Ifyouexperiencedifcultieswithyourinstallation,dothe
followingtodeterminetheproblem.
Checking the Readout
Difcultiesonmorethanoneaxisareusuallyassociatedwiththe
readout.Followthesestepstodetermineifyourdifcultiesare
associatedwiththereadout:
•Insurethatthelinearencoderconnectorsarecorrectlyseated.
•Swaplinearencodercablesatthereadouttoseeiftheproblem
isstillshowninthesamedisplay.
•Iftheproblemremainsinthesamedisplay,thereadoutisin
error.
•Iftheproblemfollowstheconnectionchange,thelinear
encoder may be in error.
IftheReadoutisatfault,referto“Whattodo”toarrangeforthe
parts necessary to repair your system. If a linear encoder appears
tobeatfault,proceedwith“CheckingtheLinearEncoders”.
Checking the Linear Encoders
Problemsonasingleaxisareusuallyassociatedwiththelinear
encoder or its installation. Difficulties can be caused by improper
installation,looseormisalignedbracketry,oradamagedor
inoperable encoder.
Followthesestepstodeterminethecauseofyoursystem
difficulties:
•Conrmthatyourbracketryandinstallationdoesnotinterfere
withothermachinestructuresthroughtheentirelengthofthe
linearencodertravel.
•Checkforloosefasteners.Ifyoundloosefasteners,rst
confirm that the linear encoder is installed to the tolerances
specified and then retighten the fasteners as required.
•Conrmthatthelinearencoderisinst alledtotherequired
tolerances by checking the alignment tolerances specified
onPage4.Iftheinstallationdoesnotmeetthetolerances,
reinstalltheencoderaccordingtothe“InstallationProcedure”.
•PerformaRepeatabilityTestasdescribedonPage13.Ifthe
linearencoderisinstalledtotherequiredtolerances,the
bracketryandencoderhavebeencheckedforinterferencesand
loosefasteners,andtheencoderfailstherepeatabilitytest,the
encoder is likely at fault.
Do not attempt to repair the reading head or scale assembly. The
SENC150iseldserviceablebyassemblyreplacementonly.
Attemptstorepairtheencodercanpermanentlydamageitand
voidthewarranty.
What to do
If an ACU-RITE
®linearencoderorreadoutisfoundtobeatfault,
pleasecontactyourAuthorizedDistributorforinstructionspriorto
removingtheencodersorreadout.
Trouble Shooting SENC 150
16
ACU-RITE
®
516291-21_Ve00_SENC_150.indd 18 10/22/2009 10:00:47 AM