Bosch Plena - Volume Overrides

Volume overrides
The voice alarm controller has 6 override outputs; 1 for each zone in the system. 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
(refer to situation I below).
COM
NC
NO
NC
TRG2
Override/Trigger Output
TRG 1
24V
EMG
Fault
Call
Z1
Z2
Z3
Z4
Z5
Z6
NC
COM
NO
NC
COM
NO
NC
COM
NO
NO
24V
Volume Override
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. The negative override pins (Z-) are all connected to earth.
Z1
+
_
Z2
+
_
Z3
+
_
Z4
+
_
Z5
+
_
Z6
+
_
NO NC
Figure 5.8: Volume override contacts
5.1.7
56 en | Connection Plena
2013.07 | V2.0 | Installation and Operation manual Bosch Security Systems B.V.