Kongsberg cJoy OT, Руководство оператора

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Kongsberg cJoy OT
For the azimuth thrusters, you can choose between various thruster allocation modes.
The currently-selected thruster allocation mode is shown in the
Thruster Alloc
field of
the General Setup input dialog.
Depending on the operational mode, illegal thruster allocation modes are unavailable in
the General Setup input dialog.
Typical examples of azimuth thruster allocation modes are:
•
Variable
The system automatically changes the angle of the azimuth thrusters so that the
thrust is always angled in the optimum direction. In order to reduce wear and tear
on the azimuth thrusters due to continuous changes in the azimuth thruster angles, a
dead-band function is incorporated.
Use this thruster allocation mode when the environmental forces acting on the vessel
are large and are not constantly changing direction.
A set of forbidden zones for each thruster can be predefined to prevent a particular
thruster from interfering with other thrusters, the hull or other equipment. What
happens to the thrust, when a thruster passes a forbidden zone, can be predefined for
each zone (for example, the thrust can be reduced).
•
Fix
The system automatically selects a fixed angle for each azimuth thruster. When the
environmental force is small and constantly changing direction, this mode can be used
in order to avoid continuous changes in the azimuth thruster angle.
If you disable and then re-enable a thruster that is running in this mode with a negative
pitch or rpm, the system will automatically turn the thruster 180 degrees.
•
Steering
Azimuth thrusters not used for steering will have predefined fixed angles for use in
the optional
Autopilot mode. This thruster allocation mode is automatically selected
when the system is in Autopilot mode.
Additional information
The configuration and operational requirements of the vessel determines the thruster
allocation modes that are implemented in the system, as well as the criteria for automatic
mode changes. Details of the available thruster allocation modes are provided with the
configuration information for each vessel.
For some of the thruster allocation modes such as
Fix
a sufficient number of thrusters
must be enabled to select the mode. The system will automatically change back to the
default thruster allocation mode (normally
Variable
mode), if you de-select thrusters or
thrusters lose their
Ready
status.
Setting the minimum RPM
If a thruster can be controlled in combinator mode, a minimum RPM can be set for the
thruster when
Sequential
or
Stepwise Combinator Mode
is selected.
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