Operating manual ALPHASEAPILOT MFC Issue 1.1 Page 13 of 84
ALPHASEAPILOT MFC
1.10 Programmable Automatic Radius of Turn (
Section 2.6 & 2.34
)
The Autopilot Turn Radius Control function can operate in both the Adaptive and non Adaptive
Modes but it is essential to note that Speed over the Ground (SOG) input data must be present
– without which Radius control will not exist.
To select Radius of Turn Control vs Rate of Turn:-
(i) Use the “CONTROLS” key to select the Controls Menu.
(ii) Use the “CONTROLS” key again to step through the Menu listing until the “TURN
TYPE” box is flashing.
(iii) Use the rotary (+/-) illumination control to select “RAD”.
To select required Radius of Turn (0.1 - 9.9Nm):-
(iv) Use the “LIMITS” key to display the Limits Menu.
(v) Use the “LIMITS” key again to step through the Menu listing until the “RAD:nm”
box is flashing.
(vi) Use the rotary (+/-) illumination control to select the required Radius of Turn
between the limits 0.1–9.9Nm.
1.11 Adjusting Overshoot and Undershoot (
Section 2.4 & 2.24
)
This performance aspect is based on Counter Rudder Control settings and, if operating in the
full Adaptive mode, is unlikely to require manual adjustment.
If manual adjustment is required (more likely in the non Adaptive PID mode) the “COUNTER”
Rudder value is changed as follows:-
(i) Use the “CONTROLS” key to display the controls menu.
(ii) Use the “CONTROLS” key again to select “COUNTR” and increase or decrease
the value (1-9) using the rotary (+/-) illum. key based on the following:-
To adjust overshoot (vessel goes past new heading) or undershoot (vessel stops short of new
heading) when altering course using the Autopilot: -
If vessel overshoots - increase COUNTER RUDDER value
If vessel undershoots - reduce COUNTER RUDDER value
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