Power Connection - 24 VDC
UDACT Instruction Manual PN 50050:H 09/16/2002
23
Power Connection - 24 VDC
24 VDC filtered, non-resettable power is connected between the Main Power Supply of the FACP and
the UDACT using twisted pair wire.
For complete information on wiring the UDACT to a specific FACP see the appropriate appendix.
Figure 5 Power Connection
Communication Connection
The EIA-485 Serial Interface is connected between the Fire Alarm Control Panel and the UDACT using
twisted pair, shielded cable. Recommended wire size is 12 AWG (3.25mm
2
) to 18 AWG (0.75mm
2
).
For complete information on wiring the UDACT to a specific FACP see the appropriate appendix.
Figure 6 Communication Connection
+24V
GND
RS+
RS–
SHIELD
RS+
Rs–
ACS/TERM
TERM
EARTH
Comm FAILURE
+24V
UDA
CT
-02
.cdr
24 VDC Power
+24V
GND
RS+
RS–
SHIELD
RS+
Rs–
ACS/TERM
TERM
EARTH
Comm FAILURE
+24V
UDA
CT
-0
2.cd
r
EIA-485 Serial
Interface
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