Elevator Restriction Unit Overview; Figure 6. Lobby Control Unit With Elevator Restriction - Mircom TX3-ER-8 Installation Manual

For example, Resident 1 is configured for ERU 1 and floor 5. When Resident 1
grants a visitor access, the visitor must call Cab A; the other cabs do not work.
Then the visitor 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 visitor 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 visitor 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 TX3 System Configuration and Administration Manual 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
12
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