Operation Manual

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The alarm system | AP70/AP80 Installation Manual
Alarm/Warning Type Warning/Alarm condition Possible cause and recommended action
Drive ready
is missing
A
No drive available
response upon request
from autopilot on
Handshake port of faulty
SD80/AD80 board
Check that steering gear/thruster is started and set for
autopilot control.
Check cabling to Handshake port of faulty SD80/AD80 board.
Make sure Handshake port of faulty SD80/AD80 board is
configuration for HS fixed/HS pulse (refer “Note: There is
no configuration when using an SG05 PRO. No Rudder- or
Feedback calibration is required.” on page 48.
Drive reference
voltage missing
A
Reference voltage to faulty
AD80 is missing
Check that the two U_CTRL dip switches of faulty AD80
board is set correctly (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
external ref. voltage is connected switches must be set to
EXT.
If ext. ref. voltage, check cabling and measure correct voltage
between U_REF+ and U_REF of AD80 board
Drive computer
is missing
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 board
High 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 specifications 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 profile
Speed below set limit for acceptable course keeping (in Work
profile). Switch to hand steering or adjust Work profile settings.
Monitor compass
missing
W Lost sensor data No data from the selected monitor compass. (Warning only.)