WEG CFW900 - Page 69

English
TROUBLESHOOTINGANDMAINTENANCE
Protection/AlarmDescriptionPossiblecauses
F078:
MotorOvertemp.
FaultrelatedtothePTCtemperaturesensorinstalled
onthemotor.
Note:
-Thefaultcanbedisabledbysetting C7.5.2=2or
3.
-ItisnecessarytoprogramSlotXanaloginputand
outputforPTCfunction.
-Loadonthemotorshaftistoohigh.
-Loadcycleistooshort(highnumberofstartsand
stopsperminute).
Highambienttemperaturearoundthemotor.
-Poorcontactorshortcircuit(resistance<100Ω)on
thewiringconnectedtothemotorthermistor.
Motorthermistornotinstalled.
-Motorshaftlocked.
F080:
CPUFault(Watchdog)
Invertercontrolwatchdogfault.-Electricalnoise.
F084:
Self-Diagnostics.Error
Self-DiagnosticsFault.-Defectontheinverterinternalcircuits.
A090:
ExternalAlarm
ExternalalarmviaDI.
Note:
-NecessarytosettheDIinC7.10.1.
-DIinputwiring(setin C7.10.1togenerateexternal
alarm)open.
F091:
ExternalProtection
ExternalfaultviaDI.
Note:
-NecessarytosettheDIinC7.10.2.
-DIinputwiring(setin C7.10.2togenerateexternal
fault)open.
F099:
InvalidCurr.Offset
Currentmeasurementcircuithasavalueoutofthe
standardsforzerocurrent.
-Defectontheinverterinternalcircuits.
F104:
A/DConverterError
FaultreadingtheA/Dconverterthatmeasuresthe
invertercurrentsandvoltages.
-Defectontheinverterinternalcircuits.
-Electromagneticinterferenceabovethelevelthe
inverterwithstands.
A110:
HighMotorTemperature
AlarmrelatedtothePTCtemperaturesensorinstalled
onthemotor.
Note:
-ThealarmcanbedisabledbysettingC7.5.2.
-ItisnecessarytoprogramSlotXanaloginputand
outputforPTCfunction.
-Loadonthemotorshaftistoohigh.
-Loadcycleistooshort(highnumberofstartsand
stopsperminute).
Highambienttemperaturearoundthemotor.
-Poorcontactorshortcircuit(resistance<100Ω)on
thewiringconnectedtothemotorthermistor.
Motorthermistornotinstalled.
-Motorshaftlocked.
A128:
SerialCommunication
Timeout
ItindicatesthattheCFW900stoppedreceiving
telegramsontheserialinterfaceforaperiodlonger
thanthesettingprogrammedinC9.3.5.
Note:
-Makesurethemasteralwayssendstelegramstothe
equipmentwithinaperiodshorterthanthesettingin
C9.3.5..
-ItcanbedisabledbysettingC9.3.5=0.0s.
-Checknetworkinstallation,brokencableor
fault/poorcontactontheconnectionswiththe
network,andgrounding.
A133:
NoPowerSupplyonthe
CANInterface
ItactuateswhentheCANinterfaceispoweredand
lackofpowersupplytotheinterfaceisdetected.
Note:
Measureifthereisvoltagewithintheallowedrange
betweenpins1and5oftheCANinterfaceconnector.
-CANinterfacewithoutpowersupplybetweenpins
1and5oftheconnector.
-Powercablesswitchedorreversed.
-PoorcontactontheCANinterfacecableor
connector.
A134:
BusOff
ThebusofferrorintheCANinterfacehasbeen
detected.
Ifthenumberofreceptionortransmissionerrors
detectedbytheCANinterfaceistoohigh,theCAN
controllercanbetakentothebusoffstate,whereit
interruptsthecommunicationanddisablestheCAN
interface.
Inorderthatthecommunicationbereestablished,it
willbenecessarytocyclethepoweroftheproduct,
orremovethepowersupplyfromtheCANinterface
andapplyitagain,sothatthecommunicationbe
reinitiated.
-Verifyifthereisanyshort-circuitbetweentheCAN
circuittransmissioncables.
-Verify ifthe cableshave notbeen changedor
inverted.
-Verifyifallthenetworkdevicesusethesamebaud
rate.
-Verifyifterminationresistorswiththecorrectvalues
wereinstalledonlyattheextremesofthemainbus.
-VerifyiftheCANnetworkinstallationwascarriedout
inpropermanner.
62|CFW900