Specifications
Chapter 5: Customising the System
43
AutoTrim
The AutoTrim level setting determines the rate at which the autopilot
applies standing helm to correct for trim changes caused by varying
wind loads on the sails or superstructure. The settings are:
Setting Effect Recommended for:
Off No trim correction
1 Slow trim correction Heavy displacement vessels,
with full keel or transom
rudder.
2 Medium trim correction Heavy displacement vessels.
3 Fast trim correction Moderate to light
displacement vessels.
4 Super fast correction Planing power vessels
Defaults: Displacement 2
Semi displacement 3
Planing 3
Sterndrive 3
The default setting (Level 3) should provide optimum performance
with the ST6000 Plus autopilot. However, depending on the vessels
dynamic stability, an incorrect rate of trim application may result in
poor course keeping due to autopilot instability.
After gaining experience with the ST6000 Plus, you may wish to
change the setting. The effect of the setting must be evaluated while
under sail.
Decrease the AutoTrim level if the autopilot gives unstable course
keeping or excessive drive activity with a change in the heel angle.
Increase the AutoTrim level if the autopilot reacts slowly to a
heading change due to a change in the heel angle.
For systems without a rudder reference unit, these settings have no
effect and trim is set to level 3.
Power steer
Power steer selects the Joystick mode of operation: Proportional or
Bang-Bang.