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Robertson AP9 Mk3 Autopilot
Tunnel Thruster (±10V analogue signal)
The tunnel thruster is primarily used to maintain a set heading at
zero or very low speed.
Operate the thruster by hand to get a "feeling" of how much power is
required to maintain the heading and make small corrections.
As explained under Dockside test, the autopilot thruster signal can be
adjusted for different MINIMUM POWER under DEADBAND.
• Enter the MIN. THRUST value experienced from the manual
• Make a course change of appr. 15° and observe how the applied
• Apply Counter Rudder and eventually adjust the RUDDER and
Store the final values as "IDEAL SAVED".
Note !
5-70
operation of the thruster (appr. 30%).
control signal operates the thruster as the vessel approach the new
heading.
DEADBAND (Thruster) parameter to stabilize the heading on the
new course. Repeat this test into different course changes to find
the optimum settings of the parameters (Also refer Dock side test).
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