Beijer-electronics BFI-P2 V1.21 Bedienungsanleitung PDF herunterladen (Seite 41)

UserGuideRevision1.121

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8.2. ParameterGroup3–PIDControl

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

P3‐01 PIDProportionalGain 0.1 30.0 1.0 ‐

PIDControllerProportionalGain.Highervaluesprovideagreaterchangeinthedriveoutputfrequencyinresponsetosmallchanges

inthefeedbacksignal.Toohighavaluecancauseinstability

P3‐02 PIDIntegralTimeConstant 0.0 30.0 1.0 s

PIDControllerIntegralTime.Largervaluesprovideamoredampedresponseforsystemswheretheoverallprocessrespondsslowly

P3‐03 PIDDifferentialTimeConstant 0.00 1.00 0.00 s

PIDDifferentialTimeConstant

P3‐04 PIDOperatingMode 0 1 0 ‐

0:DirectOperation.Usethismodeifanincreaseinthemotorspeedshouldresultinanincreaseinthefeedbacksignal

1:InverseOperation.Usethismodeifanincreaseinthemotorspeedshouldresultinadecreaseinthefeedbacksignal

P3‐05 PIDReference(Setpoint)SourceSelect 0 2 0 ‐

SelectsthesourceforthePIDReference/Setpoint

0:DigitalPresetSetpoint.P3‐06isused

1:AnalogInput1Setpoint

2:AnalogInput2Setpoint

P3‐06 PIDDigitalReference(Setpoint) 0.0 100.0 0.0 %

WhenP3‐05=0,thisparametersetsthepresetdigitalreference(setpoint)usedforthePIDController

P3‐07 PIDControllerOutputUpperLimit P3‐08 100.0 100.0 %

LimitsthemaximumvalueoutputfromthePIDcontroller

P3‐08 PIDControllerOutputLowerLimit 0.0 P3‐07 0.0 %

LimitstheminimumoutputfromthePIDcontroller

P3‐09 PIDOutputLimitControl 0 3 0 ‐

0:DigitalOutputLimits.TheoutputrangeofthePIDcontrollerislimitedbythevaluesofP3‐07&P3‐08

1:AnalogInput1ProvidesaVariableUpperLimit.TheoutputrangeofthePIDcontrollerislimitedbythevaluesofP3‐08&the

signalappliedtoAnalogInput1

2:AnalogInput1ProvidesaVariableLowerLimit.TheoutputrangeofthePIDcontrollerislimitedbythesignalappliedtoAnalog

Input1&thevalueofP3‐07

3:PIDoutputAddedtoAnalogInput1Value.TheoutputvaluefromthePIDControllerisaddedtothespeedreferenceappliedto

theAnalogInput1

P3‐10 PIDFeedbackSignalSourceSelect 0 1 0 ‐

0:AnalogInput2

1:AnalogInput1

2:OutputCurrent

3:DCBusVoltage

4:Differential:AnalogInput1–AnalogInput2

5:LargestValue:AnalogInput1orAnalogInput2

P3‐11 MaximumPIDErrortoEnableRamps 0.0 25.0 0.0 %

DefinesathresholdPIDerrorlevel,wherebyifthe differencebetweenthesetpointandfeedbackvaluesislessthanthesetthreshold,

theinternalramptimesofthedrivearedisabled.WhereagreaterPIDerrorexists,theramptimesareenabledtolimittherateof

changeofmotorspeedonlargePIDerrors,andreactquicklytosmallerrors.

Settingto0.0meansthatthedriverampsarealwaysenabled.Thisparameterisintendedtoallowtheusertodisablethedrive

internalrampswhereafastreactiontothePIDcontrolisrequired,howeverbyonlydisablingthe

rampswhenasmallPIDerrorexists,

theriskofpossibleovercurrentorovervoltagetripsbeinggeneratedarereduced.

P3‐12 PIDFeedbackValueDisplayScalingFactor 0.000 50.000 0.000 ‐

AppliesascalingfactortothedisplayedPIDfeedback,allowingtheusertodisplaytheactualsignallevelfromatransducer,e.g.0–10

Baretc.

P3‐13 PIDFeedbackWakeUpLevel 0.0 100.0 0.0 %

SetsaprogrammablelevelwherebyifthedriveentersstandbymotorwhilstoperatingunderPIDcontrol,theselectedfeedbacksignal

mustfallbelowthisthresholdbeforethedrivewillreturntonormaloperation.

P3‐18 PIDOperationControl ‐ ‐ ‐ ‐

0:ContinuousPIDOperation.Inthisoperatingmode,thePIDcontrolleroperatescontinuously,regardlessofwhetherthedriveis

enabledordisabled.ThiscanresultintheoutputofthePIDcontrollerreachingthemaximumlevelpriortothedriveenablesignal

beingapplied.

1:PIDoperationonDriveEnable.Inthisoperatingmode,thePIDcontrolleronlyoperateswhenthedriveisenabled,andhencewill

alwaysstartfromzerowhenthedriveisenabled.

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