Robertson AP21 and AP22 Autopilots
92 20220596E
Proceed to next menu item by pressing STBD [>] button.
Rudder test
Motor ---
Clutch/Bypass
--- ---------
Automatic Rudder Test
Note ! Bring the rudder manually to midship position before starting the test.
It is important also that if the boat uses power assisted steering, that
the engine or electric motor used to enable the power assist steering be
turned on prior to this test. 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.
P
S
12
Testing
rudder
The autopilot will after a couple of seconds issue a series of
PORT and STBD rudder commands and automatically verify
correct motor direction, and reduce the rudder speed if it
exceeds the maximum acceptable speed for autopilot operation.
When test is finished the display will read:
PS
00
Motor OK
Rudder test
Motor 100%
Clutch/Bypass
NOT Installed
If the drive unit has a clutch or bypass, “NOT” will be excluded.
Test of LF3000/LFI3000 Mk2 feedback
1. Align engines to centre position; “zero rudder”.
2. Rev engines to 3-4000 rev/min and observe the rudder angle
indicator on the autopilot, a 2° change in the reading should be
accepted.
3.
If the rudder angle exceeds 2°, connect the screen on the TB1 cable
to the centre block terminal and repeat item 2 (See Figure 4-29). If
this gives a better result keep the screen connected.
Proceed to next menu item by pressing STBD [>] button.