Volume Overrides - Bosch Plena Operating Manual

56 en | Connection
5.1.7

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).
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
_
Figure 5.8: Volume override contacts
2013.07 | V2.0 |
Override/Trigger Output
24V
Z1
Z2
Z3
Z4
Z5
Z6
TRG 1
NO NC
Installation and Operation manual
NC NO
NC
EMG
COM
COM
NO
NC
Fault
COM
NO
NC
COM Call
NO
NC
Volume Override
24V
NO
TRG2
Plena
Bosch Security Systems B.V.