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5. MAINTENANCE, TROUBLESHOOTING
5-6
5.3.8 Rudder test
The rudder test checks drive type, presence or absence of bypass/clutch circuit, rud-
der deadband, rudder speed, rudder duty*, and rudder angle.
* The rudder control value required to obtain rudder speed of 5°/sec. For solenoid sys-
tems, ship’s characteristics=sailboat, the indication is 100% always. For ship’s char-
acteristics=sailboat, the message "Rudder speed is too slow to control the vessel. The
vessel may not be controlled properly." does not appear when the rudder speed is
greater than 5°/sec; however, this is not a sign of malfunction.
When the rudder reference unit is installed
Open the diagnostic test options window, select [RUDDER TEST] then push the
Course control knob. You are asked to center the rudder. Center the rudder then
push the Course control knob to start the test.
For Fantum Feedback
Note 1: For Fantum Feedback
TM
, the rudder test does not check presence or absence
of bypass/clutch circuit, the rudder deadband, and rudder angle.
Note 2: For Fantum Feedback
TM
, this rudder test is the different from it at installation
in the following points.
• The adjustment of the rudder speed is not available.
• The result calculated by the rudder test is not reflected to the control of the NAVpilot.
1. Select [RUDDER TEST] in the [DIAGNOSTIC] menu then push the Course con-
trol knob.
2. Center the rudder then push the Course control knob.
3. Turn the helm or press the W (or X) key hard-over to PORT/STBD then push the
knob.
4. Long press the W (or X) key hard-over to the opposite direction from step 3.
RUDDER SETUP AND AUTO TEST
DRIVE TYPE: REVERSIBLE 12V
BYPASS/CLUTCH: NOT PRESENT
DB : 0.5
° SPD: 5.2 °/S
RUDDER DUTY: 100%
20 10 5 5 10 20
The result display
㪫㪤
USE WHEEL TO
CENTER RUDDER BEFORE
RUDDER TEST.
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