Danfoss TTS400 User Manual

Compressor Status
Description
Trigger Method Troubleshooting
l
Ensuretheliquidmotor-coolinglinehassufficientliquidsupplyandisnotblocked.
l
Preventprolongedoperationatapressureratiolessthan1.5.
l
Verifythesolenoidsareoperationalandnotblocked.RefertoSection4.6.3Solenoid
Verificationonpage73.
l
Verifythesolenoidactuators.RefertoSection4.6.3SolenoidVerificationonpage73.
l
VerifytheSerialDriver.RefertoSection4.26.3SerialDriverVerificationonpage217.
l
VerifySCRtemperaturesensor.RefertoSection4.18.2.5SCRTemperatureSensor
Verificationonpage144.
l
VerifySCRs.RefertoSection4.18.2SCRVerificationonpage142.
(AlarmandFaultremovedfromCC4.2.Xandlatersoftware)
LockOutFault INS InstantaneousLockOutFault:
l
DischargePressurePre-CC4.0.0
l
3-PhaseOvercurrentPre-CC4.0.0
l
InverterErrorCC4.X.X
Ifany(oracombinationof)thefaultslistedbelowoccursmorethanthree(3)timeswithin30minutes,
aLock-Outfaultwilloccur:
l
DischargePressureCC4.X.X
l
InverterTemperature
l
SCRTemperature
l
3-PhaseOvercurrentCC4.X.X
l
MotorHighCurrent
l
InverterErrorPre-CC4.0.0
l
RotorStartingTorque
l
LowMotorBackEMF
l
Reviewfaultlogforindicationoffaultsrecordedattimeoflockoutfault.Determine
causeofthefaultsandrepairasnecessary.
l
CyclepowertoclearLock-OutFault.Activealarm/FaultViewerinSMTallowstheLock
Outcountertobemonitored.
HighWinding
TemperatureFault
AFT
l
IndicatestheRawMotorThermalReadoutintheCompressorMonitorToolhasexceeded
themaximumlimit.
l
Ensuretheliquidmotor-coolinglinehassufficientliquidsupplyandisnotblocked.
l
Preventprolongedoperationatapressureratiolessthan1.5.
l
Verifythesolenoidsareoperationalandnotblocked.RefertoSection4.6Solenoidsand
Coilsonpage72.
l
Verifythesolenoidactuators.RefertoSection4.6.3SolenoidVerificationonpage73.
l
VerifytheSerialDriver.RefertoSection4.26.3SerialDriverVerificationonpage217.
l
Verifythemotorthermistor.RefertoSection4.23.4.3StatorThermistorResistance
Verificationonpage195.
HighSuction
SuperheatFault
AFT
l
SuctionSuperheatiscalculatedfromthecompressorsuctionpressureandtemperature
values.
l
Suggestshighevaporatortemperaturecombinedwithlowevaporatorpressure,
insufficientrefrigerantcharge,checkvalvehasfailedtoopenorthecompressorhas
beenrunninginsurgeconditionforanextendedperiodoftime.
l
Checkthecharge,systemloadandenteringair/waterconditions.
l
Verifycheckvalveopensduringcompressoroperation.
Page 258 of 294 - M-SV-001-EN Rev. H 1/23/2023

Danfoss TTS400 Specifications

General

Brand	Danfoss
Model	TTS400
Category	Air Compressor
Language	English