Acceleration Monitor (For Nautopilot 5400 And 5500 Only); Adaptive Mode (Weather Adaptivity); Information About The Steering Switch - Raytheon NautoPilot NP 5100 Operator's Manual

1.3.9

Acceleration Monitor (for NautoPilot 5400 and 5500 only)

(see also section 2.3.5.4).
As an unique feature, NP 5400 and 5500 integrate an Acceleration Monitor that monitors
the ship's cross acceleration and provides a warning if a cross acceleration limit is ex-
ceeded. This helps to avoid damage or accident due to high acceleration stresses that
might occur for example during a heading change at high speed and finally increases
safety for life, ship and cargo.
In the setup window the acceleration limit is directly input (Page  Limit  Acceleration
Limit) or calculated with values like Rate of Turn (RoT) and speed. An Alarm is provided
if the actual speed and radius/RoT cause accelerations larger than defined value.
In addition this Acceleration Monitor function can be switched on and off.
1.3.10

Adaptive mode (Weather Adaptivity)

This mode controls the optimal heading or Track Control via the Economy or Precision
function.
This function ensures that the NautoPilot 5000 Series (except NautoPilot 5100) reacts
automatically to the current weather conditions.
The Economy mode guarantees a reduction of the rudder movement with less course
keeping accuracy. The reduction of the rudder movement results in less forward thrust
loss and consequently less fuel consumption.
The Precision mode guarantees exact course keeping. The rudder movement can be
notably reduced by using yawing settings.
1.3.11

Information about the Steering Switch

The Steering Switch (also designated as "Main Steering Switch", "Steering Selector" or
"Steering Mode Selector Switch") does not belong to the NautoPilot 5000 Series directly,
but its function is essential for some operating procedures.
This switch has a minimum of two switch positions. These switch positions may also
have different designations (for example "HAND" and "AUTO", "NFU direct" and "MAIN",
"MAIN" and "SECONDARY" or "NFU" and "FU").
The different designations are caused by different steering philosophies, different
manufacturers and different user requests.
It is absolute necessary to become familiar with its designation and function within a
steering system.
For the steering system described in this manual, the switch has the switch positions
"HAND" and "AUTO" but with different functions depending on the application.
4002.DOC010102
OPERATION
NautoPilot 5000 Series
12
Edition: September 2014