Telephone Access System And Old Elevator Restriction Firmware; Figure 5. Elevator Restriction Units (Eru) And A Telephone Access - Mircom TX3 Series Installation Manual

For example, Resident 1 is configured for ERU 1, 2 and 3, and for Floor Group 1
(floors 1 and 2). When Resident 1 is granted access, she must call one of the cabs
controlled by ERUs 1, 2 or 3. Then she must enter the cab and press the button for
floor 1 or 2 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.
1.6 Telephone Access System and Old Elevator
Restriction Firmware
Figure 5 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.
restricts
Cab A
Each resident is configured for a specific ERU and a specific floor. When the
system grants a resident access (or when a resident grants a visitor access), the
Telephone Access Controller activates one ERU and one floor on that ERU for a
configurable amount of time.
Elevator Restriction System Installation and Operation Manual
12
LT-9940 Copyright 2018
controls
ERU 1
restricts
Cab B
Figure 5. Elevator Restriction Units (ERU) and a Telephone
Access Controller
Telephone Access
Controller
1 2 3
4 5 6
7 8 9
* 0 #
controls
controls
ERU 2
Cab C
Introduction
ERU 3
restricts
Version 1.2