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Wiring 1
Add-on selector Sub station
TC-20G
20-call add-on selector
TC-40G
40-call add-on selector
TC-40GS
W/add’l 20-/40-call expansion
900m / 1.0mma 480m / 1.0mma 900m / 1.0mma
l Run 2 parallel wires per TB-SE. Use any E terminal for max. three TB-SE’s.
l Do not parallel TB-SE sub wires, or door station wires (in dual-TC-M system).
TB-SE
Sub station
Power supply
PS-1820S
PS-1820UL
PS-1820
m P.104
2
3
2
1
2
1
2
1
2
1
E
2
E
3
E
2 2
E
1
2
1
2
4
E
1
2
1
2
5
E
6
E
1
2
7
E
8
E
E
M
C
9
10
E
+
-
TR S
S
1
E
1
E
1
2
2
E
1
2
3
E
1
2
4
E
1
2
5
E
1
2
6
E
1
2
7
TB-SE
TC-M
TB-SE
TC-M
TB-SE
2
2
TB-SE
U
U
TB-SE
2
2
2
2
2
2
2
E
M
C
8
E
2
2
E
1
2 E
9
2
9.TB-SE 10
E
TB-AD1
12V
+
12V -
S TR
S
TB-AD1
1
E
IER-2 IER-2
Wiring 2
TB-AD1
TB-AD1
IER-2
Call extension
m P.101
TAR-3
External signaling
relay
m P.102
IF-DA TB-AD1 TC-20M
2
5
2
1
2
2
1
2
Lineup
N
+
–
T
R
TB-AD1
IF-DA IF-DA IF-DA
2
19
20
+
–
T
R
5 (x3)
TC-20M
COMMERCIAL & INSTITUTIONAL APPLICATION SYSTEM
84