WEG CFW900 - 2.3 ABOUT THE CFW900

English
GENERALINFORMATION
diodes.
rms:Rootmeansquare,effectivevalue.
rpm:revolutionsperminute.
s:second.
STO:SafeTorqueOff.WhentheSTOfunctionisenabled,theinverterensuresthatitwillnotgeneratetorqueon
themotorshaft.
SS1-t:SafetyStop1.WhentheSS1-tfunctionisenabled,theinverterstartsdeceleratingthemotorandenables
theSTOfunctionafteraspecifiedtime.
TBD:valuetobedefined.
USB:UniversalSerialBus;isaserialbusstandardthatallowsdevicestobeconnectedusingthe”PlugandPlay”
concept.
V:volts.
Varistor:metaloxidevaristor.
Ω:ohms.
µ:micro(10
−6
)
2.3ABOUTTHECFW900
TheCFW900frequencyinverterisahigh-performanceproductthatallowsspeedandtorquecontroloflow-voltage
three-phasemotors.Themainfeaturesofthisproductaretheon-boardtechnology,whichallowstheflexible
solutionofdifferenttypesofapplication,anditsconnectivity.Tothisend,ithasthefollowingfunctionalities:
Vectorcontrol(SensorlessandEncoder)forinductionmotors,scalarcontrol(V/ForVVW)forinductionmotors
andVVWscalarcontrolforpermanentmagnet(PM)motors.
Built-inEthernetandRS485communicationinterfaces.Othercommunicationinterfacesavailableviaaccessories.
AdvancedEnergySavingFunctionthatreducesmotorlossesandimprovesthesystemperformance.
ThermalManagementFunctionthatactsontheinvertertoprotecttheequipmentintegrityandfunctionality.
SpecificPWMModulationfunctionforusewithLongCablesattheinverteroutputtothemotor.
DCBrakingfunctiontooptimizetheinverterstop.Itcanalsobeusedasamotorwarm-upfunctioninspecific
cases.
DynamicBrakingfunctionandvectorcontrolOptimalBraking.OptimalBrakingenablesthecontrolledbrakingof
themotor,eliminatingthebrakingresistorinsomeapplications.
FlyingStartfunctionthatallowsdrivingamotoronthefly,acceleratingitfromthespeedatwhichitisrunning.
Ride-Throughfunctionthatallowsrecoveringtheinverter,withoutundervoltagelocking,whenapowerfailure
occursforabrieftime.
Orientedstart-up(Assistant)functiongroupsandallowsthedefinitionofthemainparametersfortheinverter
operation.
Self-Tuningfunction(Assistant)forthevectorcontrolallowstheautomaticsettingoftheregulatorsandcontrol
parameters,fromtheidentification(alsoautomatic)ofthemotorandloadparameters.
BynavigatingtheCFW900HMI,itispossibletosettheparametersthroughthenavigationgroups:Status,
DiagnosticsandConfigurations.Fromthesethreegroups,youcanaccesstheproductidentification,
measurements(voltages,currents,temperaturesetc.),protectionandalarmdiagnostics(active
protection/present, timecontroletc.)andinverterconfigurations(powersupply, motordata,controlused,
commandsandreferencesetc.).
CFW900|5