Specifications

Chapter 4: Customising the System
39
The default setting (Level 3) should provide optimum performance
with the ST6000 Plus autopilot. However, depending on the vessel’s
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’.
Proportional applies rudder in proportion to Joystick movement - the
further the Joystick is held over the greater the applied rudder.
Bang-Bang applies continuous rudder drive in the direction of lever
movement. To improve control the speed of rudder movement changes
with the angle of the lever. For maximum speed push the lever
hardover. If the lever is returned to the centre position the rudder will
remain in its current position.
The settings available are as follows:
Range: 0 = Off
1 = Proportional
2 = Bang-bang
Default: Off
Drive type
The drive type controls the way which the autopilot drives the steering
system. The default setting should be retained for mechanically driven
vessels.
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