User's Manual

Table Of Contents
ED 3100 G 140 / 04 (2011-11)
Operating Instructions
III-3 Permanent Area for Navigation
III Main Applications.fm / 10.11.11
III-33
NACOS Platinum
3.2 Navigation Sensors
This chapter describes the navigation sensors available in the system. The main navigation sensors used
for the heading, speed and position instruments are monitored depending on the “sensor selection
mode”. Those sensors which are available twice or more in the installation can be supported by an auto-
matic selection mode indicated by AUTO in the different displays.
- If the selection mode is AUTO the switching over to another sensor of the same type is done with
a warning indicating the new sensor selection.
In AUTO mode the switch over to a manual sensor (Manual Speed or Manual Position) is accompa-
nied by an alarm if the manual data have not been set before.
- If the manual sensor selection is chosen the switching over to the backup sensor must be done
manually after the respective alarm or warning has been given.
In the meantime (until a new sensor has been selected) the system is using the last valid values of
the disturbed or faulty sensor which produced the alarm.
It is required to perform the switch over to the new sensor as soon as possible, but not before its
data have been checked for plausibility and correctness.
Details are given in chapter
V-ALARMS
as required in the explanations to the different sensor alarms.
The automatic selection mode is the default setting after start or restart of the
system.
In any case (in manual or automatic sensor selection mode) the set data for the
sensors running in manual mode must be checked regularly and a real sensor
must be selected as soon as possible.