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Possible
Thruster malfunction.
consequences:
Corrective
Check the SVC (Kongsberg Vessel Control) Operator Station for details.
actions:
Thruster/rudder [#] triangle pot error
Description:
This message is reported because the input from the triangular "sine-cosine" pot.
meter indicates an error.
The reason for this is failure in the thruster feedback equipment or the input
interface.
Possible
If the feedback loop is faulty the performance will be nearly unaffected. If the
consequences:
control loop is faulty unexpected movements may be the result. The system may
use estimated feedback instead of measured feedback depending on configuration.
Corrective
If control seems to be degraded the thruster should be switched off. Check the
actions:
input interface and the thruster feedback equipment.
Thruster/rudder in azimuth limits
Description:
This message is reported if the azimuth or rudder angle is limited in Autopilot and
other high speed modes.
The method of detection is comparing the setpoint with the operator-specified
maximum Turn-angle for Steering Rudders/Azimuth Thrusters.
The reason for this fault may be that a low Surge demand results in a low
available moment.
Additional
Steering group name, (if two or more steering groups exist).
information:
Possible
Degraded performance.
consequences:
Corrective
Increase the Surge demand. Check the actual heading and heading setpoint, and
actions:
check the operator-specified maximum Turn-angle for Steering Rudders/Azimuth
Thrusters.
Use another operational mode e.g. Joystick - Increase Surge demand or increase
the maximum Turn-angle for Steering Rudders/Azimuth Thrusters.
Thrusters not ready
Description:
No thrusters/propellers ready for DP.
The reason for this fault may be that no thrusters or propellers are running. If the
vessel has a switch or button to select between manual and DP thruster control,
this switch/button may be set to manual. The ready state from thruster or
propeller system is not active. There may be errors in thruster or propeller
electronic, digital input interface or cabling.
The method of detection is digital input (stand-alone systems).
Possible
Cannot perform any DP function.
consequences:
385585/C
Message explanations
A-79
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