TMQ AP4 Autopilot (AP4S10) 45 of 62 Version 4.96 9/10/2017
Additional Trials
When basic trials have been satisfactorily completed, further trials can then be
carried out on individual ancillary equipment where fitted, eg: hand remote,
steering levers, GPS inputs, waypoint steering, etc.
Check the operational sections of this manual for relevant functionality testing.
Always use open waterways for testing until you are familiar with the
operation.
Rudder Limits Setting
Note: the rudder limits are factory set to 30 degrees. If the rudder feedback has
been installed correctly, the p-l and s-l symbols should display when the
rudder is moved to the port or starboard limit.
The rudder limits prevent the steering motor driving the rudder beyond its
physical (mechanical) stops. The limits are set so that the limit display indicates
before the rudder reaches the stops.
There are two display symbols P_L (port limit), S_L (starboard limit)
indicating the state of the rudder limit circuits:
The port limit P_L display will come on when the rudder position is further to
port than the limit set by the rudder limit port setting. This will cause any port
drive command to be ignored and turn off the port drive light on the front panel.
The starboard limit S_L functions in the same way for rudder angles to
starboard.
The display symbols do not appear when AP4 is in the SET mode.
To Set Rudder Limits Manually
Switch AP4 to SET mode
Hold down GPS button
Press TIMER button - display shows 900
Rotate COURSE knob until display reads 905
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