Robertson AP45 Autopilot
Installation
Simrad Robertson AS
Egersund - Norway
Page 5-5
The course detector is
mounted on the ship's
magnetic compass to
transmit a heading
signal to the control
unit. The mounting
method will depend
upon the compass
design. The distance
between the course
detector and the
compass card depends
upon the magnetic
momentum of the
compass card
magnets. A distance
of 70-90 mm for a
magnetic moment of
1500-2000 cgs is
therefore
recommended. For
adjustment of signal
level, see “Course
Detector Alignment”
page 6-2. If a non-
Robertson supplied
magnetic compass is
used, it is advisable to consult a qualified compass adjuster for mounting of the
CD109.
For mounting instructions refer to Fig. 5-5. The course detector can be attached to
the compass either by a 6 mm screw to the bottom of the compass bowl or by use of
the tri-pod holder supplied with the course detector.
The course detector is also supplied with cable (1m) feed and plug. Socket and
connector with bracket for extension cable are in the standard scope of supply. The
extension cable is optional equipment.
The compass should be checked for free movement in the gimbals without
stressing the detector cable.
The CD109 Course Detector is connected to J2 on the Control Unit, and the
connection is shown on the Wiring Diagram (Fig. 5-23).
If the Course Detector is mounted up-side down on top of the compass, the
sine/cosine signal on J2 pin 10 and 11 must be interchanged.
Fig. 5-5
CD109 Course detector - Mounting
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