converter istripped, that is, the frequency converter suspendsoperation to prevent frequency converter or systemdamage. The motor will coast to a stop. The frequencyconverter logic will continue to operate and monitor thefrequency converter status. After the fault condition isremedied, the frequency converter can be reset. It willthen be ready to start operation again.A trip can be reset in any of 4 ways• Press [Reset] on the LCP• Digital reset input command• Serial communication reset input command• Auto resetAn alarm that causes the frequency converter to trip-lockrequires that input power is cycled. The motor will coast toa stop. The frequency converter logic will continue tooperate and monitor the frequency converter status.Remove input power to the frequency converter andcorrect the cause of the fault, then restore power. Thisaction puts the frequency converter into a trip condition asdescribed above and may be reset in any of those 4 ways.8.3 Warning and Alarm Displays130BP085.11Status0.0Hz0.0Hz1:0 - Off!Live zero error [W2]Off Remote Stop!1(1)Illustration 8.1 Warning DisplayAn alarm or trip-lock alarm will flash on display along withthe alarm number.130BP086.11Status0.0Hz0.0Hz0Earth Fault [A14]Auto Remote Trip1(1)Illustration 8.2 Alarm DisplayIn addition to the text and alarm code on the frequencyconverter LCP, there are three status indicator lights.Autoon ResetHandon OffBackCancelInfoOKOnAlarmWarn.130BB467.10Illustration 8.3 Status Indicator LightsWarnings and Alarms VLT® AQUA DriveOperating Instructions52 MG20M902 - VLT® is a registered Danfoss trademark88Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: info@ctiautomation.net