34
ADDITIONAL SUPPLY VOLTAGES
In “Elvox TWO WIRE ” installations, power supply type 6922 po-
wers all the appliances: entrance panels, interphones, monitors,
concentrators, distributors. When the maximum load of the ap-
pliances exceeds the maximum load of the power supply it is ne-
cessary to add additional power supplies. The insertion of a
separator with a power supply type 6922 in the installation, split
the appliance charge upstream of the separator from the applian-
ces downstream of the separator.
Power supply type 6923
The additional power supply type 6923 is to be used to power
electronic entrance panels, monitors and concentrators suppor-
ting the main power supply type 6922. When there is a lodge
switchboard there must always be installed a power supply type
6923 dedicated to the switchboard. The power supply is requi-
red when there are more video entrance panels installed and/or
when there are more monitors turning on simultaneously at the
same call. The power supply can power only a particular ap-
pliance: entrance panel or monitor. The tables show when it is
necessary to use a power supply type 6923 according to the
number of entrance panels mounted in the installation and accor-
ding to the number of interphones or monitors activated/turned
on simultaneously.A power supply type 6922 powers up to 3
units simultaneously, besides them it is necessary a power sup-
ply type 6923 for each unit added. If the consumption exceeds
the 3 units, use one power supply type 6923 to power the moni-
tors and the entrance panels and leave the power supply type
6922 dedicated to other appliances.
Consumption for unit:
1 video entrance panels switched on
= 1 unit
1 audio entrance panel switched on
= 1/2 unit
1 entrance panel not switched on/engaged = 1/4 unit
1 monitor switched on
= 1 unit
1 concentrator type 692C
= 1/3 unit
1 active distributor type 692D/2
= 1/20 unit
1 separator type 692S
= 1/40 unit
Attention: when using active distributors, it is not possible to
power them separately with the additional power supply.
Example of audio and video installation in a building:
A
– Interphone
B
– Video
interphone
C
–
Electronic audio entrance panel
D
–
Electronic video entrance panel
F
–
Power supply type 6922
I
–
Separator type 692S
J
-
Concentrator type 692C
L
– Door
lock
N
–
Video distributor type 692D
N2
– Video distributor type 692D/2
Example of video entrance panel system for building com-
plex.
The hereby wiring diagrams are reference examples for the ta-
bles to follow (Tab. A, Tab. B and Tab. C) for the insertion of the
additional power supply type 6923.
Tab. A
Tab. B
Tab. C
N2
2
2
2
2
2
2
A
B
B
2
2
L
2
I
2
2
2
2
2
I
2
2
F
2
2
C
L
L
F
2
D
D
2
C
L
2
2
L
D
J
2
2
J
2
F
2
2
2
N
N
L
2
D
Tab. A
Tab. B
2
2
2
2
2
2
A
B
B
2
2
2
2
2
2
2
2
F
2
2
C
L
L
F
D
2
C
L
2
2
L
D
J
2
N
N
