ComNav 2001 Autopilot System
P/N 29010017 V1.0 - 55-
WINDVANE INTERFACE
INSTRUMENTS WITH AN NMEA 0183 WIND OUTPUT
The autopilot must have 02.06 (01.15) software to
accept NMEA 0183 wind data.
The output from the wind vane must be
connected to NAV PORT 2.
Dip Switch #1 must be set to the ON or CLOSED
position.
With the autopilot master select switch in the
STANDBY position, press and hold the WIND
ON key and press either the up or down
ARROW key if necessary to set the wind offset
to 0 degrees. If the tack indicator on the autopilot
display indicates Port Tack when
it should indicate Stbd Tack, or vice versa,
reverse the setting of Dip Switch #2 from its
current setting.
If the autopilot does not receive any wind
information it will alarm and display 'Wd.Er'.
You may need to reverse the Signal and Return
leads in the autopilot distribution box. The
autopilot can accept either the VWT (True Wind
Angle) or VWR (Relative Wind Angle). The
VWR sentence has higher priority than the VWT
sentence as sailing by the apparent wind reduces
the amount of sail trimming necessary.
BROOKES AND GATEHOUSE
The windvane interface circuit in the autopilot is
compatible with both the older potentiometer type
masthead units, as well as the newer solid state
masthead units from Brookes and Gatehouse.
The S1, S2 and S3 wires from the autopilot
should be hooked in parallel with the RED,
GREEN and BLUE wires from the masthead
unit. The other wires in the cable from the
autopilot are not used, and should be cut off to
avoid the possibility of short circuits. Turn
on the wind instrument, place the autopilot master
select switch in the STANDBY position, and
press the WIND ON/SET key.
If the reading on the autopilot display is
increasing when the actual wind angle is
decreasing, reverse any two of the wires from the
autopilot. Press and hold the WIND ON/SET
key and press either the up or down ARROW
key until the reading on the autopilot display is
the same as the actual wind angle.
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