WEG CFW900 - Page 70

English
TROUBLESHOOTINGANDMAINTENANCE
Protection/AlarmDescriptionPossiblecauses
A135:
CANopenOff-line
ItoccursifthestateoftheCANopennodechanges
fromoperationaltopre-operational.
Note:
-Checktheoperationoftheerrorcontrol
mechanisms(Heartbeat/NodeGuarding).
-Themasterisnotsendingtheguarding/heartbeat
telegramsattheprogrammedtime.
-Communicationproblemscausedbylosttelegrams
ortransmissiondelays.
A136:
MasterinIdle
ItactuateswhencommunicatingwiththeDeviceNet
networkmasterinRunmode,andtransitiontoIdle
modeisdetected.
-Settheswitchthatcontrolsthemasteroperation
ofthemastertoRunorthecorrespondingbitonthe
configurationwordofthemastersoftware.Forfurther
explanations,seethedocumentationofthemasterin
use.
A137:
DeviceNetconnection
timeout
ItindicatesthatoneormoreDeviceNetI/O
connectionshasexpired.
Itoccurswhen,forsomereason,afterthecyclical
communicationbetweenthemasterandtheproduct
hasstarted,thiscommunicationisinterrupted.
-Checkthestatusofthenetworkmaster.
-Checknetworkinstallation,brokencableor
fault/poorcontactontheconnectionswiththe
network.
A145:
SNTPConnection
Timeout
Itindicatesthattheinvertertriedtoconnecttothe
NTPserverandgotnoresponse.
Itoccurswhen,for somereason,after starting
connectionwiththeNTPserver,theserverdidnot
returntheresponserequestedbytheinverter.
CheckconfigurationandIPaddress.
CheckiftheNTPserverisstillactive.
A149:
TimeoutModbusTCP
Itindicatesthatthedevicestoppedreceivingvalid
telegramsfor aperiodlongerthanthe settingin
C9.6.3.
Thetimecountingstartsassoonasitreceivesthe
firstvalidtelegram.
-Checknetworkinstallation,brokencableor
fault/poorcontactontheconnectionswiththe
network,grounding.
-EnsuretheModbusTCPclientalwayssends
telegramstotheequipmentinatimeshorterthanthe
settinginC9.6.3.
-DisablethisfunctioninC9.6.3.
F150:
MotorOverspeed
Overspeedfault.
Note:
-Activatedwhentheactualspeedexceedsthevalue
of C4.3.1.1.2x(100%+ C7.7.1)formorethan20
ms.
-IncorrectsettingofC3.3.2.1.2and/orC3.3.2.1.3.
-Crane-typeloadtrips.
A152:
Pow.Int.AirOvertemp.
Highinternalairtemperaturealarm.
Note:
-ThealarmcanbedisabledbysettingC7.5.1.
-Highambienttemperaturearoundtheinverter(>50
◦
C)andhighoutputcurrent.
-Defectiveinternalfan(whenapplicable).
F153:
Pow.Int.AirOvertemp.
Internalairovertemperaturefault.-Highambienttemperaturearoundtheinverter(>50
◦
C)andhighoutputcurrent.
-Defectiveinternalfan(whenapplicable).
A154:
Cont.Int.AirOvertemp.
Controlcircuithightemperaturealarm.
Note:
-ThealarmcanbedisabledbysettingC7.5.1.
-Highambienttemperaturearoundtheinverter(>50
◦
C)andhighoutputcurrent.
-Lockedordefectivefan.
-Inverterheatsinktoodirty.
F155:
Cont.Int.AirOvertemp.
Controlcircuitovertemperaturefault.-Highambienttemperaturearoundtheinverter(>50
◦
C)andhighoutputcurrent.
-Lockedordefectivefan.
-Inverterheatsinktoodirty.
A156:
IGBTundertemperature
Alarmofundertemperaturemeasuredbythesensors
intheIGBTs,rectifier,powerand/orcontrolbelow-30
◦
C.
Note:
-ThealarmcanbedisabledbysettingC7.5.1.
-Ambienttemperaturearoundtheinverter≤ -30
◦
C.
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