DS1067-056D
5
CONNECTING THE TELEPHONE LINE
If you want to connect the unit to the PSTN telephone line use one of these diagrams:
The control panel must be the first device connected to the incoming telephone line (all the other potential
devices - fax, answering machine, and telephones - must be downstream from the control panel). This type
of connection guarantees that, if needed, the control panel can always engage the telephone line,
excluding all the other devices connected if necessary.
Handle the twin telephone line carefully, as it may be live from the telephone control panel power supply.
When connecting the twin telephone line to the LA and LB terminals of the interface, it is not necessary to
take polarity into account.
The 1067/002A board has a yellow LED to indicate if the telephone line is engaged.
The telephone interface must be grounded The telephone interface is already equipped with one protection
that is appropriate to the regular needs as required by the existing regulations.
If there should be high risk of electrical shock on the telephone line in the work area, it is advisable to install
supplementary protection (not provided) on upstream of the control panel on the telephone line.
TECHNICAL SPECIFICATIONS
Nominal power voltage ................................................................................................................... 13.8 Vdc
(taken from the control panel)
Nominal current absorbed at 12 Vdc
in stand-by ............................................................................................................................................ 3 mA
in telephone line connection ............................................................................................................... 20 mA
Reference standard .................................................................................................................... EN50136-2
ATS Classification ................................................................................................................................. SP2
Operating mode ...................................................................................................................... Pass-Through
