Circuits; Channels/Inputs; Notification Appliance Circuit; Output Circuits - Fire-Lite 411UDAC Installation, Programming, Troubleshooting And Operating Instruction Manual

Circuits

1.3 Circuits
The 411UDAC circuit board utilizes surface mount technology and contains a MicroController Unit (MCU), dual
modular phone line jacks, piezo sounder, two sockets for optional programmable relays and connectors for input, out-
put and power wiring. A piezo silence switch and reset switch are provided on the membrane panel which plugs into
connector J7 on the main circuit board.

1.3.1 Channels/Inputs

Four input channels are provided on the 411UDAC. The 411UDAC can be used to monitor a host FACP (Fire
Alarm Control Panel) in Slave Mode or as a stand-alone FAC (Fire Alarm Communicator). Each input can be
programmed to monitor the following conditions:
• fire alarm activation
• 2-wire smoke (channels 1 & 3 only)
• pull station
• normally open contact device
• waterflow
• trouble activation
• fire supervisory activation

1.3.2 Notification Appliance Circuit

One Style B NAC (Notification Appliance Circuit) requiring a 2.2K ohm End-of-Line resistor. This NAC can
only be used to supplement host panel NACs.

1.3.3 Output Circuits

• Modular jacks are used to interface the primary and secondary phone lines to the public telephone network.
Phone lines are fully supervised at all times (if communication is enabled).
• 12 volt resettable special application power output (200 mA)
• 12 volt battery charger will charge up to 14 AH batteries

1.3.4 Auxiliary Relays

Two dry Form-C relays (P/N: 411RK), with contacts rated for 2.0 amps @ 30 VDC (resistive) or 0.5 amps @ 30
VAC (resistive), are installed on the main circuit board. Each relay is programmable for:
Alarm
Fire supervisory - latching
Fire supervisory - autoresettable
Host panel trouble
DACT trouble
Total communications failure

1.3.5 Earth Ground

Connect a separate earth ground wire to ground stud in backbox for transient protection (refer to Figure 2-4 on
page 21 for location of stud).
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411UDAC Document #51073 Rev. D 12/09/2008 P/N 51073:D