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The alarm system | AP70/AP80 Installation Manual
Alarm/Warning Type Warning/Alarm condition Possible cause and recommended action
Drive overload
W
AC70: Motor/sol current
> 30 A
SD80: Sol current >8 A
Reversible motor
Motor stalls or is overloaded
4. Fix possible mechanical blocking of rudder.
5. If heavy sea at high rudder angle, try to reduce boat speed
or rudder angle by steering at another heading
6. Make sure there is no shortage to ground or cabling dam-
age, disconnect cable from AC70 to motor, and make sure
there is no alarm when trying to run NFU-mode
Solenoids
Shortage to ground or cabling damage. Same action as for
motor
A
AC70: Mot/sol current >
55 A
SD80: Sol current > 9 A
Steering compass
missing
A Lost sensor data
No data from the selected steering compass. If no monitor
(back up) compass; the autopilot goes to STBY mode. If
Monitor compass; the autopilot switches to monitor compass.
If there is a difference the autopilot will gradually synchronize
with the new heading (2 minutes).
Thruster inhibited W Vessel speed > set limit
The vessel speed exceed the set limit for when thrusters can
be used.
¼ Note: The Thruster inhibit limit will only apply when speed
source is Log or SOG, not if the speed is set manually.
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