16
7. DC EMERGENCY POWER SUPPLY
Warning
The Z8SLAVE is designed to operate in EMERGENCY with 24Vdc continuous external voltage to be applied
to the terminals (ref.6-fig2).
Note
A
– In case of battery power supply, the unit is not designed for battery recharging.
B
– If the unit is powered by 24Vdc voltage, in case of blackout the farther positioned microphone stations
could not be operating. Operation of emergency microphone station, if installed, is however guaranteed.
8. CONNECTIONS
8.1 INPUTS
8.1.1 BATTERY
24Vdc emergency power supply input (
ref.6-fig.2)
.
8.1.2 MUSIC
To be used for parallel connection to the MUSIC terminal of the ZONE8 unit.
8.1.3
VOICE
To be used for parallel connection to the VOICE terminal of the ZONE8 unit.
8.2 OUTPUTS
8.2.1 LINK
- (
rif.11-fig.2)
Connection to ZONE8 main board
.
To implement this function, connect the two
units using a CAT5 standard cable and the RJ45 connectors.
8.2.2 TO ZONES
from zone 9 to zone 16 (
ref.8-fig.2)
. – Connect according to the two operating
configurations of the ZONE8 board. (B e C).
8.2.3 MATRIX INPUT
- (
ref.12-fig.2)
Connection to external audio matrix (MATRIX88).
9. OVERRIDE OR BYPASS OF LOCAL VOLUME CONTROL ATTENUATORS (REF.8-FIG.2)
In some applications, local volume control attenuators (TRVxxx series) upstream of the loudspeakers are
used to allow independent volume adjustment in specific zones.
In this case it is necessary to by-pass these level controls in order to make the announcement or the alarm
call audible.
The ZONE8/Z8SLAVE units provide the two classic configurations for this function: 24V override control –
“3-wire” system override.
24Vdc bypass relay system “3-wire” system