43 | Operation
2.3.3 PMS
This screen displays a one-line configuration of the Power Management system with generators and thrusters.
Figure 34: PMS Screen
In the left section all the generators and thrusters are displayed in the actual bus configuration, hence this screen may
differ per project.
Each generator and each thruster must be assigned to a bus number (if no PMS functionality is required for a system
the thrusters are assigned to bus 0). On the right the capacity and bus for each generator can be set. Setting for the
thrusters must be done in the thruster settings screen.
If there are additional heavy consumers in the system this can be entered on the left also, e.g. power for fire pumps, the
system reserves the amount of power needed for this and will not use it for DP. Further on the left the operator can set
the bus limit for the DP so the bus will not be loaded in excess of this value.
The PMS functionality monitors the DP system from overloading the power system. The DP system constantly checks
the power demand from the controller to the thrusters. If for a given bus the power will exceed the bus limit, the system
reduces the power for the connected thrusters. The allocator will transfer the requested thrust to other thrusters if
possible.
On a sudden power loss (generator or bus-tie trip) the system immediately reduces the power demand to the connected
thrusters. After this the system will try to re-route the power request to other thrusters.
If the system has to reduce the power to the thrusters beyond the level that the requested power/thrust no longer
can generate, the system will reduce the thrust in such a way that heading will be kept for as long as possible. If this
happens, an indication on the screen and a REDUCE alarm will be activated.
The PMS screen can be used both in simulation mode and in normal mode. In normal mode the values and statuses
are measured and displayed. An extra option is that in the PMS screen a generator and/or a thruster can be selected/
deselected, the generator or thruster will still function but in the capability plot (Capability screen) the green line will show
the effect. Thus letting the operator study the effect of losing a generator or thruster on the capability without effecting the
system, while in DP.
Summary of Contents for Alphatron Marine AlphaDynaPos
Page 1: ...AlphaDynaPos Ship Automation and Navigation system Operation Manual www jrc am ...
Page 5: ...5 Contents 4 2 Appendix B Checklist for Taking DP system into Operation 85 ...
Page 13: ...13 Introduction III 3 System Overview DP2 Figure 2 system Overview DP2 ...
Page 14: ...14 Introduction III 4 Sensor Overview Figure 3 Sensor Overview ...
