Rudder Feedback Calibration; Rudder Test - Kongsberg Simrad AP11 Instruction Manual

Robertson AP11 Autopilot
Note !
72

Rudder feedback calibration

The display will read RUD MAX >. This function enables
you to compensate for any non-linearity in the mechanical
transmission between rudder and rudder feedback unit.
Press MODE to activate the rudder calibration procedure.
The display will start flashing. Turn the wheel hardover to
stbd. (as indicated by the arrow) until the rudder stops at
maximum starboard rudder.
Rudder
The value shown on the display (example) is the rudder
angle as read by the rudder feedback unit before any
adjustment is made. The bargraph indicates the direction of
the feedback signal. If the displayed angle is different from
actual angle, set correct rudder angle by pressing < or >.
Then push MODE to store the value.
If the rudder feedback is not mounted according to
instructions on page 44 or mounted upside down, the
bargraph will show opposite rudder angle. Adjust as
explained above until the bargraph is shown on correct
side and the correct angle is displayed.
Proceed to next menu item which is calibration of PORT
rudder by pressing >.
Repeat the above procedure with the rudder hard over to
Port. (This time you need not correct for wrong side of
bargraph readout). After having completed the rudder
feedback calibration rudder zero may still be wrong but will
be adjusted later during Sea Trial.
Push > to proceed to next menu item.

Rudder Test

The display will read RUD TEST. The rudder test will
determine the direction of the rudder commands and adjust
the rudder speed if a reversible drive unit is installed. If the
system is connected to a solenoid operated steering gear the
direction of rudder commands will be set and the adaptive
rudder loop will compensate for rudder overshoot.
Rudder angle bargraph
Direction to turn wheel
20220513E