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. 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.
* 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 test is completed a message announces the results of the test.
5.3.9 Helm sensor test
The helm sensor test checks the connection between the Accu-Drive FPS 12V/24V
helm sensor and the processor unit. (The test is not available for other types of helm
sensors.) Turn the helm to port or starboard and then in the opposite direction. If the
connection is normal, the message "HELM SENSOR TEST COMPLETED." appears.
For failure, "HELM SENSOR TEST FAILED." appears. Check that your helm sensor
is Accu-Drive FPS 12V/24V. Also, check that the helm sensor is correctly connected
to TB4.
Message Meaning
Rudder test completed. Rudder tested OK.
Rudder speed is too fast to control the vessel. The vessel
may not be controlled properly.
Rudder speed is too fast.
Deadband is too big to control the vessel. The vessel may
not be controlled properly.
Deadband is too large.
Deadband is too big rudder speed is too fast to control the
vessel. The vessel may not be controlled properly.
Deadband is too large; rud-
der speed is too fast.
Deadband is too big rudder speed is too slow to control
the vessel. The vessel may not be controlled properly.
Deadband is too large; rud-
der speed is too slow.
Rudder test failed.
RUDDER SETUP AND AUTO TEST
DRIVE TYPE: REVERSIBLE 12V
BYPASS/CLUTCH: NOT PRESENT
DB : 0.5
° SPD: 5.2/S°
RUDDER DUTY: 100%
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