OPTIONAL CONNECTIONS
L
amps connection through EL512 relay.
In case of more than three push buttons modules, install a EL512 relay and a TF-104 to supply
the lamps. Connection should be done according to the following diagram:
EL-520
L1
L2
BUS
A
uxiliary push button of T-7722VD telephone.
The auxiliary push button of the T-7722VD telephone has two possible
functions which are configurable by JP1 and JP2 jumpers:
JP2
JP1
Activates the SAR-2PLUS auxiliary unit. To configure and wire
this unit, refer to its installation manual.
JP2
JP1
Activates the PA and PB contact closure of the telephone, so it can be used for
switching on the lights, opening an additional door, etc. The maximum
authorised current is 40mA; for higher values, install a relay and a transformer
as shown in the diagram.
Additional door opening
JP2
JP1
S+
S-
BUS HZ
CV2
CV1 +12
T-7722VD
SEC
HZ
PA
PB
~
Network
EL-512
NA1
C1
NC1
NA2
TF-104
PRI
O
B
~
~
~
TF-104
SEC
PRI
~
~
~
C2
NC2
Red
R-3
R
T
M
65
~