Справочник Пользователя для Pelco SD4N-B0-X
20
C3446M (7/08)
UNSUPERVISED ALARMS
When an alarm is configured as an unsupervised alarm, the dome system only triggers an alarm when the
normal alarm state (normally open or normally closed) changes.
normal alarm state (normally open or normally closed) changes.
Figure 15 shows the alarm and no alarm conditions of an unsupervised alarm input. A normally closed
alarm input can be defeated with a bypass; a normally open input can be defeated with a cut.
alarm input can be defeated with a bypass; a normally open input can be defeated with a cut.
Figure 16 and Figure 17 show the wiring configuration for unsupervised alarm inputs.
Figure 15. Unsupervised Alarm Conditions
Figure 16. Normally Closed Unsupervised Alarm Input Wiring
Figure 17. Normally Open Unsupervised Alarm Input Wiring
NORMALLY OPEN
NORMALLY CLOSED
ALARM
GND
+V
+V
ALARM
GND
+V
+V
NO ALARM
GND
ALARM
GND
+V
+V
+V
NO ALARM
GND
CUT
BYPASS
CUT
NO ALARM
GND
NO ALARM
GND
+V
BYPASS
ALARM
GND