Interlogix ATS125 Serie Instructions D'installation page 11

See "ATS system databus connection", "ATS125x local
databus and earth connection", and earthing details below.
Earthing
WARNING: Correct earthing procedure must be followed.
Earthing of one cabinet containing several devices
All devices designed for the system have earth connections via
metal studs to the metal housing. Take care that these metal
studs have a good connection to the housing (beware of paint).
The earth connections of each piece of equipment in the
system can be used to connect the shielding of shielded
cables.
If a device is placed in a plastic housing, the earth lug of this
device also has to be connected, except for devices, which are
not provided with an earth lug.
Earthing panels in a single building
In a single building several cabinets or devices are earthed.
A licensed contractor must check the safety earth of this
building.
Earthing panels in more than one building
If the wiring extends to separate buildings, use more than one
common earth system. Use the ATS1740 isolator/repeaters to
isolate the system databus. This protects the system against
variations in earth potential.
Shielding
The shielding of all shielded cables used in the system should
only be connected on ONE side to one common earthing point
in a building. If a shielded databus cable is routed via more
than one plastic device, the shielding from the in-coming and
out-going cable must be connected.
Figure 3 legend
Item Description
(1) Mains power with local earth
(2) Mains power connector
(3) System databus
(4) Earth lug
(5) Building 1
(6) Building 2
(7) Device in metal housing
(8) Device in plastic housing
(9) ATS control panel
ATS system databus connection
See Figure 7.
The system databus is used to connect DGPs (such as
ATS125x) and arming stations to the ATS control panel.
Remote devices can be up to 1.5 km from an ATS control
panel.
P/N 1070341 (ML) • REV A • ISS 05JUL13
Each remote device is assigned an address and is polled in
sequence by the ATS control panel. Up to 12 four-door DGPs
can be connected on the main ATS system databus.
Arming stations and DGPs must be connected via a 2-pair
twisted shielded data cable from the system databus
connection (WCAT 52 is recommended).
Connect the shield of the data cable to earth at the ATS control
panel. It should be left disconnected at the other end.
The four-door DGPs have their own built-in power supply and
do not require power from the databus. Only the D+, D− and 0
V connections are required between the ATS control panel and
a four-door DGP.
ATS125x local databus and earth
connection
See Figure 5.
The ATS125x allows for 16 arming stations (LCD-RASs, Smart
Card readers) to be connected to the local databus
(CON9/CON10).
The ATS125x local databus consists of 2 electrically
independent loops. If there is a failure in one loop, the other
loop can still communicate with the remote devices. The
location of devices on the first or on the second loop has no
influence on the functionality, as both loops behave as one
databus.
Wire the door contacts and Request-to-Exit buttons associated
with each door to the ATS125x inputs.
Any zone used for DOTL (Door Open Too Long) cannot have
any wiring connected.
Each unit is assigned an address and is polled in sequence by
the ATS125x on each loop. Remote units can be located
anywhere up to 1.5 km from the ATS125x. Each loop must
have termination on both ends.
Table 4: ATS1190 wiring
12V Red
0V Black
Connection door contact and Request-to-Exit button
Figure 8 legend
Item Description
(1) Door contact
(2) Request-to-Exit button (push button)
Door lock connection
See Figure 9.
DIP switch settings
DIP switches 1 to 4 (DGP address) are used to identify this
DGP to the Advisor Master control panel, i.e. Assign the DGP
address. A four-door DGP can only be addressed, as DGPs 1
to 12. See Figure 4.
DIP switches 5 and 6 are used for zone expansion
configuration.
D+ White
D−
Green
11 / 54