Kongsberg Simrad SU90 Series User manual

kongsberg.com/simrad
Simrad SU90
TECHNICAL
SPECIFICATIONS

396237/C
April2023©KongsbergMaritimeAS
PUBLIC
SimradSU90
Fish-ndingsonar
Technicalspecications
Thepurposeofthispublicationistopresentthetechnicalspecications
relatedtotheSimradSU90system.Thesetechnicalspecications
summarizethemainfunctionalandoperationalcharacteristicsofthe
SU90Fish-ndingsonar.Theyalsoprovideinformationrelatedtopower
requirements,physicalpropertiesandenvironmentalconditions.
AtKongsbergMaritime,wearecontinuouslyworkingtoimprovethe
qualityandperformanceofourproducts.Thetechnicalspecications
maybechangedwithoutpriornotice.
Caution
YoumustneverpermittheSU90systemtotransmit(ping)whenthe
shipisinadrydock.Thetransducercanbedamagedifittransmitsin
theopenair.
Additionalend-userdocumentsrelatedtotheSU90systemcanbefound
onourwebsite.Thisincludespublicationsthataretranslatedintoother
languages.SelectedpublicationsarealsoprovidedinIETM(Interactive
ElectronicTechnicalManual)formats.
•https://www.kongsberg.com/su90

KongsbergMaritimeAS
www.kongsberg.com
Documentinformation
•Product:SimradSU90
•Document:Technicalspecications
•Documentpartnumber:396237
•Revision:C
•Dateofissue:14April2023
Copyright
TheinformationcontainedinthisdocumentremainsthesolepropertyofKongsbergMaritimeAS.Nopartof
thisdocumentmaybecopiedorreproducedinanyformorbyanymeans,andtheinformationcontainedwithin
itisnottobecommunicatedtoathirdparty,withoutthepriorwrittenconsentofKongsbergMaritimeAS.
Warning
Theequipmenttowhichthismanualappliesmustonlybeusedforthepurposeforwhichitwasdesigned.
Improperuseormaintenancemaycausedamagetotheequipmentand/orinjurytopersonnel.Y oumustbe
familiarwiththecontentsoftheappropriatemanualsbeforeattemptingtooperateorworkontheequipment.
KongsbergMaritimedisclaimsanyresponsibilityfordamageorinjurycausedbyimproperinstallation,
useormaintenanceoftheequipment.
Disclaimer
KongsbergMaritimeASendeavourstoensurethatallinformationinthisdocumentiscorrectandfairlystated,
butdoesnotacceptliabilityforanyerrorsoromissions.
Supportinformation
Ifyourequiremaintenanceorrepair,contactyourlocaldealer.Youcanalsocontactususingthe
followingaddress:[email protected].Ifyouneedinformationaboutourotherproducts,visit
https://www.kongsberg.com/simrad.Onthiswebsiteyouwillalsondalistofourdealersanddistributors.

396237/C3
Tableofcontents
SIMRADSU90..............................................................................7
Important.................................................................................................................................8
Systemdescription................................................................................................................10
Systemdiagram.....................................................................................................................12
Systemunits..........................................................................................................................13
Displaydescription......................................................................................................13
ProcessorUnitdescription...........................................................................................14
TransceiverUnitdescription.......................................................................................15
HullUnitdescription...................................................................................................16
Transducerdescription................................................................................................17
Installationtrunkdescription.......................................................................................19
Additionalrequiredandoptionalitems.................................................................................20
Installationtrunkrequirement.....................................................................................20
Speedlogrequirement.................................................................................................21
Coursegyrorequirement.............................................................................................21
Uninterruptiblepowersupply(UPS)requirement......................................................21
OperatingPaneloption................................................................................................22
Globalpositioningsystem(GPS)option.....................................................................22
Scopeofsupply.....................................................................................................................24
Orderinformation.................................................................................................................25
Generalsafetyrules...............................................................................................................26
Installationrequirements.......................................................................................................28
Supplyvoltagerequirements.......................................................................................28
Uninterruptiblepowersupply(UPS)requirements.....................................................28
Cablesandwiringrequirements..................................................................................29
Compassdeviationrequirements.................................................................................29
Noisesources...............................................................................................................29
Drydockingrequirements...........................................................................................30
Requirementforclassicationapproval......................................................................30
Networksecurity...................................................................................................................31
Supportinformation..............................................................................................................32
TECHNICALSPECIFICATIONS....................................................35
Introductiontotechnicalspecications................................................................................36
Performancespecications...................................................................................................36
Technicalspecications

