NautoPilot® 5000 Series
102-890.NG001-NG003
Operator Manual
10000001052
12
Edition: 003
Note
:
The desired value for the rate of turn (RoT) depends on the physical characteristics
of the ship. The ship should be able to perform the turning value. Desired rates of
turn exceeding the turn capability of the ship result in the OFF heading alarm being
triggered before the ships heading reaches the desired Set Heading.
This effect also occurs if the rudder limit is adjusted too close, so the selected
RAD/ RoT- limit is not achievable.
On taking the Autopilot into operation, make sure that the basic settings
(configurations) are precisely adjusted. In order to control the turning rate, a
sufficient rudder amplification (optimization of rudder parameters) must be ensured.
If the desired heading, the radius, or the turn rates are changed during a
heading change maneuver, the time window will immediately be calculated
anew.
1.3.7
Course Trim
Please note:
The Course Trim angle can be adjusted for the modes Course
Control and Track Control (Page
→
limits
→
Course Trim). See
section 2.3.6.4. The setting angle of the vessel is limited to this
adjusted value. (This is valid for NP5100 to NP5400.)
Achieving this angle, the alarm Course Trim is activated.
If the Course Trim angle is adjusted too small it could happen, that
the vessel will be off the track. In this case the Course Trim angle
must be changed or another control mode must be selected.
The Course trim angle defines the angle between the actual course (calculated
with speed and position) and the actual heading value from a heading sensor.
Course and heading may have different values, caused by drift, wind or sea state.
For NP5500 only
If the limit for the Course Trim angle is reached the alarm Course Trim is activated
as for the other NautoPilots. The maximum Course Trim angle for the NP5500
depends on the actual ship’s speed and actual drift. So, it is possible for the course
trim angle to be greater than 30
in order to keep Track.
Figure 5: Course
Trim angle
