User Guide

Subject Specifications
Environmental
resistance
Bump
Acceleraction：98m/s
2
（10G）
Pulseduration：16ms
OutdoorOperation Notpermitted
Altitude Below2,000m
※1.Distancewhenreflectanceoftheobjectis90%orabove.
※2.Additionaldistanceof200mmisneededwhentheSE2Lisworkingunderhigh
reflectivebackground.
※3.TotalcurrentsupplyofOSSDoutputandWarningoutputshouldbebelow1.0A.
※4.Whenthelightsourceslocatedat≧5° fromthedetectionplaneofSE2L.
3.Dimensions(mm)
S D /2
N E L CK1
AR NG1
N E L CK2
W R I G2
S D3 4
95
67.4(Detectionplane)
80
17
(10)
(30)
29.5
33
21
270ﾟ
Scanningangle
Ethernet
(30)
Cable
9
Display
window
80
IPintialization
switch
USB
28
68
4-M5Depth8
32
66
SDcard
4.SE2Lcomponents
OS D1/2
N ER LOC 1
WA NING1
T RLO CK2
WA N ING2
O SD3 4
7-segment
display
Opticalwindow
HousingSDcardslot
EthernetConnector
CableMicroUSBConnector
5.Functions
SE2L'sfunctioncanbeconfigureusingtheSLSProjectDesigner.
(1)Scanningarea
Scanning area ofSE2Lconsists of protection zone and warning
zones.Maximum 32setsof areacanbe configured. Further, two
combinationsfor protection and warning zonescanbe selected for
theoperation.
a) Protectionzone, Warningzone 1 and
Warningzone2
b)2Protectionzones(DualProtection)
Indualprotection mode,two protection
areas can be configured therefore two
mchines can be protected byone unit
ofSE2L.Protection and warning zones
canbe configured byusingSLSProject
Designer.
●
Protectionzone
Protectionzoneissafety-criticalanddirectlyconnectedtotheOSSD
signal. Whenan obstacle is detected in theprotection zone,SE2L
willswitchthe OSSDfrom ON-state to OFF-state(which should
triggeraswitchtostopamachineorAGV).Formobileapplications,
theOSSDsignalcanbeusedastheemergencystopsignal.Figure
1shows the examplesofprotection zone configuredusing manual
modeand teachingmode respectively.User must configure these
zonesaccordinglytoensurehazardousareaiscompletelyprotected.
●
Warningzone
Warning zonesarenon-safety zones andareconnected to Warning1and
Warning2outputs.Whentheobstacleisdetectedinthewarningzones,SE2L
willswitchtherespectivewarningsignalfromON-statetoOFF-state.
Warningsignals can be usedas an alert signaltoavoid human beings or
objectsfromapproachingneartheprotectionzone.Formobileapplications,
warningsignals can beused for reducing thespeedof automatic guided
vehicle(AGV)toavoidcollision.
(2)OSSD
OSSDissafety-relatedsignal.Whenhumansorobjectsaredetected
intheprotectionzone,theOSSDsignalwillswitchtoOFFstatefrom
ON-state.OSSDsignalhastheself-diagnosticfunctionwhichtests
thesignalperiodically.SignaliscontinuouslyswitchedtoOFF-state
whenanerrorisdetectedduringthediagnostic.
Output states of OSSD1 and OSSD2 signal are identical. Both
signals should beconnected to the safety relatedmachines or
controlsystem to fulfill therequiredsafety level. If OSSD3and
OSSD4areusedtheymustbeconnectedinthesamemanner.
(3)Interlockfunction
Interlockisa function to prevent automaticrestartofthe OSSD
signalswitchingfrom OFF-state to ON-state. OSSD1/2,RESREQ1
andRESET1 are for protectionzone1; OSSD3/4,RESREQ2 and
RESET2areforprotectionzone2whensettingthesensorbySLS
ProjectDesigner.WeuseOSSD,RESREQandRESETintherest
ofthisdocumentasrepresentativeterms.
●
Automaticrestart
SE2Lwillrestartautomaticallywheninterlockfunctionisdisabledor
therestartinterlockfunctionisset"auto"wheninterlockisenabled.
Whenobstaclefromtheprotectionzoneis removed,OSSDsignals
switchfromOFF-statetoON-stateautomatically.