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Powerrequirements..............................................................................................................41
Displaypowerrequirements........................................................................................41
OperatingPanelpowerrequirements(Mk1)...............................................................41
OperatingPanelpowerrequirements(Mk2)...............................................................42
OperatingPanelpowerrequirements(Mk3)...............................................................42
TransceiverUnitpowerrequirements.........................................................................42
HullUnitpowerrequirements.....................................................................................43
Weightsandoutlinedimensions...........................................................................................44
Displayweightandoutlinedimensions.......................................................................44
OperatingPanelweightandoutlinedimensions(Mk1)..............................................44
OperatingPanelweightandoutlinedimensions(Mk2)..............................................45
OperatingPanelweightandoutlinedimensions(Mk3)..............................................45
TransceiverUnitweightandoutlinedimensions........................................................45
HullUnitweightandoutlinedimensions....................................................................46
Environmentalrequirements.................................................................................................48
Displayenvironmentalrequirements...........................................................................48
OperatingPanelenvironmentalrequirements(Mk1)..................................................48
OperatingPanelenvironmentalrequirements(Mk2)..................................................49
OperatingPanelenvironmentalrequirements(Mk3)..................................................49
TransceiverUnitenvironmentalrequirements............................................................49
HullUnitenvironmentalrequirements........................................................................50
Compasssafedistance..........................................................................................................51
Displaycompasssafedistance....................................................................................51
OperatingPanelcompasssafedistance(Mk1)............................................................51
OperatingPanelcompasssafedistance(Mk2)............................................................52
OperatingPanelcompasssafedistance(Mk3)............................................................52
TransceiverUnitcompasssafedistance......................................................................52
HullUnitcompasssafedistance.................................................................................52
Minimumdisplayrequirements............................................................................................53
DRAWINGFILE..........................................................................54
Aboutthedrawingsinthedrawingle.................................................................................55
494024ProcessorUnitoutlinedimensions(HT20470/DC).................................................56
494025ProcessorUnitoutlinedimensions(HT20470/AC).................................................59
204688OperatingPaneldimensions(Mk1).........................................................................62
443179OperatingPaneldimensions(Mk2).........................................................................64
440689OperatingPanelcut‑outdrawing(Mk2)..................................................................67
439594OperatingPaneladapterplate(Mk2).......................................................................68
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476352OperatingPaneldimensions(Mk3).........................................................................70
489582Transceiverdimensions(Mk2)................................................................................73
381457Transceiverdimensions(Mk1/Old).........................................................................76
379507HullUnitdimensionsSU92.....................................................................................79
379506HullUnitdimensionsSU93.....................................................................................82
411053HullUnitdimensionsSU94.....................................................................................85
372751Installationtrunkdimensions...................................................................................88
374676Installationtrunkextender(180mm)......................................................................91
207485Blindangedimensions(ø760mm)........................................................................94
082973MountingangeDN500..........................................................................................95
083045GatevalveinstallationDN500.................................................................................98
33498GatevalvedimensionsDN500................................................................................100
37357GatevalvedimensionsDN500................................................................................103
DATAGRAMFORMATS..............................................................106
Technicalspecications

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SimradSU90

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SimradSU90
Topics
Important,page8
Systemdescription,page10
Systemdiagram,page12
Systemunits,page13
Additionalrequiredandoptionalitems,page20
Scopeofsupply,page24
Orderinformation,page25
Generalsafetyrules,page26
Installationrequirements,page28
Networksecurity,page31
Supportinformation,page32
SimradSU90

