Volume Overrides - Bosch Plena Voice Alarm System Installation And Operation Manual

Plena Voice Alarm System
5.1.7

Volume overrides

The voice alarm controller has 6 override outputs; 1 for each zone in the system (see
Figure 5.7). These are suitable for 4-wire override (24 V) and 3-wire override.
NOTICE!
By default, the voice alarm controller is configured for 4-wire (24 V), power-saving override,
see situation I in Figure 5.9.
Figure 5.7 Override outputs
Internally, the positive override pins (Z+) are all connected to either the NC or the NO contact
of the Volume Override output (see Figure 5.8). The negative override pins (Z-) are all
connected to earth.
Figure 5.8 Volume override contacts
Bosch Security Systems B.V.
Override/Trigger Output
24V
NC
Z1
COM EMG
NO
Z2
NC
Fault
COM
Z3
NO
NC
Z4
Call
COM
NO
Z5
NC
24V Volume Override
Z6
NO
TRG 1
TRG2
+
Z1
_
+
Z2
_
+
Z3
_
+
Z4
_
+
Z5
_
+
Z6
_
NO
Installation and Operation manual
NC NO
COM
NC
Connection | en
9922 141 1037x (V2.16) | V0.6 | 2011.09
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