Simrad AP80 Operation Manual

| 39
The alarm system | AP70/AP80 Operator Manual
Alarm/Warning Type Warning/Alarm condition Possible cause and recommended action
Drive not available A
No drive available response
upon request from autopilot
on Handshake port of faulty
SD80/AD80 board
Check that steering gear/thruster is set for autopilot
control.
Check cabling to Handshake port of faulty SD80/AD80
board.
Make sure Handshake port of faulty SD80/AD80 board is
confi guration for HS fi xed/HS pulse (refer “Confi guring the
handshake” on page 44.
Drive reference
voltage missing
A
Reference voltage to faulty
AD80 is missing
Check that the two U_CTRL dip switches of faulty AD80
boar
d is set cor
rectly (ref. cable connection label inside
faulty unit).
If drive control signal is 4-20 mA current or voltage using
internal ±10 V reference, switches must be set to INT. If
ext
ernal ref. voltage is connected switches must be set to
EXT.
If ext. ref. voltage, check cabling and measure correct
voltage bet
ween U_REF+ and U_REF of AD80 board
Drive unit failure W/A
Autopilot computer has lost
communication with faulty
device
Check that green CPU led of faulty unit is alternating (ref.
label inside unit cover for location of led). If off , check local
power supply/fuse (AC70). For other boards, check CAN
supply for 9-15 V between NETS and NETC of SimNet
plug. If led is ok, check cabling, T-connector backbone etc.
If led is on, try to restart unit by turning power off /on
End of route A
Given if WP name = "End of
route"
Warning given on the active control unit when a “END
ROUTE” waypoint name has been received from the
Plotter/ECS.
ENGAGE output
overload
W Current > 3.5 A Bypass valve or clutch is drawing excessive current (>3,5 A).
Make sure there is no shortage to ground or cabling
damage, disconnect cable from AC70 to motor, and make
sure there is no alarm when engaging FU or Auto mode.
A Current > 5 A
EVC comm. error A
Lost communication with EVC
system (Volvo IPS and similar).
Check connection with EVC engine interface.
For IPS, engine must be running.
External mode illegal A
Signals to external mode
input port of faulty SD80/
AD80 board has illegal
combination
Check if alarm is given for a certain position of external
mode selector. Check cabling to MODE SEL port of faulty
boar
d
H
igh internal temp. W >75°C Excessive temperature in unit (>75°C).
High drive temp.
W
Drive electronic temperature
>80°C
Excessive temperature in Autopilot Computer drive
transistors (>80°C), possible long term overload.
1. Switch off autopilot
2. Check for backload in Drive unit/steering system.
3. Check that the autopilot computer specifi cations
matches Drive unit
A
Drive electronic temperature
close to critical for more than
1 s.
Low CAN bus
voltage
W < 9 V
Check cable length, bus load and bus supply feeding point.
If possible, check if fault disappears by disconnecting some
units
Low supply voltage W <10 V (12 V -15%)
Mains voltage less than 10 Volts.
1. Check battery/charger condition
2. Verify mains cable has correct gauge
Low boat speed W/A
Speed below set limit for
steering in Work profi le
Speed below set limit for acceptable course keeping (in
Work profi le). Switch to hand steering or adjust Work profi le
settings.
Monitor compass
missing
W Lost sensor data
No data from the selected monitor compass. (Warning
only.)

Simrad AP80 Specifications

General

Brand	Simrad
Model	AP80
Category	Marine Equipment
Language	English