Aiphone GT SYSTEM Installation Manual page 29

Put each piece of wiring in a separate sheath as shown in the diagram below.
Video bus control unit
GT-VBC
1P
A1 B1
NP
A2 B2
1P
A1 B1
NP
A2 B2
1P
A1 B1
NP
A2 B2
EXP
STD
+ -
SW2
PS24
AC
Bus control unit
GT-BC
+ -
R1 R2
4 3 2 1
8 7 6 5
DP
After all units are connected, make sure
to refer to [5 SETTINGS (COMMON
AREA)] for setting.
PS24
230 V AC
N
L
IN 230V~ 50/60Hz NL
2A - +
-
+
100V - 240V -
24 V DC2A
50/60 Hz
Sub trunk line system (1) A
Trunk line #1
Each
residence
Each
residence
Each
residence
Each
residence
Trunk line #2
Trunk line #6
1P
NP
1P
NP
Trunk line #2
1P
NP
Trunk line #3
Trunk line #4
1P
NP
1P
NP
Trunk line #5
Trunk line #6
1P
NP
Sub trunk line system (1) B
Sub trunk line system (2) A
+ -
Sub trunk line system (2) B
24V DC
2 A
Homerun wiring
Each
4-way video
residence
junction unit
Each
residence
Each
residence
Each
residence
- 29 -
Trunk line #2 Trunk line
#3 to #6
Station-to-station
wiring
Each
residence
Each
residence
Each
residence
Each
residence