View
3
Download
0
Category
Preview:
Citation preview
Data sheetH-5439-8200-01-A
OMI-2T optical machine interface
www.renishaw.com/omi-2t
The OMI-2T is a combined optical transmitter/receiver and machine interface, designed for mounting within the machine’s working envelope. The OMI-2T operates using a ‘Modulated’ optical transmission mode and is compatible with machine
probes that also operate in ‘Modulated’ mode.
Features
• Twin probe system
TheOMI-2Tiscapableofoperatingtwocompatibleprobes
sequentially.
• Modulated transmission
Effectsoflightinterferencearereducedwhichinsome
circumstancescouldcausefalsetriggersignals.
• Visible probe diagnostic LEDs
LEDsprovideavisualindicationofsystemstatus
andidentifiestheactiveprobe.
• Mounting bracket
Theoptionalmountingbracketallowsdirectionalsetting.
• Toughened glass window
• Fully sealed to IPX8
• User configurable outputs
Probestatus1SSR NO/NC,pulsed/level.
Probestatus2SSR NO/NC.pulsed/level.
ErrorSSR NO/NC.
LowbatterySSR NO/NC.
• Range selection
Start(Tx) 50%or100%.
Reception(Rx)50%or100%.
Bothfactorysetat100%.
• Start inputs
Levelmachineinputsdefinetheactiveprobe.Whenthe
respectiveinputisactive,theprobeisswitchedon.
Ifbothinputsareactivethesystemwilldefaulttoerror.
Operating features
Switch on/off method
TheOMI-2Toperatesusingonlyopticalon/opticaloffasthe
switchon/offmethod.
Opticalon/opticaloffisavailablewithallRenishaw’sOMP
rangeofspindleprobesandtheOTStoolsetterprobe.
Timeout,spinon/offandshankon/offoptionsarenot
compatiblewiththeOMI-2T.
Start up times
Innormaloperationthestartuptimeofeitherprobe(as
reportedbytheOMI-2Terrorsignal)is410msmaximum.
Theturnofftimeis0seconds.
Normaloperationreferstowhentheon/offstatusofthe
probesisinsynchronisationwiththereceiveron/offstatus.
Theactiveprobeshouldcorrespondtotherespectiveactive
systemLED.
WhenchangingfromProbe1toProbe2,orProbe2to
Probe1,allow1secondbetweenthecancellingofone
machinestartinputandraisingoftheotherstartinput.
Synchronisation recovery
Underabnormaloperatingsituationsthesystemmaylose
synchronisationbetweenthereceiverandprobes.Aninternal
synchronisationrecoverywillbeinitiatedwhenthenext
machineinputisactivated.
continuedonnextpage:
Data sheetOMI-2Topticalmachineinterface
1 2 3 4
5
6 6
The OMI-2T is compatible with machine probes operating in ‘Modulated’ mode
Inspection probeOMP40-2/OMP60/OMP400
(OMP40-2shown)
Workpiece
OMI-2T opticaltransmitter/receiver
andmachineinterface
CNCmachinecontrol
OTS tool setter probe
Mounting bracket(optional)
Operating features (continued)
Synchronisation recovery
Themaximumtimeforsystemrecoveryfromanabnormal
operatingsituationis3.5seconds.
Suchatimedelaycouldcauseamachinealarmifcontrollers
requirereadysignalswithinatimeoflessthan3.5seconds.
OMI-2T optimum position setting
ToassistfindingtheoptimumpositionfortheOMI-2Tduring
systeminstallation,signalconditionreceivedisindicatedon
thered/yellow/greensignalconditionLED.
TheOMI-2Tmayhavetobeshieldedfromdirectlightsources
TheLEDindicationofablue,yelloworvioleterrorcondition
resultingfromthelossofagoodprobesignalwillpersistuntil
theactivesysteminput(Probe1orProbe2isdeactivated.
WARNING:
Iftwosystemsareoperatingincloseproximity,takecare
toensurethatsignalstransmittedfromtheprobeonone
machine,arenotreceivedbytheOMI-2Tontheother
machine,andviceversa.
OMI-2T status LEDs
AvisualindicationofsystemstatusisprovidedbyLEDs.
1. Start signal LED (yellow) FlashesoncewhenamachineinputSTARTsignalis activated.
2. Low battery LED (red) Red - Batterylow Off - BatteryOK
3. Probe status LED (green, red) ThisLEDislitwhentheOMI-2Tispowered. Green- Probeseated. Red - Probetriggeredorunknownstatus.
