4When Track Control Is Stopped - Furuno FMD-3200 Operator's Manual

Total lost position (position from ALL GPS navigators is unreliable)
• Alert "30400 EPFS1
COM Error" (example).
OR
• The Kalman filter de-
tects position jump, etc.
Within 30 • Alert "156 Sensor Fail-
seconds
ure"
• Alert "170 Positioning
System Failure".
• Alert "30510 No Filter
Source of Position".
• Alert "30510 No Filter
Source of COG/SOG".
Repeated • Alert "30853 Use MAN
every two Steering"
minutes
Within 10 • Alert "153 Track Con-
minutes trol Stop"* is generat-
ed at the ECDIS. The
lamp
lot's Steering Control
Unit (or Control Panel)
lights.
*Transferred to BNWAS
if not acknowledged
within 30 seconds.
*1
PT-500A: EMRG ALM; PR-6000: RC; FAP-2000, FAP-3000, PR-9000: ALARM
*1
156 "Position Failure" on IEC 60265 Ed. 2 complying autopilots (PR-9000).
26.10.4 When track control is stopped...
• Track control is stopped on a straight leg: The autopilot goes into the heading
keeping mode and the heading at the time the track control was stopped becomes
the set course.
• Track control is stopped on a curved leg: The autopilot goes into the heading
changing mode and the bearing of the straight leg TO waypoint becomes the set
course.
Associated
alerts
• The Kalman filter is
*2
• If you have a log or
• If you have a log or
Guidance for navigator
TCS stops and
• If the ship is running
*1
on the Autopi-
• If the ship is turning,
26. AUTOPILOT OPERATIONS
Expected system
performance
turned OFF and the
system uses dead
reckoning for position-
ing.
dual-axis log, then
dead reckoning is
based on them and the
gyro.
dual-axis log, then
dead reckoning is
based on last valid
speed from position
sensors.
straight, actual head-
ing is used as set
course.
last-set course and ra-
dius are used to com-
plete the turn.
Operator
action
• Acknowledge alerts.
• Monitor situation.
• Acknowledge alerts.
• Monitor situation.
• Change immediately to
local Autopilot control.
• Acknowledge alerts.
• Acknowledge alerts.
• Monitor situation.
• Change the steering
mode to AUTO (HEAD-
ING CONTROL on
FAP-3000).
.
26-35