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TMQ AP56 - SS37
Alarms
There are several alarms associated
with the autopilot system which are
a function of and controlled by the
C-drive amplifier. However the display
is the medium through which these
alarms are heard and displayed.
Off Course
In AUTO mode the off course will
activate when the boat is more than
45º off the required course.
• Audible alarm will sound
•
AUTO LED will flash
When the boat heading comes back
within 45º of the course heading the
alarm will deactivate.
No GPS Data
This alarm is activated when the
autopilot is not receiving valid
information while in GPS mode. This
could be caused by:
• Incorrect wiring of the GPS to the
C-Drive unit.
• Incorrect data output (wrong
sentence) from the GPS unit.
• No route set up or selected in the
GPS unit
•
No location fix at the GPS unit.
The course over ground information
generated by the GPS unit should
closely correspond to the magnetic
heading signal the AP56 is receiving
from its magnetic compass. The
greater the difference between these
headings, the less accurate will be
the GPS Mode steering.
Two areas which should be
carefully checked are:
•
Ensure the GPS unit has the
correct magnetic correction factor
•
Ensure that the AP56 compass is
correctly installed, aligned, and not
subject to magnetic interference.
When the pilot is in waypoint steering
mode (AUTO / GPS) and the No GPS
data alarm is activated:
• Audible alarm will sound
•
AUTO LED will flash
•
GPS LED will flash
• Press AUTO to stop the alarm and
revert to normal autopilot steering
No MCU
This alarm is activated when the
display unit does not receive
communication data from the C-Drive
assembly.
• Audible alarm will sound rapidly
• Display will scroll
n r d
across the
screen
• Check that all plugs are secure and
the interconnecting cable is not
damaged.