4. Error LED Indicatesatransmissionerrorcondition.
Red - Noprobetransmittingorprobeoutofrange. Blue -Amodulatedsignalfromasecondprobehas
beenreceived. Yellow- Interferenceoraweaksignalhasbeen
received. Violet - Interferenceoraweaksignalhasdelayed
thetriggerinstant.
5. Signal condition LED Red - Nosignal. Yellow -Weaksignal Green- Goodsignal.
6. Active system LEDs TheLEDislittoshowwhichmachineinput(Probe1orProbe2)isactive,andunlitwhenthesysteminputsareinactive.
Opticalcentreline
Mounting bracket (optional)
dimensionsmm(in)
3holesØ6.4(0.25)
25(0.98)
25(0.98) 19
(0.
75)
38(
1.50
)
45
(1.7
7)25
(0
.98)
30
(1.1
8)
3gripprotrusions
100.5(3.95)
90(3.54)
2.0
(0.0
8)
2.0(0.08)
3pairsofholesØ5.3(0.20)permitOMI-2Tmountinginalternativeorientation
45(1.77) 45°
NOTE: Maximumlengthofthespecifiedcablemustnotexceed25m(82ft).
• InstalltheOMI-2Twithcableexitingfromlowerside
forgoodcoolantrunoff.
• CableentrytotheOMI-2Tissealedwithagland.
• Cableprotectionagainstphysicaldamageshouldbe
providedbyflexibleconduit.
• Routethecableawayfrompotentialsourcesof
electromagneticinterference.
• Maintainthescreenthroughcablejoints.
Cable specification
Ø7.5mm(0.29in),13corescreenedcable,each
core18x0.1mm.
Standard cable variants
TheOMI-2Tstandardpolyurethanecablesare
8m(26ft)and15m(49ft)long.
Cable installation
3B3546
Dimensions
40(1.57)
84(3.30)
40(1.57)
40(
1.57
)
46.7(1.84)
45(
1.77
)
63(
2.48
)
16(0.63)
dimensionsmm(in)
Renishaw plc
NewMills,Wotton-under-Edge,Gloucestershire,GL128JRUnitedKingdom
T +44(0)1453524524 F +44(0)1453524901E uk@renishaw.com
www.renishaw.com
For worldwide contact details, please visit our main web site at www.renishaw.com/contact
*H-5439-8200-01*©2007Renishawplc.Allrightsreserved. Renishawreservestherighttochangespecificationswithoutnotice Issued11.07 Partno.H-5439-8200-01-A
Parts list –pleasequotethepartnumberwhenorderingequipment
Type Part no. Description
OMI-2Tkit A-5439-0049 OMI-2Twith8m(26ft)cableandtoolkit.
OMI-2Tkit A-5439-0050 OMI-2Twith15m(49ft)cableandtoolkit.
Mountingbracket A-2033-0830 MountingbracketforOMI-2T.
Conduitkit A-4113-0306 Conduitkitwith1m(3.28ft)ofpolyurethaneconduitandbulkheadconnector(M16thread).
Windowreplacementkit
A-5191-0019 Comprising:windowassemblywith‘O’ring,3xstainlesssteelM3x14mmlongscrews,3xstainlesssteelM3x5mmlongscrewsand2.5mmhexagonwrench.
Toolkit A-5191-0300 Comprising:2.5mmhexagonwrench,4mmhexagonwrench,14xferrules,2xM5screws,2xM5washersand2xM5nuts.
Publications.Thesecanbedownloadedfromourwebsiteatwww.renishaw.com
OMI-2T A-5439-8500 Installationanduser’sguideOMI-2T
OMP40-2 H-4071-8200 DatasheetOMP40-2
OMP400 H-2000-2324 DatasheetOMP400
OMP60 H-2000-2131 DatasheetOMP60
OTS H-5401-8200 DatasheetOTS
Wiring diagram (withoutputgroupings
shown)
12Vto30V
0V
Turquoise
Turquoise/black
Blue
Blue/black
Violet
Violet/black
Screen
OMI-2T
Pink
Red
Machineground(starpoint)
Powersupply(12Vdcto30Vdc)
Lowbattery(SSR)
Probestatus1(SSR)
Probestatus2(SSR)
Machinestartinput(Probe1)
Error(SSR)
White
Green
Green/black
Machinestartcommon
Machinestartinput(Probe2)
Black
Green/yellow
Brown
RENISHAWHASMADECONSIDERABLEEFFORTSTOENSURETHECONTENTOFTHISDOCUMENTISCORRECTATTHEDATEOFPUBLICATIONBUTMAKESNOWARRANTIESORREPRESENTATIONSREGARDINGTHECONTENT.RENISHAWEXCLUDESLIABILITY,HOWSOEVERARISING,FORANYINACCURACIESINTHISDOCUMENT.
Recommended