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Important
TheSU90isanadvancedproduct.Itisusedwithotheradvancedproducts.Thereis
importantinformationthatyouneedtoknow.
Watertightintegrity
Thesize,locationanddesignofthesonarroommustfullalltherequirementstothe
vessel’swatertightintegrity.
Intheeventofamajorleak,itmustbepossibletocloseallwatertighthatchesand/ordoors
totheroomtomaintainvesselstabilityandsafety.Thephysicalsizeofthesonarroommust
belimited,sothatintheeventofamajorleak,theoodingoftheroomwillnotinduce
instability,orcausethevesseltocapsizeorsink.
Formoreinformation,seeSonarroomrequirements.
Mechanicalsupportoftheinstallationtrunk
Theinstallationtrunkmustbesecuredtothebulkheadsand/orthehullbymeansof
strengtheningplates(stiffereners).Thedimensionsandstrengthoftheplatesmustbe
adequatetopreventanyvibrations.Thisisaninvariablerequirementtoensurethesafetyof
theSU90systemandthevessel.
Theshapeandlocationsofthestrengtheningplatesmustbedeterminedbytheinstallation
shipyardbasedonthephysicalpropertiesoftheinstallationtrunk,thehullandthespace
available.Minimumfourstrengtheningplatesmustbeused.Eachstrengtheningplatemust
extendallthewayfromthebottomtothetopoftheinstallationtrunk.Onlyleaveasmall
gaptoallowaccesstotheboltsandnutsusedtosecurethemountingange.Theminimum
platethicknessis10mm,buttheclassicationsocietycanspecifyotherdimensions.
Mechanicalsupportofthehullunitgantry
Thehullunitgantrymustbesecuredtothebulkheadbymeansofmechanicalsupport
brackets.Thedimensionsandstrengthofthesupportbracketsmustbeadequatetoprevent
vortexinducedvibrations.Thisisaninvariablerequirementtoensurethesafetyofthe
SU90systemandthevessel.
Werecommendthatsupportbracketsareplacedpointingatminimumthreedirectionswith
approximately120degreesbetweenthem.
Themechanicalsupportbracketsmustbedesignedandmanufacturedbytheinstallation
shipyardtotthecompleteinstallationinthesonarroom.Allcalculationsmadetosupport
thedesignmustmeettheapplicablesafetyrequirements,andapplytothephysicalproperties
ofthecompleteinstallation.
SimradSU90Technicalspecications

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BeforeyouturnontheSU90system
BeforeyouturnontheSU90system,makesurethatyouhavesufcientwaterdepthto
lowerthetransducer!
Caution
YoumustneverturnontheSU90systemwhentheshipisindrydock.Thetransducercan
bedamagedifittransmitsintheopenair.
WhentheSU90systemisnotused
WhenyoudonotusetheSU90system,turnitoff.
Note
YoumustneverturnofftheSU90systembymeansoftheon/offswitchontheProcessor
Unit.YoumustALWAYSusetheOperatingPanel.
Whenyouaredockingyourvessel
YoumustneversettheSU90systemtonormaloperationwhentheshipisindrydock.The
transducercanbedamagedifittransmitsintheopenair.Topreventinadvertentuseofthe
SU90system,pulloutthemainsplugontheProcessorUnitwheneveryourvesselisindry
dock.Additionalprecautionarymeasurersshouldbeconsidered.
Ifsomethingbreaksdown
Ifyoubelievethatsomethinghasbrokendown,contactyourlocaldealer.Alistofallour
dealersisprovidedonourwebsite.
•https://www.kongsberg.com/su90
Ifyouareunabletocontactadealer,observethesupportinformationinthispublication.
WhenyouwanttoturnofftheSU90system
YoumustneverturnofftheSU90systembymeansoftheon/offswitchontheProcessor
Unit.WhenyoudonotusetheSU90system,turnitoffwiththePowerbuttononthe
OperatingPanel.IfthetransducerisloweredwhenyouturnofftheSU90system,itis
automaticallyretractedtoitsupperposition.
Note
IfyouturnofftheSU90systembymeansoftheon/offswitchontheProcessorUnityoucan
damagethesoftwareandtheinterfacesettingsusedtocommunicatewithexternaldevices.
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Manualoperationofthehullunit
Intheeventofimproperoperation,thepowerfulelectricmotoronthehullunitmaycause
seriousdamagetotheequipmentand/orinjurytopersonnel.Therefore,beforeyoustart
manualoperation,readcarefullythroughtherelevantoperatingprocedures.
Note
Youmustfamiliarizeyourselfwiththecorrecthandlingmethodsandtherelevantsafety
requirements.
Rulesfortransducerhandling
Atransducermustalwaysbehandledasadelicateinstrument.Incorrectactionsmaydamage
thetransducerbeyondrepair.Aphysicalblowtothetransducerfacemayeasilydamageone
ormoreelements.Observethesetransducerhandlingrules:
•Donotactivatethetransducerwhenitisoutofthewater.
•Donothandlethetransducerroughly.Avoidimpacts.
•Donotexposethetransducertodirectsunlightorexcessiveheat.
•Donotusehigh-pressurewater,sandblasting,metaltoolsorstrongsolventstoclean
thetransducer.
•Donotdamagetheouterprotectiveskinofthetransducer.
•Donotsteponthetransducercables.
•Donotdamagethetransducercables.Avoidexposuretosharpobjects.
Systemdescription
TheSimradSU90isalongrangeandlowfrequencyshndingsonarwitha360degrees
coverage.TheSU90systemisdesignedformediumandlargesizedshingvessels.It
wasoriginallydevelopedforpurseseiners,butexperiencehasproventhatitisalsowell
suitablefortrawlers.
Ifhighperformanceisyournumber1criteriawhenchoosingasonar;suchaslongrange,
highresolution,narrowbeamsandhighsourcelevels,thisisyournaturalchoice.Wemade
nocompromisesduringthedesignoftheSU90system.Ourgoalwassimplytomakethe
ultimatehighperformanceshndingsonar.
Thecentreoperationalfrequencyis26kHz.Y oucanselectanyoperationalfrequency
from20to30kHz.Thecylindricalmulti-elementtransducerallowstheomnidirectional
sonarbeamstobetiltedelectronically.Thisallowsyoutoautomaticallytrackschools
ofsh,andtoobservethewholewatervolumearoundthevessel.Astabilizingsystem
SimradSU90Technicalspecications

