Application Hints For The Acceleration Monitor - Raytheon NautoPilot NP 5100 Operator's Manual

2.3.5.4.1

Application hints for the Acceleration Monitor

The Acceleration Monitor supports the user adjusting RAD/RoT limits in a way for that
the acceleration limit will not be met. Additionally, if the calculated limits (speed, RAD/
RoT) are about to reach the acceleration limit, an alert is generated to inform the user.
If the set limits do not fit the calculated limits, this will be displayed in the Acceleration
Monitor display. If function "Warning" is active (see Figure 33/17), an additional alert is
generated.
Referring to Figure 33
General:
Positions 4 to 7 are the current values.
Positions 1 to 3 are the current calculated limits for the acceleration monitor.
Position 20
The cross acceleration limit value (position 20) can be either adjusted or calculated.
The base of this value depends on ships speed and turn radius or rate of turn.
If the maximum tolerable acceleration is known (ask the ship's command), it can be di-
rectly adjusted, by input/change (positions 14 and 20).
The values for rate of turn and speed are adapted accordingly.
If this value is unknown it can be calculated by the NautoPilot Operator Unit itself.
This calculation is performed using rate of turn (position 19) and speed (position 18).
The calculated cross acceleration limit is displayed "on the fly" (see position 20).
Additionally (during the input of the respective value) an alert is indicated in the "Acceler-
ation Monitor" page if this value could lead to an alert (by a small attention sign behind
the respective line).
Edition: September 2014
OPERATION
NautoPilot 5000 Series
An excess of such a limit leads to an alert (if this function is enabled
see position 17).
displays the monitored limit value for alerts.
For information only:
Radius (position 3) is calculated based on Acceleration
Limit (position 7) and Actual Speed (position 4).
RoT (position 2) is calculated based on Acceleration
Limit (position 7) and Actual Speed (position 4).
Speed (position 1) is calculated based on Acceleration
Limit and Radius (position 6) or RoT (position 5).
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