However, ifSE2Lis in the lockoutstatedue toerror, OSSDs will
remaininOFF-stateeveniftheinterlockfunctionisdisabled.
●
Manualrestart
When interlock functionis setto manual restart mode, evenif the
detectedobstacles orsystem error is removed,OSSD signals will
remain in OFF-state. Anexternal reset inputsignal isrequired to
releasethe interlock whichallowstheSE2Ltoswitchto normal
operation.RESREQ signal will beswitched to ON statewhen
obstaclesdisappearfrom protectionzone.SE2Lwillresumenormal
operation only after confirmingthe reset signal (RESET). The
durationoftheresetsignalshouldbemorethan500ms.AfterRES
REQsignal becomes ONandreset signal is confirmed,the OSSD
signalwillswitchtoON-stateafterthelapseoftheconfigureddelay
time.IfOSSD'sOFF-stateisduetoaninternalfault,itwillremain
in OFF-stateevenwhenreset signalis provided.Resetdelay is
configurableintherangeof1sto6s.
●
Manualstart
Start interlock isa function which keeps theOSSD in OFF-state
duringthe start-up until an externalreset input is applied. Start
interlock setting has onlymanual mode. The
 RESREQ signal
switches toON-state after theSE2Lcompletes initialroutines and
ready toaccept the RESETinput. When RESETinputis applied,
OSSDwillswitchtoONstateifnoobjectisdetectedintheprotection
zone.The duration of thereset input should bemorethan 500ms.
Delaycanbeconfiguredintherangeof1sto6s.
(4)Externaldevicemonitoring(EDM)function
EDMis afunctionthat monitors the stateof the input signalfrom
thecontrolled machine orautomated guided vehicle (AGV).EDM
isconfigured using theSLSproject designer.When EDM function
is enabled, anyfault detected in EDMsignal will switch theOSSD
signaltoOFF-state.LogicofEDMsignalshouldbealwaysinverseof
theOSSDsignal.EDMinputsignalON/OFFdelayisconfigurableto
matchtheuserʼssystem.PleasedonotconnectEDMinputwhen
thisfunctionisnotneeded.
(5)Mutingfunction
Muting function temporarily suspends the safetyfunctioninthe
configuredzoneofSE2Lwhenthespecifiedconditionsarefulfilled.In
themutingstateOSSDremainsintheON-stateevenwhenanobject
is detected in the configured mutingzone. Two independent hard
wiredinputsignalsareprovidedtostartandendthemutingfunction.
Mutingzone isconfiguredusing theSLSproject designer. When
mutinginputsfulfillthemutingstartconditions,SE2Lwillsuspendthe
safetyfunctionforthemutingzonewithin60ms.
●
Mutingstartcondition
Mutingfunctionwillstartwhenthefollowingconditionsarefulfilled:
a)TherearenoobjectsintheprotectionzoneandtheOSSDisin
ON-state.
b)Thetwoindependenthardwiredmutinginputsignalsareswitched
to ON state in the predefinedsequencewithin the pre-set time
interval.However,theswitchingintervalbetweentwoinputsignals
shouldnotbe0.
●
Mutingstopcondition
Muting functionwillstop whenany one of the condition belowis
fulfilled:
a)OneofthemutinginputsswitchestoOFF-state.
b)Whenthemutingstateexceedsthepredefinedmaximummuting
time.
c)Objectsaredetectedintheprotectionzonewhichisnotcovered
bythemutingzone.
d)Errorisdetectedbytheself-diagnosticsfunction.
e)Duringmutingstatewhentheareaisswitchedtoanotherarea.
●
Mutingoverridefunction
Mutingoverride isa function to recoverSE2Lwhen theOSSD is
switchedto OFFstate due to mutingrelated errors by temporarily
suspendingthesafetyfunction.Overridefunctionisactivewhenthe
overrideinput(OVERRIDE1/2)andtheresetinput(RESET1/2)are
switchedinasequence.
(6)Referencemonitoringfunction
Referencemonitoringisafunctiontomonitorthedisplacementofthe
SE2Lorthestructureusedasreferenceboundary.
●
Accessprotection
Anexampleofreferencemonitorfunctionusedforaccessprotection
isshown in figure 1.Reference segments should be configured
on eachsurface for displacement detection. Referencesegments
shouldbeconfiguredsuchthatdisplacementcanbeeasilydetected.
