Supervised Alarm / Relay / Power Expansion Unit 14
Cable and Wiring Categories
The wiring and cabling for the Expansion Unit are divided into
three categories:
Mains Power Cables and Wiring
This category contains Mains AC power cables servicing the
Expansion Unit Panel. The connection to the Mains must be
carried out by qualified personnel.
Low-Voltage Power and Accessory Relay Devices
12 or 5 volt Power, any accessory relay controlled devices
connected to the Panel, and any 12 volt Accessories receiving
battery-backed power from the panel. (These are power-
limited circuits, and normally do not require a licensed electri-
cian to complete this work). The wiring inside the enclosure
must be kept at least 1/4" away from the high-power (black
and white pair) wires between the AC Terminal Block and the
Power Supply, as well as the Red and Black Leads between the
Battery and the PC Board.
Communication Cables
This category contains all the communication cabling between
the Expansion Unit and all communication equipment, all
alarm circuits, and all card reader devices. (These are power-
limited circuits, and normally do not require a licensed electri-
cian to complete this work). The wiring inside
the enclosure must be kept at least 1/4" away
from the high-power wires, as described in the
paragraph above.
NOTE:
For proper operation
of the Expansion Unit, route EACH category of
cabling in SEPARATE conduit or bundle (i.e.,
DO NOT mix alarm and communication cables in the same
conduit as relay and power cables
). Plenum-Rated cabling
may be required in certain installations. See Important Safety
Information, page 6.
Incoming Power Conduit Knockout
The Expansion Unit requires the Mains Power Cable be con-
nected to the AC Input Terminal Block. (see page 15). The
power cabling is delivered to the Expansion Unit through a
knockout located on the lower center of the left side cabinet
wall (see Figure 8). The 3/4 inch knockout accepts EIA stan-
dard conduit connectors.
NOTE:
This system must be installed within the
protected premise in accordance with the National
Electrical Code (NFPA70), local codes, and the
authorities having jurisdiction.
Accessory Conduit Knockouts
All cabling for the Expansion Unit is routed through EIA stan-
dard 3/4-inch knockouts located on the left and right sides of
the cabinet (see Figure 8). On the top of the enclosure, three-
size knockouts are available.
Grounding Accessory Drain and Shield Wires
Ensure electromagnetic compatibility and reliable performance
by keeping all accessory drain and shield wires as short as pos-
sible.
All accessory drain and shield wires connect to ground posts
mounted along the knockout strips on both sides of the Expan-
sion Unit cabinet (see Figure 8).
The following procedures assure proper installation of all drain
and shield wires.
•
Carefully remove the cable jacket after the cable enters the
Expansion Unit cabinet.
•
Place the drain wires under the ground post screw. Trim
as needed.
•
Verify a good connection and tighten the ground post nut.
•
Connect the accessory wires to the appropriate terminal
strip on the Expansion Unit circuit board.
INSTALLATION
Figure 8 - Cabling Conduit Knockouts
Accessory Wire Drain
and Shield Ground
Posts
Incoming Power
Knockout
Knockouts for 3/4"
Conduit Connectors
Knockouts for 3/4"
Conduit Connectors
Knockouts for 1/2", 3/4" or
1" Conduit Connectors
