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Page 6-4 Robertson AP45 Autopilot
Start-Up procedure / Commissioning
Simrad Robertson AS
Egersund - Norway
AP45 has been set up for magnetic compass from factory (Default setting). If
connected to a fluxgate or a gyro compass - or a combination of magnetic and gyro
compass, the actual compass to be used as heading reference must be selected by
means of the + or - button. The compass selection will appear in following order
when pressing + button:
MAGNETIC COMPASS
FLUX, GYRO: +/-
FLUXGATE COMPASS
GYRO, MAGN: +/-
1 : 1 SYNCHRO
MAGN / FLUX: +/-
GEARED / STEPPER
MAGN, FLUX: +/-
FLUXGATE COMPASS
OFFSET BY: 00
GYRO ADJUST
PRESS +/-
When Fluxgate Compass or Geared synchro/Stepper gyro is selected, you will get
an additional heading adjust display in the installation loop.
Fluxgate compass heading can be adjusted ±90°.
Gyro compass heading can be adjusted ±180°.
If gyrocompass has been selected, you can also turn off and on again and adjust
the autopilot as described in “Parameter setting”, page 2-3.
The range for the Off Course limit is ±5 to ±32 degrees in one degree step from set
course. Alarm is given if the difference between set course and compass heading
exceeds the limit. See “Fault warnings”, page 7-1.
Adjust for appropriate limit by means of the + or - buttons.
Specification of vessel's length determines the values for autotrim, counter rudder
time constant, turn initiate and turn rate. The values are based on experience
realising, however, that not only the length contributes to the steering
characteristics of a vessel. In some occasions, a selected length bigger or smaller
than the one of a particular vessel, may give a better result.
By means of the + or - button, the following lengths can be selected: Below 50 ft,
40-70 ft, 60-100 ft, 90-130 ft and above 120 ft.
Type of Heading
Sensor
Off Course limit
I I I I I I I I
OFFC.LIM.: 15°
Vessel's length
I I I I I I I
LENGTH: 40-70FT.