Supervised Alarm / Relay / Power Expansion Unit 16
MODULAR CABLE
Modular Cable
The Modular Cable carries Alarm Data to the Access Control
Panel and Relay Activation commands from the Access Con-
trol Panel. The modest power requirements of the Logic and
Alarm Circuits are provided from the Access Control Panel
through this cable. The relay coil power is supplied through
the 12V IN connector just above the Modular Jack on the right
side of the board.
The first Alarm/Relay Board must connect to the Access Con-
trol Panel using the Jack on the right side of the board. A
Pass-through connector is on the left side of the board if addi-
tional boards are used. Always connect the cable between the
left of one board to the right of the next board. If this rule is
not followed, the product will not be damaged, but the system
will not work correctly.
The Modular Cable must be run through metal conduit be-
tween the system enclosures. The total length must not exceed
9 feet (2.74 meters).
When removing the cable, note that the latching lever is on the
side near the printed circuit board.
Figure 10 - Modular Cable
