Simrad ST90 - Motor Control Unit Familiarization

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