Simrad SU90 - Connecting the Course Gyro; Installation Shipyard; Configuring and Testing the Interface to the Course Gyro

Interfacingperipheralequipment
Connectingthecoursegyro
Purpose
AcoursegyromustbeconnectedtotheSU90.Thecablemustbeprovidedbythe
installationshipyard.TheSU90canreadthecourseinformationfromaserialline.
Ifonlya3-phasesynchroorsteppersignalisavailable,anoptionalGyroInterfaceUnit
mustbeusedforconvertingthesesignalstoseriallineformat.
Relatedtopics
•Conguringandtestingtheinterfacetothecoursegyroonpage158
•Coursegyroonpage24
Procedure
1Connectthecoursegyroasdescribed.
→Gyrowithseriallineoutputonpage143
→Gyrowith3-phasesynchroorstepperoutputonpage143
→LR40DigitalGyroRepeateronpage143
2Testtheinterface.
→Conguringandtestingtheinterfacetothecoursegyroonpage158
Gyrowithseriallineoutput
ThecoursedataontheseriallinemustbeonastandardNMEA0183telegramformat.
Thetelegramcancontainboththespeedandthecoursedata.
Inordertoperformthephysicalconnectiontothecoursegyro,refertotheapplicable
gyrodocumentation.
Gyrowith3-phasesynchroorstepperoutput
Ifonlya3-phasesynchroorsteppersignalisavailable,anoptionalgyrointerface
unitmustbeusedtoconvertthesesignalstoseriallineformat.AnLR40DigitalGyro
Repeatermaybeusedforinterfacingthefollowingsignals:
•3-phasesynchrosignal,20to115VL-L,50/60/400Hz,gearratio1:360or1:180
•3-phasesteppersignal,20to115VL-L,gearratio1:360or1:180
LR40DigitalGyroRepeater
TheLR40DigitalGyroRepeatercanbeprovidedbyKongsbergMaritime.
ForconnectionstotheLR40DigitalGyroRepeater,refertotheLR40InstructionManual.
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