Digital Monitoring Products
XR150/XR550 Series Canadian Installation Guide
14
INSTALLATION
Bell Output
7.1
Terminals 5 and 6
Terminal 5 supplies positive 12VDC to power alarm bells or horns. This output can be steady, pulsed, or temporal
depending upon the Bell Action specified in Bell Options. Terminal 6 is the ground reference for the bell circuit. This
supervised output detects 1k Ohms or less as normal. The indicating appliance can supply this resistance. If using a
horn or siren, a 1k Ohm 1/2 W EOL resistor (provided) should be added across the bell circuit to provide supervision.
See the Notification Appliance section for a list of approved notification appliances and the Wiring Diagrams for
connections.
Keypad Bus
8.1 Description
XR150/XR550 Series panel terminals 7, 8, 9, and 10 are for the keypad bus. You can connect up to sixteen supervised
keypads and multiple unsupervised keypads to the XR150/XR550 Series. In addition to DMP LCD keypads, you can also
connect any combination of zone expansion modules to the data bus up to 16 devices.
Note:
Do not use shielded wire for LX-Bus/Keypad Bus circuits.
8.2
Terminal 7 - RED
This terminal supplies positive 12VDC Regulated to power DMP LCD keypads and zone expansion modules. Terminal 7
also supplies power for any auxiliary device. The ground reference for terminal 7 is terminal 10.
The output current is shared with the smoke power output on terminal 11 and Zones 9 and 10. Current draw for all
connected devices must not exceed the panel maximum current rating. See Power Supply in the Compliance section
for maximum current in a fire listed application.
8.3
Terminal 8 - YELLOW
Terminal 8 receives data from keypads and zone expansion modules. It cannot be used for any other purpose.
8.4
Terminal 9 - GREEN
Terminal 9 transmits data to keypads and zone expansion modules. It cannot be used for any other purpose.
8.5
Terminal 10 - BLACK
Terminal 10 is the ground reference for DMP LCD keypads, zone expansion modules, and all auxiliary devices being
powered by terminal 7.
8.6
J8 Programming Connection
A 4-pin header (J8) is provided to connect a keypad when using a DMP Model 330 Programming Cable. This provides a
quick and easy connection for panel programming.
You may also use the Programming Header to connect Keypad Bus devices. This is an alternative to connecting
keypad bus devices to terminals 7, 8, 9, and 10.
8.7
Keypad Bus LEDs
The two LEDs, located above the J8 PROG connector, indicate data transmission and receipt. The left LED flashes
green to indicate the panel is transmitting keypad bus data. The right LED flashes yellow to indicate the panel is
receiving keypad bus data. See Figure 5.
8.8
OVC LED(s)
The Overcurrent LED (OVC) lights red when the devices connected to the Keypad Bus and LX-Bus(es) draw more
current than the panel is rated for. The LED(s) turn a steady red when lit. When the OVC LED(s) light red, the
appropriate LX-Bus(es) and Keypad bus are shut down.
• The OVC LED located to the left of the 893A connector indicates overcurrent for the Keypad Bus (Terminals 7-10
and PROG header), XBUS, and LX500-LX700.
• The OVC LED to the right of the J24 Cell Module connector indicates overcurrent for LX800-LX900.
