XR150/XR550 Series Canadian Installation Guide
Digital Monitoring Products
9
INSTALLATION
4.3
Connecting LX-Bus and Keypad Bus Devices
Connections for LX-Bus and Keypads are provided through the J8 (PROG), J14 (LX500), J9 (LX600), J15 (LX700), J17
(LX800), J19 (LX900), and J13 (XBUS) 4-pin headers. Several factors determine the DMP LX-Bus™ and keypad bus
performance characteristics: the wire length and gauge used, the number of devices connected, and the voltage at
each device. When planning an LX-Bus™ and keypad bus installation, keep in mind the following information:
• DMP recommends using 18 or 22-gauge
unshielded
wire for all keypad and LX-Bus circuits. Do not use twisted pair
or shielded wire for LX-Bus and keypad bus data circuits.
• On keypad bus circuits, to maintain auxiliary power integrity when using 22-gauge wire do not exceed 500 feet.
When using 18-gauge wire do not exceed 1,000 feet. To increase the wire length or to add devices, install an
additional power supply that is listed for Fire Protective Signaling, power limited, and regulated (12VDC nominal)
with battery backup.
Note:
Each panel allows a specific number of supervised keypads. Add additional keypads in the unsupervised mode.
Refer to the Keypad Bus section for the specific number of supervised keypads allowed.
• Maximum distance for any one bus circuit (length of wire) is 2,500 feet regardless of the wire gauge. This distance
can be in the form of one long wire run or multiple branches with all wiring totaling no more than 2,500 feet. As
wire distance from the panel increases, DC voltage on the wire decreases. Maximum number of LX-Bus devices on
the first 2,500 foot circuit is 40 devices.
• Maximum voltage drop between the panel (or auxiliary power supply) and any device is 2VDC. If the voltage at any
device is less than the required level, add an auxiliary power supply at the end of the circuit. When voltage is too
low, the devices cannot operate properly.
For additional information refer to the LX-Bus/Keypad Bus Wiring Application Note (LT-2031).
4.4
Wireless Keypad Association
Enable Wireless Keypad Association operation on both the keypad and panel:
1. Access the Installer Options Menu (3577 (INST)).
2. Select RF Survey). The keypad logo LEDs turn on red until association is
successful.
Enable Wireless keypad Association operation in the XR150/XR550 panel:
Reset panel 3 times within 12 seconds. Allow the keypad bus Transmit/Receive
LEDs to turn back on between each reset. For 60 seconds the panel listens for
wireless keypads that are in the Installer Options Menu (3577 CMD) and have
not been programmed, or associated into another panel. Those keypads are
assigned to the first open device position automatically based upon the order in
which they are detected. The keypad logo turns Green to indicate it has been
associated with the panel.
Primary Power Supply
5.1
AC Terminals 1 and 2
Connect the transformer wires to terminals 1 and 2 on the panel. Use no more than 70 ft. of 16 gauge or 40 ft. of 18
gauge wire between the transformer and the XR150/XR550 Series.
Always ground the panel before applying power to any devices:
The XR150/XR550 Series must be
properly grounded before connecting any devices or applying power to the panel. Proper grounding
protects against Electrostatic Discharge (ESD) that can damage system components. See the Earth ground
section.
5.2
Transformer Types
Use Model 327CAN (16.5 Vac 50 VA) plug-in or Model FTA7516 from ATC Frost.
The transformer must be connected to an unswitched 120 Vac 60 Hz electrical outlet with at least .87A of
available current.
Never share the transformer output with any other equipment.
5.3
J12 3-Pin Header for Transformer Types
Place the jumper on the left two pins for a Maximum 2 Amp (Bell+Aux+Smoke+XBUS+LX500-LX900) when using the
Model 327CAN plug-in transformer (default).
Use an ATC Frost FTA7516 transformer and place the jumper on the right two pins for a Maximum, 3 Amps
(Bell+Aux+Smoke+XBUS+LX500-LX900).
Figure 5: Keypad Bus LEDs
