TEMA TELECOMUNICAZIONI SRL
Doorphone AA-514
MAS-AA514-REV03EN
Page 36 of 56
8.5.7. CASE 7: connection between base unit and expansions
Here are some examples of compositions obtainable by the various modules of the AA-514 system. In addition to
the required connections to the AA-514 base system between a module and another one (as detailed in the
descriptions and examples on previous pages), for the backlight of the AA-516R expansion legend module are
required other connections as indicated in the following table.
Pair AA-514 + AA-516P or AA-514 + AA-516K
Connect the two modules using the FC flat cable
supplied with the expansion module, power only the
base system with AL-39AL on TB4.
AA-514 + AA-516K + AA-516R
The cascade connections from the AA-516K module to
the next AA-516R modules can be skipped if it is not
necessary to backlight or not heat the area of the
legend of the modules
Power the only base system with AL-39AL on TB4.
Connect the base system with the keyboard expansion
using the FC flat cable supplied with the expansion
module. Then connect the terminal TB5 of the base AA-
514 with the terminal TBE3 of the expansion AA-516R
(see next page for details).
AA-514 + AA-516K + three AA-516R modules
Keep in mind the power consumption of all modules
that are going to be connected with the various enabled
functions (for example, backlight and anti condensatio n
when necessary).
Power the base system with a first AL-39AL on TB4.
Connect the base system with the keyboard expansion
using the FC flat cable supplied with the expansion
module.
Power the first expansion with a second power supply
AL-39AL on TBE2. Connect from the first AA-516R
expansion the other expansions in cascade using the
TBE3 block terminals (see next page for details).
Please note the presence of the two power supplies
necessary in this instance to divide the loads on the
basis of the power consumption of the circuits of the
backlight and anti condensation of all the modules.
1.5A
1.5A
1.5A
1.5A
1.5A