Circuits; Power Requirements; Channels/Inputs; Primary And Secondary Phone Lines - Fire-Lite 411UD Manual

Circuits

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Channels/Inputs

- TB2 Terminals 1 through 8
Programmable Channels 1 through 4
Power-limited circuitry
Fully supervised
Operation: All channels NFPA Style B (Class B). Requires Normally Open contact to trigger
Normal Operating Voltage: 12 VDC
Maximum Line Resistance: 100 ohms per channel
Alarm Current: 3.34 mA
End-Of-Line Resistor: 2.2K ohms, ½ watt (P/N 27070)
Short Circuit Current: 3.8 mA per channel/input
One Form-C Relay - TB1 Terminals 1 through 3
Contact rating: 2.0 amps @ 30 VDC (resistive)
1.3 Circuits
The 411UD circuit board utilizes surface mount technology and contains a MicroController Unit (MCU), dual modu-
lar phone line jacks, piezo sounder, piezo silence switch, one programmable relay and two connectors for input, out-
put and power wiring.

1.3.1 Power Requirements

Voltage for the digital communicator may be a power-limited, filtered, nonresettable nominal 12 VDC [11.2 to
12.4 VDC (UL tested range: -15%, +10%)] or nominal 24 VDC [21.3 to 24.0 VDC (UL tested range: -15%,
+10%)]. Jumper J4 is used to select the power source.
1.3.2 Channels/Inputs
Four input channels are provided on the 411UD digital communicator which are used for connection to the control
panel being monitored. Each input can be programmed to monitor the control panel for:
• fire alarm activation
• trouble activation
• fire supervisory activation
• AC loss activation
Each input channel is configured as a Class B circuit and must be wired to a Normally Open contact.

1.3.3 Primary and Secondary Phone Lines

Modular jacks are used to interface the primary and secondary phone lines to the public telephone network.

1.3.4 Earth Ground

Connect a separate earth ground wire to TB1 terminal 6 for transient protection.
Note: If zero ohms impedance exists between the 411UD circuitry and earth ground, a ground fault will be indi-
cated at the host FACP.
1. Channels/inputs do not support 2-wire smoke detectors.
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411UD Document #50759 Rev. E 12/09/2008 P/N 50759:E