TX3 System
Version 5.4 TX3 Telephone Access System Installation and Operation Manual 41
LT-969 Copyright 2019
Figure 19 shows the various inputs to the panels.
Figure 19. Single Entrance System Wiring
3.3 Dual Lobby Control Units
Figure 20 shows a dual entry application for either an NSL type or ADC
connection type. The phone line from either the NSL control unit or an ADC
dedicated phone line is shared by both Lobby Control Units.
18 AWG 18 AWG
1 2 3
4 5 6
7 8 9
§
* 0 # i
Door
Strike AC
or DC
Aux Door
Form C relay
contact
General
purpose outpu
(Form C relay
contact)
1 pair
18 AWG
1 pair
18 AWG
3 wires
22 AWG
3 wires
22 AWG
1 pair
18 AWG
12 VDC/0.5A
Aux power
LED Lamp
Supply (only
for paper
directory )
1 pair
18 AWG
Postal
Lock
Main Door
Sense
ver-ride
1 pair
22 AWG
1 pair
22 AWG
1 pair
22 AWG
General
Purpose
Input 1
General
Purpose
Input 2
1 pair
22 AWG
1 pair
22 AWG
STUPTUOSTUPNI
Lobby
Control Unit
Electrical room
120 VAC
Power
Transformer
16VAC/40VA
PS-4 or PS-4P
NSL
Control
Unit
OR
Telephone outlet
Centrl office line
T/R
T/R
Power
Transformer
AC or DC Door
Strike Supply
Line1
1 pair
Telephone
wire
Electrical room
General
purpose output 2
(Form C relay
contact)
RS-485