TEMA TELECOMUNICAZIONI SRL
Doorphone AA-539
MAS-AA539-REV02EN
Page 36 of 57
8.5.7. Connection of inputs for external contacts acquisition
AA-539 has three inputs for acquisition of external contacts useful for special conditions or alarm signaling.
Upon detection of activation of the contact connected to each input can be associated a different phone number to
contact (to which the operator that handle the event must answer).
Usually the inputs of the system are connected to normally open contacts and the closing of it will activate the call
signaling sequence. It is possible to program the system to reverse this way of detection, so that the acquisition of
activation of the contact and the triggering of the respective signaling takes place by the opening of a contact that is
closed under normal conditions.
AA-539 continuously monitors the status of its three inputs (and the respective external contacts connected).
In case a contact is triggered, AA-539 stores it in a non-volatile memory (EEPROM) and provides to start the
notification cycle. In event of physical disconnection of the telephone line with AA-539 power off, the phone alerts
will be resumed at the system power on.
Note: performing a restore to factory default settings of the entire system (see 9.2), all the alarms will be deleted,
including the phone numbers associated with them.
Connecting of external contacts to the terminal block TB6 of AA-539 system
Removable terminal block TB6
TB6.1 Input for acquisition of the contact number 1
TB6.2 Input for acquisition of the contact number 2
TB6.3 Input for acquisition of the contact number 3
TB6.4 -- (not used)
TB6.5 Common point to all connected contacts
TB6.6 Common point to all connected contacts
External contact input 1
External contact input 2
External contact input 3