TheOSSD will switch to OFF-state when access penetration is
detected,andalso if the distance betweenSE2Land the reference
structure changes. This function is compulsory for vertical
applications.
Floor
Protectionzone
Referencesegment
Referencestructure
rconfiguring 2 or more
reference segments for
displacementdetection.
Fig-2.Frontviewoftheaccessdetectionusingreferencemonitorfunction
※Thisfunctioncanbealsousedinareaprotectionapplications.RefertoUser's
Manualforthedetail.
(7)Areasequencefunction
Areasequenceisafunctiontomonitorsequencesofareaswitching.
Whenthisfunctionisactivated,OSSDsignalwillswitchtoOFF-state
iftheswitching pattern isotherthantheconfiguredsequence. This
functionprevents themachine tooperatewith random protection
zone.
Fromeacharea,switching selection tomaximum31otherareas is
possiblewhenconfiguringtheareasequence.And,itisnecessaryto
specify1ormoreareastoavoiderror.
＜ Areaswitchingsequence ＞
Whenareasequence is disabled,SE2Lcanswitchfromanareato
anyother areas(Figure 3) whereas it canonly switch to specified
areasifareasequenceisenabled.(Figure4).
Areasequencefunctionisrecommendedforcontrolsystemswhere
switchingareasequencescanbeconfigured.
Fig-3.
Operationwithoutareasequence  Fig-4.Operationwithareasequence
(8)Responsetime
ResponsetimesofOSSDsignal,OFFresponsetime(Default60ms)
andONresponsetime(Default270ms)areconfigurableindividually
foreach area using theSE2Lprojectdesigner. Response time of
theWarning1andWarning2will besameastheOSSD response
time.Table 1 shows the possibleconfigurable values.Inthe dual
protectionmode, it ispossible to setaseparate response time for
eachprotectionarea.
Whenlonger response time isconfigured,the stability ofSE2Lcan
beincreased.However,longerresponsetimerequireslongersafety
distance.Usermustperformriskassessmentbeforeconfiguringthe
responsetime.Additionofmaximum1cycle(30ms)hastobetaken
intoaccountfortheareaswitching.
Table-1.ResponsetimeofSE2L
OFF
(ON->OFF)
Responsetime（ms）
60 90 120 150 180 210 240 270
300 330 360 390 420 450 480 510
ON
(OFF->ON)
Responsetime（ms）
270
300 330 360 390 420 450 480 510
(9)Areaswitching
Amaximumof32setsofareacanbeconfiguredinSE2L.However
themaximum configurable area number differs dependingon the
selectedfunctionsuchas,mutinganddualprotection.Table2shows
themaximumconfigurableareanumberaccordingtotheusedmode.
External input signalsare provided inSE2Lforswitching the area.
Eachsignalhasapairofnormalandinverted signal.Forexample,
it isnecessary toprovide both inputsignal INAandinverseIN
Asignaltoswitchthearea.ErrorwilloccurifINAandinverseIN
Asignals donotcomplement eachother. Table3-2below shows
the combination of inputsignal to switch thearea. Area inusewill
be displayed inthe7 segment LED ofSE2L. Itis also possible to
configurearea input delay. Configurethenecessary delay required
forthe system toprovidestable input signalstoSE2L. The default
valueis30ms.
Therearemaximum5inputpairs(apairisacombinationofnormal
andinvertedsignal)inSE2Ltherefore,itcanoperatewithmaximum
32setsofarea.Further,itisalsopossibletoswitchtheareathrough
thespeed monitoring of increment encodersignal connectedto
SE2L.
Table-2.Inputcombinationforareaswitching
Mode Protection
Maxinternal
input
MaxArea
Maxencoder
area
Standard
1 5 32 ー
2 5 32 ー
EDM
1 4 16 ー
2 4 16 ー
MUTING/EDM
1 2 4 ー
2 1 2 ー
Encoder
※１
1 2 3 32
※2
※1.Muting functionand dualprotectionmodecannotbe usedif encoderinput
modeisselected.
※2.Amongthe4inputpattersatleastonepatternmustbeusedforencoderinput.
Otherremaining3patternscanbeselectedtobeusedasstaticinputornotin
use.Apatternwithencoderinputmodecanhavemaximum32setsofarea.
Area1
Area2
Area3
．．．
Area32
Area1
Area2
Area3
．．．
Area32
Fig-1.Protectionzoneconfigured
usingmanualmode