396237/C11
isincludedforelectronicpitchandrollcompensation.ComparedtotheSimradSX90,
thenumberofchannelsisincreasedby50%givingthesonaranevenbetterperformance
inselectivityandrange.
TheSU90systemoffersanumberofstandardinterfacelinesforcommunicationwith
peripheraldevicesandsensors.Typicalinputsaregeographicalinformationfroma
positioningsystem,vesselspeedandcurrentheading.Bydefault,theSU90systemusesa
built-inmotionsensor.Forimprovedoperationalaccuracy,anexternalmotionreferenceunit
(MRU)canbeconnected.
Thenarrowbeamopeningangleandtheincreasedsourcelevel
(3dB)makestheSU90averypowerfulandhighresolution
lowfrequencysonar.ThenarrowbeamsprovidedbytheSU90
systemgiveyouseveraladvantages.
•Theyincreasetherangeandresolution,andofferavertical
viewwithadditionaldetailsandaclearerpicture.
•TheymaketheSU90systemevenmoreidealwhenyou
needtosearchforshclosetotheseabottom,orclosetothe
surface,atlongranges.
•Theyprovideafarbetterverticalviewwithless"bottom
climbing"thatwhatisseenonsonarswithawiderbeam.
•Thenarrowbeamsalsodecreasethenoiselevel.
TheSU90systemoffersthesameuserinterfaceandoperating
softwareasourothersonars,echosoundersandcatchmonitoring
systems.Thisenableseasierandfastertrainingofnewusers.
•Theechopresentationsareoptimisedformultipledisplays.Providedthatyouhave
connectedadditionaldisplaystoyourProcessorUnit,youcanusetheDockingViews
functiontotakeanysonarviewandplaceitonaseparatedisplay.Whenyoumovea
viewtoanotherdisplay,itwillautomaticallybescaledforthebestpossibleresult.
•Itiscommonforsonarstorequiremanypingstobuildthevariousviewsintheecho
presentation.OntheSU90,allthesonarviewsinthepresentationarebuiltusingthe
echoesfromonesingleping.Thisdramaticallyimprovestheupdaterateandprovides
betterreal-timeinformation.
•TheSU90systempermitsyoutorecordreal-timesonarsituations.Thisallowsyouto
replaycompletesequences.Theplaybackcontainstheexactsameechoinformation,and
canbeusedformissionhistory,trainingortroubleshootingpurposes.
Greatemphasishasbeenplacedonanintuitiveuserinterfaceandthebestpossiblesonar
presentationsonahighresolutioncolourdisplay.
TheSU90systemisequippedwiththecelebratedsignalprocessingsoftwaredevelopedby
KongsbergMaritime.ThisincludesHyperbolicFM(HFM)transmissions.Thispulsetype
isalsoknownas"chirp".Itensuresaclutterfreepicturewithveryhighresolutioninrange.
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Thesignalprocessingandbeamformingisperformedinafastdigitalsignalprocessing
systemusingthefulldynamicrangeofthesignals.
TheSU90systemsoftwareoperatesusingtheMicrosoft®Windows®operatingsystem.
Systemdiagram
ThesystemdiagramidentiesthemaincomponentsofabasicSU90system.Onlythe
mainconnectionsbetweentheunitsareshown.Detailedinterfacecapabilitiesandpower
cablesarenotshown.
ADisplay(Theseconddisplayis
optional.)
BProcessorUnit
COperatingPanel
DTransceiverUnit
EHullUnit
FHoistingmotor
GMotorControlUnit
HTransducer
Inthispublication,thecomputercanalso
bereferredtoastheProcessorUnit,and
viceversa.
Unlessotherwisespeciedinacontract,
thedisplayisnotincludedinthestandard
delivery.Thisisacommercialitemthat
canbepurchasedlocally.
Achoiceofhullunitsisavailable
fortheSU90system.Thehullunits
offerdifferentphysicalpropertiesand
loweringdepths.Thesametransducer
isusedonallhullunittypes.
SimradSU90Technicalspecications

