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—————— TPD32-EV ——————

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PID error ErrorreadingintheinputofthefunctionPID(PID clamp blockoutput).

PID feed-back Readingoffeed-backvaluefromthetransducerposition(dancer)ortension(loadcell).

PID offs. sel OffsetselectoraddedtoPID feed-back.Thisparametercanbesetonadigitalprogram-

mableinput.

 0=PID offset 0 1=PID offset 1

PID offset 0 Offset0addedtoPID feed-back.Thisparametercanbesetonanaloginput,E.g.for

thetensionsettingwhenaloadcellhastobeusedasfeed-back.

PID offset 1 Offset1addedtoPID feed-back.

PID acc time AccelerationramptimevalueinsecondsafterthePIDoffset block.

PID dec time DecelerationramptimevalueinsecondsafterthePIDoffset block.

PID clamp Theclampallowsasmoothtensionsettingofacontrolledsystemwinder/unwinder,

whenthe“calculationoftheinitialdiameter”functioncannotbeused.

 Whenthedriveisenabled,thedancerisatitslowerfullscale,withPID error atits

maximumvalue.Themotorcouldacceleratetofastintakingthedancerinitscentral

positionofwork.

 SettingPID clamp atavaluesufcientlylowe.g=1000,atthedriveenablingandat

theenablingofEnable PD PID,thevalueofPID error islimitedto1000untilthe

signalcomingfromthedancer(PID feed-back)doesnotreachthisvalue.NowPID

clamp isautomaticallytakebackatitsmaximumvaluecorrespondingto10000.The

clampiskeptat10000tillthenextdisablingofthedriveorofEnable PD PID.

Thefeed-backinputisprovidedfortheanalogtransducersconnectionlikedancer,withrelativepotentiometer

orloadcell.Nevertheless,itispossibletousethisinputblockascomparisonpointbetweentwodifferentanalog

signals+/-10V.

Connection to a dancer with potentiometer connected between - 10 and + 10V.

Thewiperofthepotentiometercanbeconnectedtooneoftheanaloginputsofthedrive.Normallyitshould

beusedtheanaloginput1(terminals1and2)becauseitisprovidedwithlter.

TheinputchoosenforthatconnectionmustbeprogrammedinthemenuI/OCONFIGasPID feed - back.Its

valuecanbereadinthePID feed - back parameterinthePID REFERENCE submenu.

ThroughPID offset 1 (orPIDoffset0),itispossibletocarryontheadjustementofthedancerposition.

Connection to a load cell with full range + 10V.

Theoutputoftheloadcellcanbeconnectedtooneofthedriveanaloginputs.Normallytheanaloginput1

(terminals1and2)shouldbeusedbecauseofthelterprovided.

TheinputchoosenfortheconnectionmustbeprogrammedinthemenuI/OCONFIGasPID feed - back.Its

valuecanbereadinthePID feed - back parameterofthePID REFERENCE submenu.

Thetensionsettingcanbesent,withvalue0...-10V,tooneoftheremainingprogrammableanaloginputsinthe

I/O CONFIG menuasPID offset 0.

gefran TPD32-EV-...-4B User Manual

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