Figure 41. Elevator Restriction Controller Board Wiring - Mircom TX3 Series Installation And Operation Manual

6.3.6 RS-485
Figure 41 shows the RS-485 elevator restriction unit wiring.
Input
- S +
USB

Figure 41. Elevator Restriction Controller Board Wiring

Version 1.6 Telephone Access System Installation and Operation Manual
LT-969 Copyright 2012
16 VAC
Output
IN
- S +
Twisted Shield Pair
18 AWG
18 AWG
Twisted Shield Pair
Elevator Restriction Unit Installation and Configuration
PS-4P Transformer
(located in electrical room)
18 AWG
Daisy chain one to one
connection (+ to +, S
to S and - to -) to next
RS-485
DO NOT T-TAP
85 (112)