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Systemunits
Topics
Displaydescription,page13
ProcessorUnitdescription,page14
TransceiverUnitdescription,page15
HullUnitdescription,page16
Transducerdescription,page17
Installationtrunkdescription,page19
Displaydescription
AdisplayisarequiredpartoftheSU90system.Forbestreadability,thedisplaymustbe
protectedfromglareandhavethecorrectheightandangle.
AnycommercialdisplaycanbeusedwiththeSU90system,providedthatthechosendisplay
meetstheminimumrequirements.
Tip
YoumaynditusefultohavemorethanonedisplayconnectedtotheSU90system.The
numberofdisplaysmustbechosentotthepreferencesofthecrew.
Thedisplayisnotastandardpartofthedelivery.Thisisacommercialitemthatcan
bepurchasedlocally.KongsbergMaritimemayprovideasuitabledisplay.Thechosen
displaymustbedesignedformaritimeuse,anditmustmeettheminimumperformance
specications.Thevideointerfacemustmatchtheoutputformat(s)providedbythe
ProcessorUnit.
Relatedtopics
SimradSU90,page7
Systemunits,page13
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ProcessorUnitdescription
Adedicatedmaritimecomputerisprovided.Inthispublication,thecomputercanalsobe
referredtoastheProcessorUnit,andviceversa.
TheProcessorUnitisaruggedandpowerfulcomputer.
Itisdesignedforlonglifeinademandingmaritime
environment.TheProcessorUnitcontainstheoperational
software,andofferstheuserinterfacethatallowsyou
tocontroltheSU90system.Furthermore,itoffersa
numberofserialandEthernetlinesforcommunication
withexternaldevices.TheProcessorUnitisnormallymountedonthebridge.
TheHT20470ProcessorUnitisavailableintwoversions.TheDCversionoperateson+24
VDCwhiletheACversionoperateson100to240V AC.
Powersupply:
•Manufacturer:MeanWell
•Manufacturer’swebsite:https://www.meanwell.com
•Typedesignation:SDR-240-24
•KongsbergMaritimepartnumber:488156
Note
TheProcessorUnitdoesnotcontainanyfans.Itwillbeverywarm,evenduringnormal
operation.Thisisbydesign.Airowaroundtheunitwillsignicantlyincreasetheeffect
oftheheatsinksandtherebyalsothelifetimeoftheunit.Suchanairowishighly
recommended.Thecomputerhasbeentestedandveriedwithambienttemperaturesupto
50degreesCelsius.Alowerambienttemperatureishoweverpositivefortheitslifetime.
Note
TheProcessorUnitdoesnotcontainanyfans.Itwillbeverywarm,evenduringnormal
operation.Thisisbydesign.
Relatedtopics
SimradSU90,page7
Systemunits,page13
SimradSU90Technicalspecications

