Digital Monitoring Products XR500 Series Installation Guide
14
INSTALLATION
Bell Output
7.1 Terminals 5 and 6
Terminal 5 supplies positive 12 Vdc to power alarm bells or horns. This output can be steady, pulsed, or temporal
depending upon the Bell Action specied 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 Notication Appliance section for a list of approved notication appliances and the Wiring Diagrams for
connections.
Keypad Bus
8.1 Description
XR500 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 XR500 Series. In addition to DMP LCD keypads, you can also
connect any combination of zone expansion modules to the data bus. Refer to the specic device installation sheet
for the maximum number of Keypad Bus devices.
Refer to the section titled LX-Bus for complete information about the LX-Bus 4-pin header and expansion slot.
Note: Do not use shielded wire for LX-Bus/Keypad Bus circuits.
8.2 Terminal 7 - RED
This terminal supplies positive 12 Vdc 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 re 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 J8 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 OVC LED
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 OVC is located above Outputs 1 and 2 on the panel and turns a steady Red
when lit. When the OVC LED lights Red, the LX-Bus(es) and Keypad bus are shut down.
Smoke and Glassbreak Detector Output
9.1 Terminals 11 and 12
Terminal 11 supplies positive 12 Vdc Regulated to power 4-wire smoke detectors and other powered devices. This
output can be turned o by the user for 5 seconds using the Sensor Reset User Menu option to allow latched devices
to reset. Terminal 12 is the ground reference for terminal 11.
9.2 Current Rating
The Output current from terminal 11 is shared with terminals 7, 25, and 27.
The total current draw of all devices powered from the panel must be included with terminal 11
calculations and must not exceed the maximum output rating.
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