OPERATING INSTRUCTIONS AND DATA SHEET
FOR SAFETY CONTROLLER REA3
Safety switch REA3
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Date:
17.08.2017
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Page 1 of 12
Variotech GmbH, Gewerbeweg 5, 2230 Gänserndorf, Tel +43 2282 60310, http://variotech.com
Variotech GmbH, Gewerbeweg 5, 2230 Gänserndorf, Tel +43 2282 60310, http://variotech.com
Operating Manual
REA3 Version 1.2
REA3 Safety switch conforming to
EN81-20 5.6.7 “UCM” for
“Prevention of unintended travel
of a lift”
General information:
The safety switch REA3 is intended for use in safety circuits on a lift.
It consists of a fail-safe control module and corresponding sensors and/or magnetic switches.
The control for the brake element of the protective device is incorporated in the control module.
However, the brake element of the protective device itself is not part of this safety switch and/or
description and must be provided on the lift system by the customer.
Devices that have been tested according to the regulations of EN81, UCM and can bring the lift to a
standstill within the prescribed distance are used as the braking element of the protective unit.
Brief description:
The safety switch REA3 recognises unintended travel of the cabin when the doors are open and
switches off safely in case of an error.
Advantages and characteristics:
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Automatic adjustment to the applied safety circuit voltage in a wide range from 48VAC to
230VAC. (24VDC – 230VDC)
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Both magnetic switches are monitored for errors – when closing and opening.
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The opening of the switch contact of the reset button is monitored.
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The relevant safety circuit is tested with each status change.
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Display of all important functions with 5 green LEDs
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A red LED blinks in case of an error.
