GRAPHTEC FC8000-75 - 7.2 Mechanical Adjustments

FC8000-UM-251-9370 7-2
7. ADJUSTMENT
7.2 Mechanical Adjustments
7.2.1 Y-Belt Tension Adjustment
How to adjust the Y-belt tension
Belttensionadjustmentisrequiredtosetpropertensionofthebelttomaintainmachineperformance,reduce
overshoot,andcorrectanyout-of-phaseconditionintheY-axis.
(1) Detachtherightsidecover(seeSubsection6.1.1).
(2) WiththeY-sliderontheY-railandthebeltattached,adjusttheY-tensionpulleyadjustmentscrewsthat
holdtheY-tensionpulleyontotheleftsideplateinordertotightentheY-sliderbelt.Donotover-tighten.
MovetheY-sliderfromlefttorightseveraltimestoverifythatthetensionissetcorrectly.
(3) MovetheY-sliderallthewaytotherightandpullthebelt20mmtowardsthecenterusingaforcegauge.
AdjusttheY-tensionpulleyadjustmentscrewsevenlyuntilthetensionreadsasfollows:
SpecicationoftheBeltTension
Model Forcegaugereadingspecication
FC8000-60 700g+50
FC8000-75 700g+50
FC8000-100 700g+50
FC8000-130 700g+50
FC8000-160 700g+50
20 mm
700 g + 50g
Y idler pulley
Y belt
(4) VerifythattheY-sliderbeltiscenteredanddoesnotmoveupanddownwhentheY-sliderismovedfrom
lefttorightseveraltimes.TheY-sliderbeltshouldnotmoveupanddownmorethan1.5mm.
TheY-sliderbeltshould
notmoveupanddown
morethan1.5mm.
Yidlerpulley
Y-tensionpulley
adjustmentscrews
(5) IftheY-sliderbeltcontinuestomoveupanddownorexhibitslessclearance,re-adjusttheY-tension
pulleyadjustmentscrewsandcheckthebelttensionagain.
(6) Reattachtherightsidecover.