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Circuits
Channels/Inputs
Programmable Channels 1 through 3 (411) or 4 (411UD)
Power-limited circuitry
Operation: All channels NFPA Style B (Class B). Requires Normally Open contact to trigger
Normal Operating Voltage: 12 VDC
Alarm Current: 2.68 mA
End-Of-Line Resistor: 2.2K ohms, ½ watt (P/N 27070)
Short Circuit Current: 3.9 mA per channel/input
Restricted to 20 feet (6 m) in conduit and in the same room
One Form-C Relay - TB1 Terminals 1 through 3
Contact rating: 2.0 amps @ 30 VDC (resistive)
Non-supervised
1.3 Circuits
The 411/411UD circuit board utilizes surface mount technology and contains a MicroController
Unit (MCU), dual modular phone line jacks, piezo sounder, piezo silence switch, one programma-
ble relay and two connectors for input, output and power wiring.
1.3.1 Power Requirements
Voltage for the digital communicator may be a power-limited, filtered, nonresettable nominal 12
VDC (must be withing 9.8 to 14 VDC) or nominal 24 VDC (must be within 17 to 28 VDC).
Jumper J4 is used to select the power source. For 12VDC power, short pins 1 and 2. For 24 VDC,
short pins 2 and 3 as shown below.
1.3.2 Channels/Inputs
Three (411) or four (411UD) input channels are provided on the 411/411UD digital communicator
which are used for connection to the control panel being monitored. Each input can be pro-
grammed 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 con-
tact.
1. Channels/inputs do not support 2-wire smoke detectors.
411 & 411UD Manual — P/N LS10105-000GE-E:A 1/29/2014
1
- TB2 Terminals 1 through 6 (411) or 8 (411UD)
3 2 1
J4- jumpered
pins 1 and 2
3 2 1
J4- jumpered
pins 2 and 3
Figure 1.3 J4 Jumper Selection
12V operation
24V operation
Product Description
11
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