4.1.5Numberofsignalgroups

”Numberofsignalgroups”isusuallyalreadydecidedintrafficdesign.Itdependsonthein-tersectionlayoutandnumberofsignalizeddirections(itisnotthesamenumberasnumberofsignalheads).

Figure24:Numberofsignalgroups

Forexample,forthefollowingintersectionlayoutyouwouldhavetoprogram6signalgroups.4vehiclegroups(G1,G2,G3,G4)and2pedestriangroups(P5,P6).

Figure25:Numberofsignalgroupsintersectionlayout

4.1.6Failuremodedark/yellowflashing

Therearetwomaincriticalfailuremodesavailable:darkandyellowflashing.TheFailuremodeconcernscriticalfailureswhenthecontrollercan’tstayinthreecolorsoperationanylonger.

Figure26:Numberofsignalgroups

4.2 Additionalsettings-STEP1

4.2.1Mainsvoltagesupervision[V]

Formoreinformationaboutmainsvoltagesupervisionsee:APPENDIXIIIsection15page162

_{4.2.2Controloptions}

_{Figure27:Controloptions}

Countryareacode

Someparametersdependonthesettingofthecountrycodeareaparameter.Thiswillbementionedintheindividualparameterdescriptionwhenthisisthecase-”ITC-2Programmersmanual-v86.pdf”

Figure28:Countryareacode

Intergreentimeoptions

ThisintergreentimeoptionapplytoparameterfunctionF997(STEP3)andF006(STEP8).TheintergreentimecanbecountdowninatwodifferentwaysintheITC-2controller.

Figure29:Intergreentimeoptions

Flashingsignalsfrequency

Youcandecidethefleshingsignalsfrequencyseparatelyforred,yellowandgreen.

Figure30:Flashingsignalsfrequency

4.2.3Plans(trafficprograms)triggeringpriority

Theplansourcepriority(F994)Atrafficplanselectedbyforcedplan(F0N20)orfromfailuremode(F0N25)havethehighestplansourcepriority-prioritylevel0.PlanchangestothesesourceswillalwaysbeimmediatelyifnotsetinF994N12accordingtoplanchangemodedenedbyparam-etersF3PN20toF3PN23.Theprioritylevelofplansourcesfromtrafcsituation(parameterF2SN1)andstartupplan(parameterF0N22)arexedtolevel12and13respectively.PlanchangestothesesourceswillbeaccordingtoplanchangemodesdenedbyparametersF3PN20toF3PN23.Theremainingplansourceprioritiescanbesetinthisfunction.Multiplesourcescansharethesameprioritylevelbutthesourcewiththehighestdefaultlevelamongthesesourceswillinternallyhavethehighestpriority.Howeverasourcewhichissettousethedefaultlevelwillhavethelowestpriorityamongsourceswithsharedprioritylevel.ThisfunctionrequiresITCv5.50orhigher.

Figure31:Plans(trafficprograms)triggeringpriority

TS(Trafficsituation),FP(Forced),LP(LocalProgram),EM(Emergencylogic),WS(Workstation),CB(ControlBlock),CL(Calendarclock),TP(Traffic-Programmaster)andST(Startprogram).

_{4.3 STEP2-Signalgroups}

_{Figure32:STEP2}

4.3.1Signalgrouplist

Thesignalgrouplistisbasedonthreesections:groupname(1),signalgrouptype(2)andminsignalgroupsequence(3).

Figure33:Signalgroupslist

4.3.2Signalgroupname(1)

Thesignalgroupnamecanbeanytextwithmax5characters.Itisusual”G1”,”G2”or”V1”,

”V2”forthevehiclegrouptypesand”P1”,”P2”forthepedestriangrouptypes.

4.3.3Signalgrouptype(2)

Choosethesignalgrouptypefromthelist.

Figure34:Signalgroupstype

ThereisavariousnumberofdifferentsignalgrouptypesspecificfortheITCcontroller.Mostpopulartypesare1and8respectivelyforvehicleandpedestriangroups.

Figure35:Mostcommonsignalgroupstype

4.3.4Signalgroupsminsequence(3)

Thesignalgroupminsequenceisdifferentineachcountry.Somecountriesdon’tusered/yel-lowsignalinthebeginningofgreensignal,whileothercountriesrequire3oreven4sred/yel-low.

Figure36:Redyellowsignal

Therearealsodifferentrequirementsconcerningthemingreentime.Somecountriesrequire

5swhentheothercountriesfollow7smingreentimerule.

Figure37:Mingreen

Differentcountrieshavealsodifferentwaysofchangingfromgreentored.Somecountriesrequire4sgreenflashingplus3sonyellowsignal.Othercountrieschangefromgreendirectlytored.

Figure38:Changingtored

TheseandmanydifferentsignalgroupsequencescanbeprogrammedintheITCcontroller.Activateeachsignalperiod(red/yellow,mingreen,greenflashingoryellow)bytypingtimeinseconds.Youcanalsoeasilydeactivatespecificperiodsbytyping00.0s.

Marksignalgroupsonthelistaboveandpress”Apply”button(1)toupdatethegroupswith

thepredefinedsignalgroupsequence(2).

Figure39:Signalgroupsminsequence

Formoreinformationaboutspecialgrouptypesandspecialgroupsequencessee:Specialsignalgroupsequenceprogrammingsection10page127.