Beijer-electronics BFI-P2 V1.21 Instrukcja Użytkownika Pobierz pdf (Strona 42)

UserGuideRevision1.12

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8.3. ParameterGroup4–HighPerformanceMotorControl

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Incorrectadjustmentofparametersinmenugroup4cancauseunexpectedbehaviourofthemotorandanyconnected

machinery.Itisrecommendedthattheseparametersareonlyadjustedbyexperiencedusers.

Par ParameterName Minimum Maximum Default Units

P4‐01 MotorControlMode 0 2 2 ‐

Selectsthemotorcontrolmethod.Anautotunemustbeperformedifsetting0or1isused.

0:SpeedControlwithTorqueLimit(vector)

1:TorqueControlwithSpeedLimit(vector)

2:SpeedControl(EnhancedV/F)

P4‐02 MotorParameterAuto‐tuneEnable 0 1 0 ‐

Whensetto1,thedriveimmediatelycarriesoutanon‐rotatingautotunetomeasurethemotorparametersforoptimumcontroland

efficiency.Followingcompletionoftheautotune,theparameterautomaticallyreturnsto0.

P4‐03 VectorSpeedControllerProportionalGain 0.1 400.0 25.0 %

SetstheproportionalgainvalueforthespeedcontrollerwhenoperatinginVectorSpeedorVectorTorquemotorcontrolmodes(P4‐

01=0or1).Highervaluesprovidebetteroutputfrequencyregulationandresponse.Toohighavaluecancauseinstabilityoreven

overcurrenttrips.Forapplicationsrequiringbestpossibleperformance,thevalueshouldbeadjustedtosuittheconnectedloadby

graduallyincreasingthevalueandmonitoringtheactualoutputspeedoftheloaduntiltherequireddynamicbehaviourisachieved

withlittleornoovershootwheretheoutputspeedexceedsthesetpoint.

Ingeneral,higherfrictionloadscantoleratehighervaluesofproportionalgain,andhighinertia,lowfrictionloadsmayrequirethe

gaintobereduced.

P4‐04 VectorSpeedControllerIntegralTimeConstant 0.000 1.000 0.050 s

Setstheintegraltimeforthespeedcontroller.Smallervaluesprovideafasterresponseinreactiontomotorloadchanges,attherisk

ofintroducinginstability.Forbestdynamicperformance,thevalueshouldbeadjustedtosuittheconnectedload.

P4‐05 MotorPowerFactorCosØ 0.50 0.99 ‐ ‐

WhenoperatinginVectorSpeedorVectorTorquemotorcontrolmodes,thisparametermustbesettothemotornameplatepower

factor

P4‐06 TorqueControlReference/LimitSource 0 5 0 ‐

WhenP4‐01=0,thisparameterdefinesthesourceforthemaximumoutputtorquelimit.

WhenP4‐01=1,thisparameterdefinesthesourceforthetorquereference(setpoint).

0:FixedDigital.Thetorquecontrollerreference/limitissetinP4‐07

1:AnalogInput1.The

outputtorqueiscontrolledbasedonthesignalappliedtoAnalogInput1,whereby100%inputsignallevelwill

resultinthedriveoutputtorquebeinglimitedbythevaluesetinP4‐07.

2:AnalogInput2.TheoutputtorqueiscontrolledbasedonthesignalappliedtoAnalogInput2,whereby100%inputsignallevelwill

resultinthedriveoutputtorquebeinglimitedbythevaluesetinP4‐07.

3:Fieldbus.TheoutputtorqueiscontrolledbasedonthesignalfromthecommunicationsFieldbus,whereby100%inputsignallevel

willresultinthedriveoutputtorquebeinglimitedbythevaluesetinP4‐07. 

4:Master/Slave.TheoutputtorqueiscontrolledbasedonthesignalfromtheMasterinverter,whereby100%inputsignallevelwill

resultinthedriveoutputtorquebeinglimitedbythevaluesetinP4‐07.

5:PIDControllerOutput.TheoutputtorqueiscontrolledbasedontheoutputofthePIDcontroller,whereby100%inputsignallevel

willresultinthedriveoutputtorquebeinglimitedbythevaluesetinP4‐07.

P4‐07 MaximumMotoringTorqueLimit/CurrentLimit P4‐08 500.0 200.0 %

WhenoperatinginVectorSpeedorVectorTorquemotorcontrolmodes(P4‐01=0or1),thisparameterdefinesthemaximum

torquelimitorreferenceusedbythedriveinconjunctionwithP4‐06.

WhenoperatinginV/FMode(P4‐01=2),thisparameterdefinesthemaximumoutputcurrent

thedrivewillprovidetothemotor

beforereducingtheoutputfrequencytoattempttolimitthecurrent.

P4‐08 MinimumMotoringTorqueLimit 0.0 P4‐07 0.0 %

ActiveonlyinVectorSpeedorVectorTorquemotorcontrolmodes(P4‐01=0or1).Setsaminimumtorquelimit,wherebythewhen

theDriveisenabled,itwillalwaysattempttomaintainthistorqueonthemotoratalltimeswhilstoperating.

NOTE:Thisparametershouldbeusedwithextremecare,asthedriveoutputfrequencywillincreasetoachievethetorquelevel,

andmayexceedtheselectedspeedreference

P4‐09 GeneratorModeMax.TorqueLimit(MaximumRegenerativeTorque) 0.0 200.0 200.0 %

ActiveonlyinVectorSpeedorVectorTorquemotorcontrolmodes(P4‐01=0or1).Setsthemaximumregeneratingtorqueallowed

bytheDrive

P4‐10 V/FCharacteristicAdjustmentFrequency 0.0 P1‐09 0.0 Hz

WhenoperatinginV/Fmode(P4‐01=2),thisparameterinconjunctionwithP4‐11setsafrequencypointatwhichthevoltagesetin

P4‐11isappliedtothemotor.Caremustbetakentoavoidoverheatinganddamagingthemotorwhenusingthisfeature.

P4‐11 V/FCharacteristicAdjustmentVoltage 0 P1‐07 0 V

UsedinconjunctionwithparameterP4‐10

P4‐12 ThermalOverloadValueRetention 0 1 0 ‐

0:Disabled.

1:Enabled.AllBFIfeatureelectronicthermaloverloadprotectionfortheconnectedmotor,designedtoprotectthemotoragainst

damage.Aninternaloverloadaccumulatormonitorsthemotoroutputcurrentovertime,andwilltripthedriveiftheusage

exceedsthethermallimit.WhenP4‐12isdisabled,removingthepowersupplyfromthedriveandre‐applyingwillresetthevalue

oftheaccumulator.WhenP4‐12isenabled,thevalueisretainedduringpoweroff.

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