Simrad AP26 and AP27 Autopilots
82 20222147A
Recommended speed during Automatic tuning varies with the
type of boat, but should not exceed 10 knots (6-8 knots is
recommended). It should be performed in calm or moderate sea
conditions.
Note ! Automatic tuning should not be performed at planing speed or in
following seas!
The parameter values calculated during Automatic tuning
becomes the HI parameters. The LO parameters are
automatically set to 66% of the HI.
It also is recommended to perform the Automatic tuning steering
East or West, as this will yield the best balanced parameters.
Note ! After the Automatic tuning has been completed the rudder must
be controlled manually, as the autopilot has returned to STBY
mode.
WARNING ! The Automatic tuning function will take control of the boat
and perform a number of S-turns. It must always be
performed in open waters at a safe distance from other
traffic. The Automatic tuning function may take from 1 to 2
minutes to complete. To stop the Automatic tuning, press
the STBY button.
Activate the Automatic
tuning, by rotating the course
knob clockwise. The display
will flash “Automatic tuning”.
After an Automatic tuning, there should be no need for further
adjustments. “Fine tuning” of these parameters are made by the
response control (see page 46). However, viewing or changing
the parameters can be made from within the Parameters menu
item
. See also “Recall Autotune” on page 86.
Proceed to the next menu item by pressing the STBD button, or
return to Standby m
ode by pressing the STBY button.
Transition Speed
The transition speed is the speed where the autopilot will
automatically change the steering parameter set from HI to LO
parameters, or vice versa (page 22).
The default setting of transition speed is 5 kts.
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