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Set up of the Autopilot
Initial Operation
Before going through this
chapter, you should be familiar
with "Display Configuration" on
pages 26 .. 28
viewing the configuration!
Rudder Angle
LED visible!
1. Select Autopilot Configuration "-AP-"
on any Autopilot Display (di=01) or on a Com-
pass-Autopilot Display (di=02).
2. Select A0:00 (use left or right button).
3. Move rudder manually into center posi-
tion and rotate the sensor shaft manually
through 360 degrees, until the rudder LED
stands at 6 o'clock. Note: there might be a sec-
ond shaft position with the LED in the middle,
but the LED would not move gradually, when
turning the shaft. Use only the "good" shaft po-
sition where the LED can be moved gradually.
Then lock the sensor shaft to the rudder with its
fixation screw.
4. Rudder sense: (Select A0:00) Move rud-
der manually to the left (like for a left turn!) and
observe rudder LED also moving left. In case
the LED moves the opposite way, set A0:01.
Take a note of the correct setting. Remark: one
LED corresponds to two degrees rudder angle.
5. Attention: the rudder will move under
power during the following step! Be pre-
ÿ ÿ ÿ ÿ
pared to press the "OFF"-button imme-
diately if the rudder moves towards ei-
ther end. Exit the setup mode and press the
HDG button on the autopilot display and modify
the selected heading by 2 degrees, or if you have
a SERVO steering wheel with an OFF button ,
rotate it to the middle and press SERVO.
If the rudder moves to either end, press the
"OFF" button immediately and switch off the
power to the DRIVEBOX.
In case of a reversible drive motor or in case
of Servo Valves, reverse the leads at terminals
7 and 8 of the DRIVEBOX; for a continuous
running pump and a proportional valve, reverse
the leads for the valve at terminals 2 and 4 of
The DRIVEBOX
must be powered and
connected to the bus.
Make sure there is
no second Drivebox
or a FADEC-Box
connected to the bus
at the same time when
the DRIVEBOX. For Danfoss-Valves modify
A4* (0 or 1). Switch on power (again) and re-
peat step 5.
6. Adjusting the rudder travel limits: Put
your rudder amidships, then engage the auto-
pilot in heading mode. Modify the selected head-
ing by 12 degrees right or left (or apply full de-
flection on the Servo Wheel in "SERVO" mode,
if there is one installed).
If the rudder reaches the mechanical stop,
reduce A6 to a lower value. If however the rud-
der does not come near the stops, increase A6
if necessary up to its maximum value of A6=28.
Usually there is a slight difference between
the left and right side. The rudder sensor mid
position should be adjusted mechanically so
as to have the boat running straight with the
SERVO wheel centered. It can also be adjust-
ed w ithin small limits by modifying A_.
Autopilot Setup
1. Select "Configuration Mode" on your Autopi-
lot Display (see page 26).
2. Scroll to "-AP-" (see page 27), then verify A0
to A- and A0* to A5*. Write down,
when you have altered the data, for
an eventual data loss in the auto-
pilot Drive-Box.
A0:00
(00 or 01) Rotation sense of the
rudder angle sensor. See "initial op-
eration".
A1:00
(00 or 01) Number of the Autopilot
Drive-Box. In case of two Drive-
Boxes, two different numbers
must be assigned. With Danfoss
proportional valves, the idle signal
can be adjusted with A1 by 1%.
A2:02
(00...03) Rate of heading adjust-
ment in case of wind shift (only for
true wind mode) 00 = slow, 03 =
fast.
A3:01
(00...01) automatic heading dead
band (00=OFF, 01=ON). The
width of the dead band is deter-
mined automatically from actual
boat movement under present
sea conditions. The dead band
leads to less frequent rudder mo-
tion with only slightly less accu-
rate steering, which is desirable
for power saving on yachts.
22
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