Simrad ST90 - Initial Safety Check of the Motor Control Unit

262
442703/B
Relatedtopics
Settingtoworksummary,page242
Startingupthehullunit,page257
Hullunitdescription,page257
Hullunitfamiliarization,page260
MotorControlUnitfamiliarization,page261
InitialsafetycheckoftheMotorControlUnit,page262
Checkingthehostingmotor’s3-phaseACconnections,page263
Connectingthe3-phaseACpowertotheMotorControlUnit,page265
Ventingthetransducershaftsleeve,page266
Checkingthe3-phaseconnectionforcorrectrotation,page268
CheckingtheoperationoftheHoistingandLoweringcontactors,page270
Checkingthetransducerloweringandhoistingfunctionality,page273
InitialsafetycheckoftheMotorControlUnit
SafetyisalwaysimportantwhenworkingontheHullUnitandtheMotorControlUnit.
Highvoltagesareused.TheinitialsettingsmustbeveriedbeforetheHullUnitcanbe
startedforthersttime.
Prerequisites
•TheST90isturnedoff.
•Thecircuitbreakerforthe3-phaseACpowerisdisengaged.
•Allcableconnectionsaremade.
Youmustbeequippedwithastandardsetoftools.Thistoolsetmustcomprise
thenormaltoolsforelectronictesting,aswellasthenecessarytoolsforrelevant
disassembly/assemblyofpartsfortestaccess.Eachtoolmustbeprovidedinvarious
sizes.Werecommendthatalltoolsaredemagnetizedtoprotectyourequipment.
Context
Highvoltagesareused.Thisequipmentmustbeservicedonlybyqualiedpersonnel
familiarwithhigh-voltageequipmentandthepotentialhazardsinvolved.Failureto
observethisprecautioncouldresultinbodilyinjury.
Procedure
1Makesurethatthe3-phaseACpowerisdisconnected,andthatthecircuitbreakers
aredisengagedintheship’sfusebox.
2UseaspannertoopenthedoorontheMotorControlUnit.
3LocatetheMotorProtectingSwitch(S301).CheckthattheswitchisinpositionOFF.
4LocateHoist/LowerSwitch(S302).CheckthattheswitchisinpositionSTOP.
SimradST90InstallationManual