94 (119) Telephone Access System Installation and Operation Manual Version 3.7
LT-969 Copyright January 2017
Elevator Restriction Unit Installation and Configuration
6.2 Elevator Restriction Units
The Elevator Restriction Unit limits building accessibility by granting visitor
access only to the destination floor. Figure 50 shows a Lobby Control Unit with
an Elevator Restriction Unit.
Figure 50. Lobby Control Unit with Elevator Restriction
The elevator restriction unit consists of the main elevator restriction controller
board and the elevator backplane. Up to eight 2012E Elevator Relay Boards may
be installed, allowing for 96 elevator floors for access in this enclosure. See
Figure 51.
The Elevator Restriction Unit performs the following functions:
• Provides time dependent relay contacts which can be used for either
elevator or video control.
• User set timer for relay contacts for each Elevator Restriction Unit at each
Lobby Control Unit.
1 2 3
4 5 6
7 8 9
* 0 # i
Line1
Telephone outlet
Central office line
Elevator
Restriction
Unit
RS-485
bus
RS-485 from
previous unit
RS-485 to
next unit
Relays to
Elevator
Control
Lobby Control Unit
(Node Addr 1)
Elevator
Restriction Unit
(Node Addr 2)
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