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TransceiverUnitdescription
TheTransceiverUnitisprovidedtotransmitacousticenergythroughwater.Aftereach
transmission,thetransceiverreceivestheechoesfromtheseabedand/orthewatercolumn.
Theseechoesareltered,ampliedandnallyconvertedintodigitalformat.This
transmissionandreceptionsequenceiscommonlyreferredtoasaping.
TheTransceiverUnitisnormallylocatedinthesonarroom.Itismountedonthebulkhead
usingpowerfulshockabsorbers.Thephysicaldistancetothehullunitislimitedbythe
lengthofthetransducercables.
Thetransceivercontrolsthetransmissionandreceptionmadebythetransmittersand
receiverchannels.12identicaltransceiverboardsareused.Thesetransceiverboards
provide384individualtransmit-andreceiverchannels.TheTransceiverUnitalsoholdsan
Ethernetswitchandalargecapacitorbank.Aninternalpowersupplyisprovidedtosupply
therequiredDCvoltagestotheTransceiverUnit.
AhighqualityEthernetcableisusedforcommunicationwiththeProcessorUnitonthe
bridge.AnotherhighqualityEthernetcableisusedtoconnecttheTransceiverUnittothe
MotorControlUnitonthehullunit.
Itisveryimportantthathigh-qualityEthernetcablesareused.Donotmaketheconnection
usingtheexistinglocalareanetwork(LAN).
Tip
WerecommendthatyouinstallanextraEthernetcablebetweentheTransceiverUnitand
theProcessorUnit.
Thetransducercablesarepluggedintothesidewallofthetransceivercabinetusingaspecial
connector.Theconnectorsforpowerandinterfacesarelocatedatthebottomofthecabinet.
Note
ToextendthelifetimeoftheTransceiverUnit,itmustbemountedatdryandcleanlocation
withsufcientventilation.Observethesonarroomrequirements
TheTransceiverUnitcanbettedwithacommercialheatexchanger.Thepurposeofthe
heatexchangeristoprovideastable,cleanandtemperaturecontrolledenvironmentfor
theelectroniccircuitryinsidetheTransceiverUnit.Theheatexchangeralsoinhibitsdust
anddirtparticlesfromenteringthetransceiver.Theheatexchangerispoweredfrom230
V ACusingaseparateoutlet.
Relatedtopics
SimradSU90,page7
Systemunits,page13
SimradSU90

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HullUnitdescription
Thehullunitisusedtolowerthetransducerdownbelowtheship’shullwhentheSU90
systemshallbeused.WhentheSU90systemisturnedoff,thetransducerishoistedfor
protection.Thehullunitislargeandcrucialpartofthesonarsystem.
Thehullunitisamechanicalconstruction.Itismountedonthetopoftheinstallationtrunk.
Theinstallationtrunkpenetratestheship’shull,andallowsthetransducertobeloweredinto
thesea.Thehullunitisnormallylocatedintheforwardpartofthevessel.Thislocationis
recommendedtoavoidthenoisefromthepropellersandtheengine.
Caution
Whenthetransducerislowered,thedepthofwaterunderthevesselmustbemonitored
closely.
Ifthetransducerhitslargerobjectsorbottom,thetransducershaftmaybebent,or-in
worstcase-itcanbebrokenoff.Abrokentransducershaftwillcausewaterleakage
throughthetopoftheshaft.Ifyoususpectthatthetransducershaftisseriouslydamaged
withholes,donotretractthetransducertoitsupperposition.
Topreventseriousdamagetothevesselorthevesselstability,youmusthaveawater
pumpandawarningsysteminthesonarroom.
IfyouforgettohoistthetransducerbeforetheSU90systemisturnedoff,thetransducer
ishoistedautomaticallybeforethepowerisdisconnected.Thetransducerisalsohoisted
automaticallyifaseriousmalfunctionoccurstothecommunicationbetweenthebridge
andthehullunit.
Intheeventofimproperoperation,thepowerfulelectricmotoronthehullunitmaycause
seriousdamagetotheequipmentand/orinjurytopersonnel.Therefore,beforeyoustart
manualoperation,readcarefullythroughtherelevantoperatingprocedures.Youmust
familiarizeyourselfwiththecorrecthandlingmethodsandtherelevantsafetyrequirements.
TheSU90systemcanbeprovidedwithoneofthefollowinghullunits:
HullUnitLoweringdepth(m)Transducercable(m)Maximumspeed
(knots)
4.6 SU921.2
7
21
4.6 SU931.6
7
16
4.6 SU942.1
7
11
Thesametransducerisusedonallhullunittypes.
IfaHullUnitControllerissuppliedwiththesystem,theMotorControlUnitcabinetisusedasajunctionbox.
SimradSU90Technicalspecications

