Total Lost Position - Furuno FEA-2107 Operator's Manual

28. Trackpilot
28.9.6

Total lost position

Associated alarms (generated
at ECDIS)
•
Alarm "4012...4016:
Position equipment error"
OR
•
Kalman filter detects jump,
etc.
•
Alarms "2000 Filter:
Within 30
Position unreliable" and
seconds
"2006 Route: Course jump
possible."
•
After 2
Alarm "2506 Route: Use
minutes and
Radius control" or "2504
then every 4
Progtrack: Use Radius
minutes
Ctrl."
•
After 4
Alarm "2475 Route Needs
minutes and
filter ON", or "2493
then every 4
Progtrack: Needs filter
minutes
ON."
•
Within 10
Alarm "2496 ProgTrack:
minutes
Stop-Sensor fail" or Alarm
"2497 Route Stop-Sensor
fail."
28-32
Expected system performance
•
Kalman Filter is switched Off
and system uses dead
reckoning for positioning.
•
If you have log or dual-axis
log, then dead reckoning is
based on them and gyro.
•
If you have log or dual-axis
log, then dead reckoning is
based on last plausible speed
from position sensors. This is
indicated by showing own ship
position, SOG and COG in red.
The source indication for SOG
and COG is "(LAST)".
•
Guidance for navigator
•
Reminder
•
Automatic change of steering
mode to Radius Control mode.
•
If ship is in linear part, actual
heading is used as set heading.
If ship is turning, last-set
heading and radius remain.
What end user should do
•
Acknowledge alarms.
•
Study situation.
•
Acknowledge alarms.
•
Study situation.
•
Change immediately
to local autopilot
control.
•
Acknowledge alarms.
•
Acknowledge alarms.
•
Study situation.
•
Acknowledge alarms.
•
Study situation.