
Network Controllers Manual
49
Application Drawings
Style 4 (Class B) 20 mA Single Line Wiring with COMM-3S
TB1
TB3
TB2
P3
J3
J4
P1
P2
J1
J2
24V COM EARTH
DATA
IN
DATA
OUT
+
+
+
-
-
[NWC-019.CDR]
[NWC-021.CDR]
F
L
A
S
H
= CP
U CO
M
M
P2
TO "DATA IN"
TERMINALS
OF NEXT SO-20.
TO "DATA OUT"
TERMINALS
OF PREVIOUS
SO-20.
TO CORRESPONDING
TERMINALS OF
PS4/8B WITHIN SAME
ENCLOSURE
COMM-3S INSTALLED IN P3 OF:
CM1(N) w/SO OPTION
CM2(N) w/SO OPTION
RMDP-1N w/SO OPTION
RED STRIPE
1
1
1
2
Supervised and power limited.
SO-20 and COMM-3S installed in common enclosure.
NOTES:
firealarmresources.com