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Onsomevessels,additionaltransducerprotectionisrequired.Oneexampleisvessels
workinginarcticconditions.Itisimportantforthemtopreventicefromdamagingthe
transducer.Agatevalveisthenaddedtothehullunitinstallation.Bymeansofamechanical
constructionitshutsoffthebottomoftheinstallationtrunkwhentheSU90systemisnot
used.
Formoreinformation,refertotheend-userdocumentationprovidedbythemanufacturer.
Important
Thehullunitgantrymustbesecuredtothebulkheadbymeansofmechanicalsupport
brackets.Thedimensionsandstrengthofthesupportbracketsmustbeadequatetoprevent
vortexinducedvibrations.Thisisaninvariablerequirementtoensurethesafetyofthe
SU90systemandthevessel.
Werecommendthatsupportbracketsareplacedpointingatminimumthreedirectionswith
approximately120degreesbetweenthem.
Themechanicalsupportbracketsmustbedesignedandmanufacturedbytheinstallation
shipyardtotthecompleteinstallationinthesonarroom.Allcalculationsmadetosupport
thedesignmustmeettheapplicablesafetyrequirements,andapplytothephysicalproperties
ofthecompleteinstallation.
Relatedtopics
SimradSU90,page7
Systemunits,page13
Transducerdescription
Thecylindricaltransducerallowsthesonarbeamtoprovideafull360degreescoverageof
thewatervolume.
Thetransducerconvertstheelectricenergygeneratedbythetransmittercircuitrytophysical
vibrations.Thesevibrationsalterthewaterpressure,andcreateanacousticpulsethatis
sentintothewater.Theacousticsignalistransmittedasabeam.Thedurationofthe
acousticpulse,aswellasitsfrequencyandshape,arecontrolledbythesystemsoftware.
Thedirectionandopeningangleofthebeamiscontrolledbythetransmittercircuitryand
thephysicalpropertiesofthetransducer.Afterthetransmission,thetransducerworksas
a"microphone".Itconvertsthewaterpressurecreatedbytheacousticechoestoelectric
energy.Theseweakechosignalsaresenttotheampliersinthereceivercircuitry.
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18396237/C
Note
Thetransduceriscoveredwithathickredorblackprotectivecoatingmadeofaspecial
plastictype.Theprotectivecoatingisavitalpartofthetransducer .Itisveryimportant
thatneitherthiscoatingnortheinternalpartsofthetransduceraredamagedduringthe
handling,installationorcleaning.Anyholesand/orscratchesinthetransducersurfacewill
allowwatertopenetratethetransducer .Ifaleakoccurs,thetransducermustbereplaced.
ALowerpartofshaftsleeve
BLowerpartoftransducershaft
CTransducerwithitsredprotectivecoating
Thetransducerismountedatthebottomendofthehullunit’s
transducershaft.Thisallowsthetransducertobeloweredinto
thewaterforoperationaluse,andretractedforprotectionwhen
theSU90systemisturnedoff.Byloweringthetransducerinto
thewater,youmayalsobeabletoreducethenoisecreatedbythe
laminarowofwateralongthehull.
Thetransducerislargeandheavy.Itcontains384individual
elements.
Rulesfortransducerhandling
Atransducermustalwaysbehandledasadelicateinstrument.Incorrectactionsmaydamage
thetransducerbeyondrepair.Aphysicalblowtothetransducerfacemayeasilydamageone
ormoreelements.Observethesetransducerhandlingrules:
•Donotactivatethetransducerwhenitisoutofthewater.
•Donothandlethetransducerroughly.Avoidimpacts.
•Donotexposethetransducertodirectsunlightorexcessiveheat.
•Donotusehigh-pressurewater,sandblasting,metaltoolsorstrongsolventstoclean
thetransducer.
•Donotdamagetheouterprotectiveskinofthetransducer.
•Donotsteponthetransducercables.
•Donotdamagethetransducercables.Avoidexposuretosharpobjects.
Relatedtopics
SimradSU90,page7
Systemunits,page13
SimradSU90Technicalspecications