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Alarms
, warnings, and cautions
The Autopilot Set Up Data is stored in the Distribution Unit non-volatile memory and
read at power up. The integrity of this data is verified when read and will only be used if
no errors are detected. A checksum is included to guard against corrupted data being
used.
If the current Set Up Data is unable to be loaded at power up for any reason, the “HCS
fault: No Setup data” message will be d
isplayed. The Autopilot will continue to function,
but all setup parameters will be set to their factory default values.
If the “HCS fault: No Setup data.” message appears, switch the Autopilot “OFF”. Wait a
few seconds then set the Autopilot to
STANDBY. If the “HCS fault: No Setup data.”
message is again shown when the Autopilot is re-powered, it is likely that the Set Up
Menu data is corrupted thus the integrity of the stored setup data must be considered
suspect and should be cleared down.
NOTE: Contact a certified installation company approved by either ALPHATRON
MARINE or by an official ALPHATRON MARINE distributor for support.
iii)
HCS fault: Control unit interface error. (caution).
This condition indicates no data received by the Control Unit.
N
OTE: Contact a certified installation company approved by either ALPHATRON
MARINE or by an official ALPHATRON MARINE distributor for support.
iv)
HCS fault: Draft adaptive control unavailable, no data. (caution).
The Draft failure alarm will only be activated if the Autopilot has previously been
installed using such data (4
–
20 mA draft input signal) which is later absent (check 4
–
20
mA Draft Data Source).
N
OTE: Contact a certified installation company approved by either ALPHATRON
MARINE or by an official ALPHATRON MARINE distributor for support.
Low speed
The Low Speed:
Ship’s
speed too low for HDG control (warning / alarm) relates to Speed over the
Ground and warns that SOG is too low for the Autopilot system to undertake the
programmed/required radius of turn due to prevailing conditions (SOG too low vs drift etc.).
Speed
increase required.
NOTE:
The “Low Speed: Ship’s speed too low for HDG control” warning will escalate to an alarm if not
acknowledged within 30 seconds.
NOTE: Contact a certified installation company approved by either ALPHATRON MARINE or by an
official ALPHATRON MARINE distributor for support.
HDG in fallback
The “
HDG in Fallback: <source 1> lost, normal HC using <source 2>
”
caution message will be
activated if the Autopilot is engaged and an alternative heading source is used (<source 2>) due to
the failure of the heading source in use.
Possible messages are:
