Beckhoff AL2000 Linear servomotor Manual de usuario descargar pdf (Pagina 43)

Electricalinstallation

T(ºC) 0 10 20 30 40 50 60 70 80 90 100 110 120 130

RKTY(Ω) 815 886 961 1040 1123 1209 1300 1394 1492 1594 1700 1810 1923 2041

Thesensorrequiresacontinuouscurrentofbetween0and2mA.Theresistancedoesnotrespondlinearly

totemperature.Alinearcurrent/temperaturecurvecanbeobtainedwitharesistancecircuitasshowninthe

diagrambelow.Thebasictoleranceisaround±5ºC(withshuntresistors).

8.4 Polaritytest

Attention

Protectionofthelinearservomotor

Beforethetest,makesurethatthelinearmotorsystemhassuitableelectricalandmechan

icalprotection.

Thereisonewayofcheckingthepolarity.Bymeansofmovingthecarriageitispossibletodetermine

whetherthedirectionofmovementofthemotorcorrespondstothecountdirectionofthefeedback.Ifthisis

thecase,themotorisconnectedcorrectly.Otherwise,twophasesinthemotorcablephases1and3

mustbeswapped.

AlllinearservomotorsfromBeckhoffarewiredandconnectedinexactlythesameway,sothatasingletest

issufficientinordertodeterminethepolarityofamotor/graduatedrulecombination.Ifmorethanoneaxisis

beingconstructedinasimilarway,thepolaritywillbeidentical.

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Beckhoff AL2000 Linear servomotor Manual de usuario Pagina 43