Kongsberg cJoy OT, Руководство оператора

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Message explanations
A-46 385585/C
Rescale the thruster pitch and/or generator power feedback signals.
Power out of range on generator [#]
Description: This message is reported if the measured generator power is negative or has a too
great value.
The reason for the fault may be the analogue input interface, a fault in the cabling
or the feedback level has been changed such that the DP's internal scaling and
bias factors are no longer correct.
The method of detection is measuring the generator power feedback signal and
comparing it with allowed limits.
Additional
information:
•
Measured power (in kW).
•
Maximum limit allowed.
•
Minimum limit allowed.
Possible
consequences:
The power management system no longer functions correctly, which may in turn
cause unwanted pitch reductions.
Corrective
actions:
Check the current shown by the generator ammeter and compare it with the value
of the analogue feedback signal from the generator.
Replace the appropriate input interface.
Rescale the generator power feedback signal.
Power unbalanced load on swbd [#]
Description This message is reported if the percentage load on one or more of the generators
connected to the swbd differs considerably from the total percentage load on the
swbd, i.e. a unbalanced load is detected.
The reason for the fault may be an error in the analogue input interface or in the
cabling, or that the load percentage on a generator is too high relative to the total
load on the swbd.
The method of detection is that the measured load percentage on one or more
generators is considerably different from the load percentage of the total swbd.
Additional
information
Load percentage on the swbd.
Possible
consequences
The DP system will not take any action if the generator load is higher than the
other generators.
The DP system will reduce the maximum available load on the generator in the
power calculations if the load is lower than the other generators. The DP system
will assume that the generator has problems with picking up load. This might
cause the thrust to be reduced on the affected thrusters in case of power shortage
on the swbd.
Corrective
actions
Check the current shown by the generator ammeter and compare it with the value
of the analogue feedback signal from the generator.
Replace appropriate input interface.
Adjust the load percentage for the generator.