ComNav 2001 - Page 33

ComNav 2001 Autopilot System
P/N 29010017 V1.0 - 33-
DOCKSIDE SET-UP
ADJUST RUDDER ANGLE INDICATOR (if installed)
1) Turn MASTER SELECT switch to
STBY mode. Turn the wheel by hand.
See if the rudder angle indicators show
the correct direction of turn. If not
TURN PILOT OFF. Reverse the RAI
SIG and RAI RET wires at the
distribution box.
2) Turn the wheel hard over. Turn the RAI
ADJUST so that the indicators show
hard over correctly.
CORRECT RUDDER DIRECTION
To check that the autopilot will move the rudder in the correct direction:
1. Centre the wheel.
IMPORTANT
2. Turn the MASTER SELECT SWITCH
to POWER STEER.
3. Press the red (port) and green (stbd) keys
alternately. Check that the rudder moves
in the correct direction each time.
4. If the rudder does not move in the correct
direction, reverse the PORT OUT and
STARBOARD OUT wires in the
distribution box.
TUNING THE AUTOPILOT FOR YOUR STEERING SYSTEM
To allow for time delays or coasting effects in the steering system, it may be necessary to adjust the PREDICATOR
MAGNITUDE and the DEAD BAND. To do this, perform the following steps:
1. Turn the MASTER SELECT SWITCH
to PILOT.
2. Set the adjustment screws to the positions
below (as shown in figure 6):
• Predictor magnitude: 1/3 turn
from fully clockwise.
• Dead band: turn fully counter
clockwise.
3. Centre the rudder.
4. Set RUDDER and COUNTER
RUDDER CONTROLS to zero.
6. Press the green DODGE key for several
seconds and release it. The rudder will
turn to starboard and then return to its
original position.
7. If the port (red) key blinks several times as
the rudder returns to its original
position, the PREDICTOR
MAGNITUDE adjust is set too
high. Turn it counter-clockwise a 1/4
turn.