B&G H5000 Analogue Expansion - Manual (Page 72)

72 | Autopilot setup | H5000 Operation Manual
Rudder gain
Rudder gain is the ratio between the commanded angle and the heading error.
Too little
rudder gain
Set Course
Too much
rudder gain
Set Course
• Too little Rudder gain and the autopilot fails to keep a steady course
• Too much Rudder gain gives unstable steering and reduces speed
• Low speed requires more rudder gain than high speed
Counter rudder
Counter Rudder is the parameter that counteracts the eff ect of the boat’s turn rate and inertia.
For a short time period it is superimposed on the proportional rudder response caused by the
heading error. It may sometimes appear as if it tends to make the rudder move to the wrong
side (counter rudder).
The best way of checking the value of the Counter Rudder setting is when making turns. The
fi gures illustrate the eff ects of various Counter Rudder settings.
Counter rudder
setting too low
= Overshoot
response
New course
Counter rudder
setting too high
= Sluggish and
creeping response
New course
Correct setting of
counter rudder,
ideal response
New course