Page 3-02
NAVIGAT X MK 1 Mod. 10 / SR-180 MK 1 Mod. 10
056310
3-149 MK110ENG.P65
3.1.2
Alarm Relays
The gyrocompass system provides three alarm relays to signal a detected alarm
state to external devices. When the system is energized and no alarm state is de-
tected, the alarm relays are attracted , i.e. the relay contacts closed.
If failure occurs in the compass which is currently selected as the heading reference,
an alarm is given and relay K6 (power failure and general alarm) released.
If the currently set heading difference threshold is exceeded, an alarm is given and
relay K7 (hdg. diff. alarm) released.
If the currently set max. rate of turn threshold is exceeded, an alarm is given and relay
K4 (max. ROT alarm) released.
A released alarm relay will attract again automatically when the cause of the alarm is
eliminated.
3.1.3
Error List
The gyrocompass system maintains a list of currently detected errors which is acces-
sible via the service setup 2 menu.
SERVICE SETUP 2
ERROR LIST
FAILURE GYRO 1
NUMBER OF ERRORS: 01
...
.
.
.
.
.
.
.
.
If more than one error is detected, the error causes are indicated alternately in the
third display line. The number of detected errors is displayed in the fourth display line.
Confirmation of an alarm state does not clear the corresponding entry from the error
list. Entries are cleared automatically from the list when the cause of a given error is
eliminated.
