Raymarine E70098 - Rudder Damping Levels and Deadband Angles

12.3Rudderdampinglevelsanddeadbandangles
Forautopilotsystemswhichincludearudderanglereferencesensor/transducer,rudderdamping
isusedtopreventEvolutionautopilotsystemover-activity
,characterizedby“hunting”maneuvers.
Anumberofrudderdampinglevelsareavailabletoaddressthisbehaviour.Rudderdamping
levelsrelateto“deadbandangles”,andcanbeconfiguredusingyourautopilotcontrolhead(e.g.
p70s/p70RsorMFD).Ahigherdampinglevelisintendedtoeliminatepilotandhelmover-activity.
Typically,theappropriaterudderdampinglevelisthelowestacceptablevalue.However,itis
importanttobeawarethattherudderdampingscalinghasbeenchangedinrecentversionsofACU
units,whichincludenewerprocessorandsoftwareversions(theseunitscanbeidentifiedwithan
“A”appendedtotheirSKU).
Important:Therudderdampinglevelscanhaveasignificantimpactonyourautopilotperformance .
Ifyouareunsureastohowtoadjustthesesettingstobestsuityourautopilotsystem,pleaserefer
toyourdealerorRaymarineproductsupport.
Thefollowingtableliststherudderdampinglevelsanddeadbandanglesthatareavailablewith
botholdandnewversionsoftheA CUsoftware:
RudderdampinglevelExistingDeadbandangle
NewDeadbandangle
(A
CUsoftwareversion
v3.11onwards)
ACU-100,150,200,
400
ACU-300
1
0.1°0.15°0.1°
20.2°0.30°0.2°
30.3°0.45°0.3°
4
0.4°0.60°0.4°
5
0.5°0.75°0.7°
60.6°0.9°0.9°
7
0.7°1.05°1.1°
80.8°1.20°1.6°
90.9°1.35°2.2°
It’ simportanttochecktherudderdampinglevelcurrentlyconfiguredonyourautopilotcontrol
head,toensureitmatchesyourneeds.Therudderdampingvalueshouldbeincreasedonelevel
atatimeuntiltheautopilotstopshunting.Y oucanadjusttherudderdampinglevelsusingyour
pilotcontrolheadasfollows:
•p70/p70s/p70R/p70Rs— Menu>Set-up>AutopilotCalibration>DriveSettings>Rudder
Damping.
•LightHouse2MFD—FromthePilotSet-uppage: PilotSettings>DriveSettings>Rudder
Damping
•LightHouse3MFD— Homescreen>Settings>Autopilot>Pilotcontrol>Advancedsettings
>RudderDamping.
S ystemchecksandtroubleshooting
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