WEG CFW900 - Page 11

English
GENERALINFORMATION
Heatsink:metaldevicedesignedtodissipatetheheatgeneratedbythepowersemiconductors.
RFIfilter:RadioFrequencyInterferenceFilter,isafilterusedtoreduceinterferenceintheradiofrequencyrange.
Switchingfrequency:frequencyoftheIGBTsswitchingintheinverterbridge.
ft:foot.Isaunitofmeasureoflength.
Gatedriver:circuitusedtoturntheIGBTsonandoffinacontrolledandsafeway.
Start/Stop:functionoftheinverterthat,whenenabled(Run),acceleratesthemotorbyaccelerationrampupto
thereferencespeedand,whendisabled(Stop),deceleratesthemotorbydecelerationrampuntilfullstop,when
thePWMpulsesarethenlocked.
GeneralEnable:whenactivated,thisfunctionacceleratesthemotorviaaccelerationrampsetintheinverter.
Whendeactivated,thisfunctionimmediatelyblocksthePWMpulses. Itcanbecontrolledbydigitalinputorvia
serialcommunication.
HMI:HumanMachineInterface;devicethatallowscontrollingtheinverterparameters.
hp:
HorsePower,correspondsto746watts.
Hz:hertz.
I
nom-HD
:inverterratedcurrentforusewiththeheavyduty.Overload:
1.5 · I
nom−HD
1min
I
nom-ND
:inverterratedcurrentforusewiththenormalduty.Overload:
1.1 · I
nom−ND
1min
BrakingIGBT:worksasaswitchtoactivatethebrakingresistors;itiscontrolledbytheDCLinkvoltagelevel.
IGBT:InsulatedGateBipolarTransistor,basiccomponentoftheoutputinverterbridge.
in:inch.
k:kilo(10
3
)
kg:kilogram=1000grams.
l:liters.
lb:pound.
m:Ifisolated,indicatesmeter;togetherwithanotherunitofmeasurement,indicatesmilli(10
−3
)
Frame:designationrelatedtothedimensionoftheproductforacertainpowerrange.
FLASHmemory:non-volatilememorythatcanbeelectronicallywrittenanderased.
min:minute.
N.m:newtonmeter;unitoftorque.
NTC:NegativeTemperatureCoefficient;acomponentthatreducesitselectricalresistancewhenthetemperature
increases.
PE:ProtectiveEarth.
PTC:PositiveTemperatureCoefficient;acomponentthatincreasesitselectricalresistancewhenthetemperature
increases.
PWM:PulseWidthModulation.
NormalDuty(ND):referstotheinverterdutycyclewithmaximumvaluesofcurrentincontinuousoperationequal
toI
nom-ND
andoverloadof110%for1minute.ItcanbeconfiguredinC3.9.3andmustbeusedtodrivemotors
that,intheapplication,arenotsubjecttohighoverloadtorquesinrelationtotheirratedtorquewhenoperatingat
constantspeed,starting,acceleratingordecelerating.
HeavyDuty(HD):referstotheinverterdutycyclewithmaximumvaluesofcurrentincontinuousoperationequalto
I
nom-HD
andoverloadof150%for1minute.ItcanbeconfiguredinC3.9.3andmustbeusedtodrivemotorsthat,
intheapplication,aresubjecttohighoverloadtorquesinrelationtotheirratedtorquewhenoperatingatconstant
speed,starting,acceleratingordecelerating.
Rectifier:inverterinputcircuitthattransformstheinputACvoltageintoDC,formedbythyristorsand/orpower
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