PILOTSTAR D
Autopilot
1--11
Edition: March 13, 2009
3060.DOC012
1.4
Heading and Sensor Monitoring
The autopilot is equipped with an extensive monitoring electronics. In case of trouble,
audible and visual alarm will be released.
The availability of the heading sensors or the function of the steering gear, etc., is contin-
uously monitored.
As soon as the adjusted safety threshold, e.g.
OFF C
OU
RS
E (OFF heading) monitoring
limit, has been exceeded, an alarm is released on the operator unit. A plain text faded
into the text line indicates the cause; an immediate measure can be initiated.
The malfunction indication is treated with highest priority, i.e. a plain text already indi-
cated in the info line will be overwritten.
Error states -- as long as not eliminated -- are stored by the monitoring electronics and
treated as errors that are to be acknowledged (
Alarm LED
alight).
In case a serious error occurs, such as failure of the heading sensor (GYRO FAIL or
MAG FAIL), the last heading is stored, the set heading is caused to follow up corre-
spondingly. This monitoring function prevents an uncontrolled ship’s motion; the user
has the time for changing over to an alternative heading sensor (e.g. magnetic compass)
or to manual control.
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