WEG CFW900 - Page 67

English
TROUBLESHOOTINGANDMAINTENANCE
Protection/AlarmDescriptionPossiblecauses
F021:
DCLinkUndervoltage
DClinkundervoltagefault.-Supplyvoltagetoolow,producingvoltageonthe
DClink(S2.7.1)belowtheminimumvalue:
Ud<203V-Supplyvoltage200V.
Ud<210V-Supplyvoltage208-240V.
Ud<385V-Supplyvoltage380V.
Ud<405V-Supplyvoltage400-415V.
Ud<446V-Supplyvoltage440-460V.
Ud<487V-Supplyvoltage480V.
Ud<507V-Supplyvoltage500-525V.
Ud<557V-Supplyvoltage550-600V.
Ud<669V-Supplyvoltage660-690V.
-Phaselossattheinput.
-Faultonthepre-chargecircuit.
-ParameterC1.1.2withavalueabovetheratedline
voltage.
F022:
DCLinkOvervoltage
DClinkovervoltagefault.-Supplyvoltagetoohigh,producingvoltageonthe
DClink(S2.7.1)abovethemaximumvalue:
Ud>400V-Models200-240V.
Ud>800V-Models380-480V.
Ud>1000V-Models500-600V.
Ud>1200V-Models660-690V.
-Drivenloadinertiatoohighordecelerationramptoo
fast.
-C3.5.2.1orC3.5.3.2orC3.6.1settingistoohigh.
F025:
PulseFeedbackError
FailuretocomparethePWMpulsesgeneratedby
thecontrolandtheoutputvoltagesmeasuredbythe
inverter.
Note:
-Resettheinverterandtryagain.
-Motorisdisconnectedormotorissmallinrelation
totheratedcurrentoftheinverterconnectedtothe
output.
-Possibledefectontheinverterinternalcircuits.
-ProblemsinthecircuitoftheSTOsafetyinputs
(XC2).
F030:
IGBTUDesat
FaultofdesaturationontheIGBTsofarmU.-ShortcircuitbetweenthemotorphasesUandVor
UandW.
F034:
IGBTVDesat
FaultofdesaturationontheIGBTsofarmV.-ShortcircuitbetweenthemotorphasesVandUor
VandW.
F038:
IGBTWDesat
FaultofdesaturationontheIGBTsofarmW.-ShortcircuitbetweenthemotorphasesWandUor
WandV.
F042:
BrakeIGBTDesat
FaultofdesaturationonthedynamicbrakingIGBT.-Shortcircuit ontheconnectingcablesofthe
dynamicbraking.
A046:
HighLoadontheMotor
Motoroverloadalarm.
Note:
-ItcanbedisabledbysettingC7.4.1=0or2.
-C7.4.3,C7.4.4andC7.4.5settingislowforthe
motorused.
-Overloadonthemotorshaft.
A047:
HighLoadontheIGBTs
IGBToverloadalarm.-Highcurrentattheinverteroutput:
F048:
OverloadontheIGBTs
IGBToverloadfault.-Currentattheinverteroutputistoohigh.
A050:
IGBT1UOvertemp.
Alarmofhightemperaturemeasuredinthe
temperaturesensors(NTC)oftheIGBTs.
Note:
-ItcanbedisabledbyC7.5.1.
-Highambienttemperaturearoundtheinverter(>50
◦
C)andhighoutputcurrent.
-Lockedordefectivefan.
-Inverterheatsinktoodirty.
60|CFW900