Lobby Control Unit Wiring; Figure 26 Lobby Control Unit Wiring - Mircom TX3 Series Installation And Operation Manual

3.7

Lobby Control Unit Wiring

All units use the PS-4P transformer for the power supply. All wiring is a
maximum length of 1000 ft. The door strike power supply depends on the door
strike power requirements.
Figure 26 shows a typical wiring arrangement for the Lobby Control Unit.
Line1
T/R
1 2 3
4 5 6
7 8 9
* 0 # i
Figure 26. Lobby Control Unit Wiring
Note:
TX3 Telephone Access System Installation and Operation Manual
Version 5.4
LT-969 Copyright 2019
2008/16
NSL Expander
Unit
Expansion
cables
TX3-NSL-8M
NSL Control
Unit
T/R T/R
Power Power
transformer transformer
16VAC/40VA AC or DC Door
PS-4 or PS-4P strike supply
Install all transformers outside the Lobby Control Unit enclosure.
CA-71A
Or
RJ-71C
Blocks
Resident's
Telephone
9106/
9406
Cables
Telephone
company
Electrical room
Power
transformer
16VAC/40VA
PS-4 or PS-4P
TX3 System
120 VAC
60HZ
47