Cetrek PROPILOT 700, Installation And Servicing Manual

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PROPILOT 700 INSTALLATION & SERVICING MANUAL
807-007-5-96
C O N F
d i S P
S d i S
P L A N
Configuring Your Autopilot
r L
r d
C r
Installing a Press and hold the ADJ key, on power up, until the LCD
Preset displays the Configuration message (approximately 3
Configuration seconds).
Press either the < or > key to display the current setting in
the selection window (without changing the setting). Only
one Preset can be switched ON. When you select one, the
other two are automatically turned OFF. Press the ADJ key
to re-enter the settings menu or repeatedly press either the
< or > key to select the required preset. Press the ADJ key
to re-enter the settings menu or press the AUTO or OFF
key to exit this routine and store the new setting.
THE SETTINGS EXPLAINED
Rudder Limit This sets the maximum rudder movement, either side of
amidships, obtainable under autopilot control. The Propilot
will display ‘
StOP
’ when these limits are reached. The
range is from 0 (=3º) to 9 (=30º). Set the limit so that the
rudder does not quite touch its end stops.
Rudder Some steering systems have slack in them due to wear or
Deadband system design which gives a few uncontrolled degrees of
rudder movement. To stop the autopilot trying to correct
these small movements, which it can never successfully do,
the rudder deadband setting allows a small rudder
displacement from the required position without the
autopilot trying to correct the error.
Set this to the minimum value that avoids hunting of the
rudder. The range is from 0, (0º) to 9, (2º).
Counter Rudder At the end of a large course change the amount of rudder
is reduced as the vessel approaches the new heading to
prevent the vessel from overshooting. This may even result
in opposite helm being applied for a short time. The rate at
which the reduction in the amount of rudder occurs is
known as Counter Rudder.
If this is set too high the vessel will not settle on to the new
heading quickly enough. If the Counter Rudder is set too
low the vessel will overshoot and the pilot will have to
correct accordingly, possibly causing the vessel to oscillate
from side to side, before settling to the new heading.