Compass CN-M5 Specifications download pdf (Page 56)

ERROR CHECKING

THE AUTOPILOT WILL DISPLAY AN ERROR MESSAGE AND SOUND THE ALARM

WHEN ANY OF THE FOLLOWING CONDITIONS EXIST:

CHECKSUM

ERROR

The checksum in one of the RMA, RMB or RMC

data sentences is set incorrectly or there is a

transmission problem between the navigation

device and the autopilot.

If you choose to continue using the interface, the checksum

evaluation can be turned off by rotating the master select

switch to STANDBY and pressing the

ADJUST

key until the

display shows 'cn:ON'. Press either the up or down

ARROW

key until the display shows 'cn:OF'.

COURSE ERROR

The vessel has fallen more than 20 degrees off

course and has remained off course for more

than 30 seconds.

This indicates a possible failure of the rudder follower, or

more likely, the power steering system. Check for an

inoperative motor drive, blown breaker to the motor, jammed

four-way-valves, etc..

FAULTY

COMPASS ERROR

There is a problem with the circuitry inside the

autopilot associated with the compass

interface.

The autopilot is operable in non-autopilot modes only (i.e.

STANDBY or POWER STEER).

FAULTY DATA

FROM NAV

DEVICE ERROR

One or more of the alarm flags in the data

sentence from the Nav Device are set.

The autopilot will continue to use the data, but will sound the

alarm and display this error message after every data

sentence received until the error flags are cleared. Extreme

caution should be used if the autopilot is left in the

NAV

mode.

Check the front display of the Nav device for an alarm

message. If the alarm continues for more than 30 seconds,

disengage the autopilot.

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Compass CN-M5 Specifications Page 56

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