Telephone Access System And New Elevator Restriction Firmware; Figure 4. Elevator Restriction Units (Eru) And A Telephone Access Controller - Mircom TX3 Series Installation Manual

1.5 Telephone Access System and New Elevator
Restriction Firmware
Figure 4 is a conceptual diagram of an example system with three elevator cabs
and a Telephone Access Controller. There is an elevator restriction unit (ERU)
restricting each cab, for a total of three elevator restriction units.
Floors are grouped into floor groups. For example, consider a 4-floor building
where residents are allowed access only to the floor they live on and the ground
floor. There are 3 Floor Groups:
•
•
•
Each resident is assigned to one of these Floor Groups depending on which floor
she lives on. Each resident is also assigned one or more ERUs.
When the system grants a resident access (or when a resident grants a visitor
access), the Telephone Access Controller activates the Floor Group assigned to
that resident on the ERUs assigned to that resident for a configurable amount of
time.
Elevator Restriction System Installation and Operation Manual
Version 1.2
LT-9940 Copyright 2018
controls
ERU 1 ERU 2
Figure 4. Elevator Restriction Units (ERU) and a Telephone
Access Controller
Floor Group 1: Floors 1 and 2
Floor Group 2: Floors 1 and 3
Floor Group 3: Floors 1 and 4
Telephone Access
Controller
1 2 3
4 5 6
7 8 9
* 0 #
controls
controls
ERU 3
Introduction
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