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Disengage of Off Course alarm in Work mode
Sea Trial
WORK: OFFC. ALARM
OFFC. ALARM OFF?: -
In some occasions, e.g. at very low speed, it may also be wanted to disengage the Off course alarm in Work mode. This is done by pressing the DECREASE
The purpose of the sea trial is to verify that the AP45 has been properly installed and is well performing as a result of that. A successful sea trial is dependant of the following assumptions:
•The compass is placed correctly
•The compass is compensated by an authorised compass adjuster, particularly if the vessel's magnetic steering compass is used
•Rudder hardover to hardover time is appropriate
•Rudder feedback geometry is correct
•Initial settings are in accordance with “Selection of parameter settings”, page 6- 2.
•Autopilot works at the dock side.
The sea trial should take place in open waters with sufficient room for manoeuvring. It is also recommended to find a place where the sea is reasonably calm.
Note!
Do not use the PORT and STBD buttons during steps
1.Rudder Feedback centring procedure
Enter Debug mode (Press the hidden button just above the + button and then the Weather button).
Step through the Debug loop until you find the following text:
Centre Rudder
Yes: Press Inc
Bring the vessel up to normal cruising speed.
Place the rudder in exact midposition where the vessel steers a straight line.
Press Increase button and the display will show:
Rudder Feedback
* centred *
Step back through the Debug loop until you read the rudder angle, and verify that this now indicates zero.
2.Refer to the Operation section and set WEATHER to OFF and RUDDER to 1.0. Press the WORK button and disengage the autotrim function as described in “Disengage of
3.Maintain cruising speed and keep a straight course on different headings. Refer to “RUDDER”, page
Simrad Robertson AS
Egersund - Norway
