Elevator Restriction Unit Overview; Figure 6. Lobby Control Unit With Elevator Restriction - Mircom TX3 Series Installation Manual

For example, Resident 1 is configured for ERU 1 and floor 5. When Resident 1 is
granted access, she must call Cab A; the other cabs do not work. Then she must
enter the cab and press the button for floor 5 within the configured amount of
time. The minimum time is 5 seconds and the maximum is 600 seconds. This
timer starts when the system grants the resident access. This means that the timer
must be long enough for the elevator cab to descend from the top floor to the
lobby, and for the resident to enter the cab and press the button. The distance
from the access point to the cab might also be a consideration for the timer.
See LT-995 for instructions on how to configure a telephone access system.
1.7

Elevator Restriction Unit Overview

The Elevator Restriction Unit limits building accessibility by granting visitor
access only to the destination floor. Figure 6 shows a Lobby Control Unit with an
Elevator Restriction Unit.
Elevator Restriction System Installation and Operation Manual
Version 1.2
LT-9940 Copyright 2018
Telephone outlet
Central office line
Line1
Lobby Control Unit
(Node Addr 1)
1 2 3
4 5 6
7 8 9
* 0 # i
RS-485 from
previous unit
Figure 6. Lobby Control Unit with Elevator Restriction
Elevator
Restriction Unit
(Node Addr 2)
Elevator
Restriction
Unit
RS-485
bus
RS-485 to
next unit
Introduction
Relays to
Elevator
Control
13