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NFS2-640, NFS-320, (UL 9th) and NFS-640 (UL 8th)
Below is an internal installation of a UDACT with NFS2-640/NFS-320:
CPU2-640/
CPU-320 TB10
24VDC
nonresettable
power
Below is a remote installation of a UDACT with an NFS-640:
CPU-640 TB7
24VDC
nonresettable
power
NFS-640 in
Separate Cabinet
90
Ferrite Core
0 1
11
CPU2-640/
CPU-320 TB11
DO NOT USE
Figure F.2 UDACT and NFS2-640/NFS-320 in the Same Cabinet
Ferrite Cores
+
-
CPU-640
TB13
DO NOT USE
Figure F.3 UDACT and NFS-640 in Separate Cabinets
To Phone Lines
(supervised)
+24V
GND
RS+
ACS/TERM
RS–
SHIELD
RS+
TERM
Rs–
To Phone Lines
(supervised)
ABS-8RB or UBS-1
+24V
GND
RS+
ACS/TERM
RS–
SHIELD
RS+
TERM
Rs–
UDACT Instruction Manual — P/N 50050:M 12/18/2009
Wiring
Solid Earth
Ground
Connection
EARTH
Comm FAILURE
+24V
Solid Earth
Ground
Connection
EARTH
Comm FAILURE
+24V
UDACT
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