Bosch Plena Voice Alarm System Manual de servicio Pagina 36

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Bosch Security Systems | 2004-06 | 9922 141 10371en
Plena Voice Alarm System | Installation and User Instructions | Installation en | 36
Normally, when there are no active calls, the Z+ pins
are internally connected to the NC contact of the Volume
Override. At the moment a call is started in a zone, the
Z+ pin of the zone is internally connected to the NO
contact of the Volume Override. So, the NC and the NO
contacts determine which voltage is supplied to the
positive pins of the override outputs (Z+).
figure 4.8: Volume override contacts
Z1
+
_
Z2
+
_
Z3
+
_
Z4
+
_
Z5
+
_
Z6
+
_
NO NC
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