Seiwa SW AP03 - Manual (Page 16)

Turn the helm to starboard until it reaches the mechanical stop. The last line of the screen
shows the helm angle. If it reads PORT instead of starboard, this will be corrected
automatically when you press the right arrow key. Now press the right arrow key. Note that
if the helm angle is less than 10 degrees at the stop, the system will not respond. After
pressing the right arrow, the port limit prompt appears. Now turn the helm to port until it
reaches the mechanical stop. At this stage, the helm direction will read correctly. Press the
left arrow and the final prompt appears:
29 LIMITS 28
CENTRE HELM
PRESS >
02 S
The top line shows the stored values of the port and starboard rudder limits. Check that
these are close to what you expect and are balanced within 5 degrees. Bring the helm to
the position which your experience shows to be centred - the indicated angle may now be
different from zero. Press the right arrow.
Warning: This action will start the steering drive. Make sure that
it is safe to do so before pressing the right arrow.
Three things now happen. The current helm position is now placed in memory at the helm
centre, the helm then moves to 10 deg port, pauses and then returns to centre. This
operation corrects any small alignment errors in the rudder transducer, stores the correct
drive phasing and completes the setup operation, returning the system to STANDBY.
Note that if the helm is not centred within 5 degrees, an ‘Off Centre’ alarm will occur and the
setup will not continue. Press STANDBY and re-centre the helm by adjusting the rudder
transducer. Later, when the vessel is at cruising speed, it is recommended that the HELM
ADJUST option be used to fine-tune the helm centre. (Sec 2.5).
If a digital heading is to be used and a fluxgate compass is not connected, a ‘Compass
Fault’ alarm will now appear. Select Menu 3 (See Sect 2.5), scroll down to the compass
type option and select either the magnetic or true digital heading input.
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