Simrad AP80 Operation Manual

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The alarm system | AP70/AP80 Operator Manual
Alarm/Warning Type Warning/Alarm condition Possible cause and recommended action
Red fl ashing AP70/
AP80 power button,
black display
A < 5 V
Local supply voltage to AP70/AP80 missing or <5 V.
Check local supply, connections and fuses to AP70/AP80
control units
Active control unit
missing
A
Autopilot computer has lost
contact with active control
unit
Active control unit goes silent.
1. Check/repair CAN bus cable
2. Replace the control unit
Autopilot computer
missing
A
Active control unit has
lost contact with autopilot
computer
Faulty autopilot computer or poor cable connections from
the same.
1. Check connectors and cable
2. Check local power to control unit
3. Check that control unit is turned on
4. Replace autopilot computer
 Note: This alarm will only show up on passive units
if active control unit is defective or has lost bus
communication.
Boat speed missing W/A Lost sensor data
The speed signal from the GPS or the log is missing.
1. Check Device list for valid speed source
2. Try a new automatic source update
3. Check the GPS, log, and cable connections
CAN bus failure A
Not possible to send or
receive data although bus
voltage is ok
Poor CAN bus backbone, defective cable/connector or
defective CAN bus receiver in autopilot control unit.
1. Check backbone terminations
2. Check cable and connectors
3. Replace Autopilot control unit
CAN bus supply
overload
W Current >4.3 A Check summary unit loads
A
Current >10 A for 1 ms, hw
shutdown
Excessive current draw.
Check for short circuit/defective device on network.
Check heading A
Lasting steering compass
heading jump >10° within 1
sec during automatic steering
A sudden jump in heading of more than 10 degrees is
detected
Check steering compass. Possibly change to other heading
source or monitor compass.
Compass diff erence A
Diff erence between steering
compass and monitor
compass +variance > set limit
The diff erence in readings between the main compass and
the monitor compass exceeds the limit set for “Compass
diff erence”.
Check the operation of both compasses. If one compass is
magnetic, the error may be caused by deviation change or
heavy sea disturbances.
Course diff erence A
Actual heading diff from track
course by set limit
Compass heading is deviating too much from the track
course (BWW). May be caused by extreme wind and
current, combined with low speed.
Cross track distance
limit
W/A XTD > XTD limit
XTD has reached set XTD limit in NAV/TRACK mode. May
be caused by extreme wind and current or too low boat
speed.
Drive inhibit A
Motor or solenoid drive
electronics critically
overloaded
Check f
or wir
e shortage, eventually disconnect suspicious
wires.

Simrad AP80 Specifications

General

Brand	Simrad
Model	AP80
Category	Marine Equipment
Language	English