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Simrad AP26 and AP27 Autopilots
90 20221586B
Rudder Test
Note ! If the boat uses power assisted steering, it is important that the
engine or electric motor used to enable the power assist steering
be turned on prior to this test.
Bring the rudder manually to midship position before starting the
test.
Caution ! Stand CLEAR of the wheel and do not attempt to take manual
control of the wheel during this test!
Activate the automatic rudder
test by turning the course knob
clockwise.
The autopilot will after a few
seconds issue a series of PORT
and STBD rudder commands
and automatically verify correct
rudder direction. It detects
minimum power to drive the
rudder, and reduces the rudder
speed if it exceeds the
maximum acceptable speed
(8°/sec.) for autopilot operation.
The Rudder test is verified by
the display showing ‘Motor
OK’, ‘Solenoids OK’, or
‘Failed’. If ‘Failed’ is given,
check for correct electrical
connection.
The Motor Drive out (displayed in percentage) is the amount of
maximum available power needed to achieve correct rudder
speed on automatic steering (Maximum speed is used in NFU
mode).
The screen also tells whether a clutch is installed or not.
If the Automatic rudder test fails, refer to ”Alarms” beginning on
page 118.