TEMA TELECOMUNICAZIONI SRL
Doorphone AA-514
MAS-AA514-REV03EN
Page 32 of 56
8.5.3. CASE 3: drive of two electric locks system powered with 3 different power supplies
AA-514, as in the case 1, activates the two separate electric locks and takes the power supply itself. Case with
three different and separate supply voltages. A first power source with a voltage of 12VAC is required for the
system, a second power source of 30V maximum for the first electric lock and a third power source of 30V
maximum for the second electric lock. Please note that not having been realized connections between different
blocks (the system itself and the two electric locks) the three power supplies provided to the system remain
independent between them. Note the separate connections on the blocks TB1, TB3 and TB4. The telephone line
must be connected on the TB2 terminal block. The connections to be made during the stages of installation are
shown in dashed lines. Using the possibilities of connection of the power supplies and loads offered by AA-514 it is
possible to get a great flexibility in driving loads with different electrical characteristics between them.
In this example, the correct values of the parameters involved in the management of the relays could be:
•
parameter 138 = 0
the relay1 is activated by telephone code
•
parameter 144 = 0
the relay2 is activated by telephone code
•
parameter 137 = 2
pulse time opening driveway gate, relay1, in seconds
•
parameter 142 = 2
pulse time opening pedestrian gate, relay2, in seconds
Telephone
line
Two separate
power supplies for
the two electric
locks (Max 30Vac)
Pedestrian gate
electric lock
Driveway gate
electric lock
Power supply
12Vac
