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
Navigation data
missing
W/A
Lost sensor data
(NAV mode)
Navigation data from Plotter/ECS is missing.
1. Check Device list for valid navigation source
2. Try a new automatic source update
3. Check the Plotter/ECS and cable connections
New WP A
Ref. "Course change confi rm
limit" in NAV
Nav mode only; Course change from one leg to the next is
exceeding set "Course change limit"
No rudder response A
No response to rudder
command
1. Check all connections
2. Check Rudder FB transmission link (not applicable for
Virtual feedback installations)
3. Check drive unit motor/brushes
4. For SD80, check that port/stbd led is activated (ref label
in cover for location
5. Replace the Autopilot Computer Drive board
Off heading A
Boats heading is outside set
off heading limit. Automatic
reset when inside limit
May be caused by extreme weather conditions, and/or too
slow speed.
1. Check steering parameters (Rudder, Autotrim, Seastate-
fi l t e r )
2. Increase Response/Rudder value
3. Increase boat speed, if possible, or steer by hand
Override W
1. EVC override via SG05
2. Override via SD80/AD80
Handshake (ref. KaMeWa)
3. Override via SD80/AD80
RUD UI port
If unintended warning, make sure override handle is
not being activated by loose objects. Check cabling and
override switches connected to Handshake port of faulty
SD80 or AD80 board
Position data missing W/A
Lost sensor data
(NoDrift mode)
Position data from the GPS is missing.
1. Check Device list for valid position source
2. Try a new automatic source update
3. Check the GPS and cable connections
Rudder data missing A
Rudder angle signal to faulty
board is missing
If several rudder angle sensors, check which one the faulty
board is set up for use (refer “Drive test/calibration” on page
46). If the missing sensor is connected to an autopilot
computer check cabling to the board. If missing sensor is a
CAN device, check backbone bus network connection.
Rudder limit W
Limit rel. to rudder cmd in
auto modes. Not applicable
for NFU/FU where rudder
shall stop at max -3°
The set rudder limit has been reached or exceeded. This
is a warning only and may be caused by disturbance
to compass (waves), speed log, sharp turn or improper
parameter setting.
Rudder too slow W
Rudder speed from RF < 2°/
sec
Excessive load on steering gear. Air in hydraulic system.
Insuffi cient drive unit capacity.
1. Look for mechanical obstructions at the rudder/tiller/
quadrant. Check the back drive force
2. Bleed the hydraulic system
3. Replace with bigger pump unit
Sharp turn W
Acceleration > set g-limit
(Alarms - settings)
If unintended warning, check that the boat speed to the
autopilot is correct. Check that set turn rate or radius
corresponds to actual

Simrad AP80 Specifications

General

Brand	Simrad
Model	AP80
Category	Marine Equipment
Language	English