Danfoss TTS350

Table 5-3 Compressor Status 2 Faults
Compressor Status 2 Fault Description
SuctionPressureSensorFault
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Sensorerrorsoccurwhenthesensorisprovidingareadingthatisoutsidethenormalreadablerange
andindicatesanerrorinthereading,orafunctionalproblemwiththesensor.-onlyavailablein4.X
SuctionTemperatureSensor
Fault
DischargePressureSensorFault
DischargeTemperatureSensor
Fault
InverterTemperatureSensor
Fault
CavityTemperatureSensorFault
SoftStartTemperatureSensor
Fault
InvalidBearingCalibrationFault AvalidbearingcalibrationisnotstoredintheEEPROM.
InverterCoolingControlFault ThemeasuredInverterTemperaturehasexceededtheCoolingControlFaultlimitaftertheFaultDelaytimerhas
expired.Ifthetemperaturerisesabovethefaultlimit,thefaultdelaytimerwillbegin,ifthetemperaturefalls
belowthefaultlimit,thetimerwillbereset,thecompressorwillstopifthetimerexpires.
MotorCoolingControlFault ThemeasuredCavityTemperaturehasexceededtheCoolingControlFaultlimitaftertheFaultDelaytimerhas
expired.Ifthetemperaturerisesabovethefaultlimit,thefaultdelaytimerwillbegin,ifthetemperaturefalls
belowthefaultlimit,thetimerwillbereset,thecompressorwillstopifthetimerexpires.
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Table 5-4 Motor Fault Types
Motor/System Status Description
MotorSinglePhaseOvercurrent
Fault
Measuredpeakcurrentvalueofanysinglephasetomotor(fromInverter)exceedsthefaultlimit.
DCBusOvervoltageFault ThemeasuredDCbusvoltagehasexceededtheMaximumDCBusVoltagelimit,whileRPMis>0
MotorHighCurrentFault ThemotorcurrenthasexceededMaximumMotorCurrentlimit.
InverterError Inverterreportsagenericerror,orcommunicationtoBMCCislost.
BearingFaultActive IfaBearingStatusFaulttypeispresent,thentheBearingFaultActiveistriggered.Thisisnotanactualfault,only
anindicationthatafaulthasoccurredintheBearingStatussection.
RotorStartingTorqueFault MotorCurrentmaximumhasbeenexceededduringcompressorstart-up.
LowInverterCurrentFault Measuredcurrenttomotor(fromInverter)hasnotreachedtheMinimumPowerlimit.
DCBusUnder/OverVoltage
Fault
At0RPM:ThemeasuredDCBusvoltageismeasuredlowerorhigherthantheDCBusUnderorOverVoltageFault
limits.
24VDCUnder/OverVoltage
Fault
Themeasured24VDCsupplyisoutsidetherangeoftheloworhighlimit.
LowMotorBackEMFFault ThecalculatedmotorbackEMFhasfallenbelowtheminimumBackEMFlimit.
EEPROMChecksumFault Anerror(checksumerror)occursreadingthedatatablefromtheEEPROM.
GeneratorModeActive Atgreaterthan0RPMandDCbusvoltagelow,Generatormodeisenabled,switchingtheInvertertorectifier
functiontomaintaintheDCbusvoltageuntiltheshaftcomestoastopanddelevitates.
SCRRippleVoltageFault TheDCbusvoltagerippleexceedstheSCRVoltageRippleFaultlimit.
SysteminStartupmode Thecompressorinitializationhasnotfinished.Pleasewait.Compressorisresettingafterapowercycle.Thisisa
statusmessage.
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