UDACT Instruction Manual — P/N 50050:M 12/18/2009 25
Relay Driver (Auxiliary Output) Connections Installation and Wiring
2.5 Relay Driver (Auxiliary Output) Connections
The UDACT's open collector output on TB3 (Comm Fail), is provided for Communicator Failure
and UDACT trouble. It can be used to drive UL-listed relay MR-101/C or MR-201/C. The output
is rated for 40 mA. The normal condition for the output is Off (de-energized).
Communicator Failure occurs when the maximum number of attempts to reach both central stations
has taken place or when both phone lines are disconnected. UDACT trouble conditions include
loss of telephone line voltage to the primary and/or secondary phone lines, communication failure
to the primary or secondary Central Stations, total communication failure, entry into program, type,
and troubleshoot modes.
Wiring from the UDACT terminal TB3 to the relay must be in the same room, no more than 20 feet
in length, and enclosed in conduit. Wiring from the relay output contacts must remain in the same
room as the UDACT.
When the UDACT is programmed for “Receive Only” (typically this occurs when annunciators are
also used and are set for “Receive/Transmit”), the relay output is used to provide a UDACT trouble
input to the host control panel. For AFP-100, AFP-200, AFP-300, AFP-400, NFS2-640, NFS-640,
NFS-320, NFS2-3030, NFS-3030, and AM2020/AFP1010 applications, use an FMM-1 module to
supervise the relay closure (refer to Figure 2.10 on page 26). Program the custom label field to
read “UDACT Trouble”. For System 500 or System 5000 applications, wire the relay output to the
annunciator trouble input circuit or use the relay to trigger zone trouble.
When the UDACT is programmed for “Receive/Transmit”, EIA-485 supervision and UDACT
trouble status are automatically handled by the host control panel. The relay output may, however,
be used for UDACT communications failure if desired.
Figure 2.9 Relay Driver Connections
0
NO
NO
ON
NC
NC
C
C
18/24
115
230
0
NO
ON
NC
C
18/24
115
230
+24 VDC
Comm FAILURE
EARTH
TB3
+24 VDC
Comm FAILURE
EARTH
TB3
Relay Energized LED
DPDT Contacts
10 Amps @115 VAC
SPDT Contacts
10 Amps @115 VAC
UDACT-04.wmf
Relay Energized LED
UDACT
UDACT
MR-101/C
MR-201/C
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