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442703/B

261

MotorControlUnitfamiliarization

ThepurposeoftheMotorControlUnitistocontrolthehoistingmotoronthehullunit.

WhenyoumaketheappropriatecommandsontheST90sonar,theMotorControlUnit

willstartandstopthemotor.Itwillalsomakesurethatthemotorrotatesthecorrectway.

•A:Internal24Vdcpower

supply

•B:Ethernetconnector

•C:Handcrank

•D:Mainslter

•E:HullUnitController

circuitboard

•F301:Fuseforinternal

powersupply

•E301:TerminalstripforAC

mainsinput

•K301:Hoistingcontactor

•K302:Loweringcontactor

•K303:Phasewatchrelay

•L1:Yellowindicatorlight

•L2:Greenindicatorlight

•S301:Motorprotecting

switch

•S302:Hoist/lowerswitch

•S303:Handcrankwith

safetyswitch

•P302:Connectorforhullunitlimitswitchesandrotationsensor

Duringnormaloperationalconditions,theL1andL2indicatorLEDsarelit.

•LEDL1indicatesthatthePhaseWatchRelayK303isactivated.Thismeanthatthe

3-phasevoltageisapplied,andthatthethreephasesarecorrectlyconnectedwith

regardtotherotationdirectionofthehoistingmotor.

•LEDL2indicatesthattheinternal+24VDCpowersupplyforthecontrolelectronic

isoperational.

Settingtowork

Simrad ST90 Installation Manual

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