OPERATING MODE INDICATION
The operating mode of the
4000 is indicated by a flashing LED as
follows:-
OPERATING MODE
LED FLASHING CODE
STANDBY
Provides power steering.
AUTO
Autopilot steers to maintain compass
heading.
Autopilot steers to maintain apparent
wind angle.
mode is also
confirmed by a single beep tone
I
emitted every 30 seconds.
n
ON
OFF SECONDS’
Hand Held Control Unit
An optional hand held control unit can be
plugged into the control unit to provide
(Cat. No. 2076)
full course change capability from
anywhere on board. The unit duplicates
the main control units four course change
keys and may be used in both
Standby
and
Auto
modes. The operation of the
main control unit is unchanged when the
hand held control unit is connected.
This interface may be used with any radio
Radio Navigation Interface
navigation system that outputs cross track
error to either the NMEA
or
(Cat. No. 2075 NMEA format)
0183 standard. It supervises the
4000 to maintain the
preselected track set on the radio
navigation system. Full operating
are supplied with each interface.
Your main distributor or Nautech’s
Product
will be able
to advise you of Radio Navigation Systems
with suitable autopilot output.
FUNCTIONAL TEST PROCEDURE
After completing the installation you
should carry out the following functional
test to familiarise yourself with the system
before attempting sea trials.
Plug the
4000 into the power
socket and switch on the electrical supply.
The unit will emit a short beep tone to
indicate that it is active and the LED will
flash to indicate
Stand by
operating
Engage the drive by rotating the clutch
ever fully clockwise. Press and hold the
+
key. The wheel should move to
produce a turn to starboard. The unit will
emit a short beep tone on each
to confirm valid entries. Should the wheel
move to produce a turn to port the
changeover switch is incorrectly set and
must be adjusted as described on page 8.
Press
Auto
to place the autopilot under
compass control. The LED will be lit
constantly to indicate that the unit is in
Auto
mode. If the yacht is swinging about
its mooring, you will see that small
variations in heading cause the unit to
apply corrective action to the rudder. Press
Stand by
to return the unit to
Stand by
mode.
.
Rudder Control Adjustment
Before attempting sea trials the rudder
control must first be adjusted to suit the
wheel reduction ratio of your particular
vessel. The rudder control setting
recommended for initial sea trials may be
obtained from the following chart.
The setting recommendations above
will provide stable control for initial sea
trials and may, if necessary, be fine tuned
later (see page 19).
14
15
Summary of Contents for Autohelm 4000
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