Sharp YO-370 Manual Pagina 20

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8 Revision 10 – 1/09/2015 FTS 370d/w/r
Alarm Interface & Mode Indicator Connections
Dry contact alarm connections, located on
PCB 1, are available regardless of any
additional monitoring method used. The
available dry contact alarm outputs are
listed in Table 1-4 and shown in Figure
1-4. Each contact may be wired as
normally open or normally closed. The
contacts are labeled to indicate their state
with the system powered on without an
alarm present.
Mode indicator contacts are available on
P4 terminals 10 12. When powered on,
an open contact between COM and NO
indicates the system is operating in Night
mode and a closed contact indicates the
system is operating in Day mode. An
open contact between COM and NC
indicates the system is operating in Day
mode and a closed contact indicates the
system is operating in Night mode. The
mode indicator contacts do not
differentiate between manual and
automatic operation as determined by the
Manual Mode Switch.
Figure 1-4 – Alarm Interface & Mode Indicator Connections
Table 1-4 – Alarm Interface & Mode Indicator Connections
Connector Alarm Terminal Function
P3
Day
Alarm
COM (1)
NO (2)
NC (3)
Common
Closes to indicate an alarm in day mode.
Opens to indicate an alarm in day mode.
P3
Night
Alarm
COM (4)
NO (5)
NC (6)
Common
Closes to indicate an alarm in night mode.
Opens to indicate an alarm in night mode.
P3
Marker
Alarm
COM (7)
NO (8)
NC (9)
Common
Closes to indicate a marker alarm.
Opens to indicate a marker alarm.
P4
Photo-
Diode
Alarm
COM (1)
NO (2)
NC (3)
Common
Closes to indicate a photodiode alarm.
Opens to indicate a photodiode alarm.
P4
GPS
Sync.
Alarm
COM (4)
NO (5)
NC (6)
Common
Closes to indicate a Sync Alarm.
Opens to indicate a Sync Alarm.
P4
Comm.
Alarm
COM (7)
NO (8)
NC (9)
Common
Closes to indicate a Comm. failure.
Opens to indicate a Comm. failure.
P4 Mode
COM (10)
NO (11)
NC (12)
Common
Open indicates Night mode. Closed indicates Day mode.
Open indicates Day mode. Closed indicates Night mode.
P3
P4
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