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Document # 50049 Rev D 5/2/97 P/N 50049:D
Notes:
1) This arrangement allows use of the UDACT-F simultaneously with the RTM-8F module.
2) Ferrite cores are recommended for all applications.
3) Recommended wire is 12 AWG to 18 AWG twisted pair.
4) Shielded wire is not required (unless mandated by local AHJ).
If shielded wire is used, connect only one end of shield:
a) shield may be connected to cabinet (earth ground) at fire alarm panel, or
b) shield may be connected to TB1 Terminal 5 (Shield) at UDACT-F as shown in
Figure 2-3.
NOTE: The shield end that is not connected should be insulated to prevent
accidental grounding. Do not connect both ends of shield under any circumstance
since a ground fault may result.
5) Conduit is recommended for external wire runs. Consult local building codes.
6) Connect Ground Strap (supplied with ABS-8RF enclosure) from Earth Ground terminal on
UDACT-F to a solid building earth ground. Conduit alone will not provide a reliable earth ground.
7) UDACT-F may be located up to 6000 feet away from the host control panel.
8) Refer to Specifications for power requirements.
MS-9200
UDACT-F in ABS-8RF
(shown with cover removed)
Install 120 ohm EOL
resistor (P/N: 71244)
on TB1 terminals 3
& 4 if last or only
device on EIA-485
line.
MS-9200
Cabinet
Ferrite
Cores
P/N 29090
Figure 2-3: External UDACT-F Mounting in ABS-8RF
Supervised and Power-limited EIA-485 and power connections
To
Phone
Lines
(Supervised)
Solid
Earth
Ground
Connection
+24 VDC
Nonresettable
Power
Do Not Use
these terminals
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