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 5 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
Technical specifications:
Connection: plug-in terminals, non-interchangeable, coded.
The terminals are designed for a maximum cable cross-section of 1 mm² with casing or 1.5 mm²
without casing.
The maximum cable length for the safety circuit tap is limited to 200m in order to eliminate potential
malfunctions due to coupling.
If a cable length > 200m is required, it must be provided with additional suitable protective measures
by the customer.
There are no other length limitations on cables.
Requirements:
EN 81–20 / 50
Ambient operating temperature:
-5°C to + 55°C
Air humidity (non-condensing)
< 95 %
Storage temperature:
– 25°C to + 70°C
Dimensions:
10cm x 12cm x height 5cm
Weight:
300g
Deactivation time / system response time:
15ms
Ambient conditions:
The REA3 safety switch is designed to ensure that it has a minimal negative impact on the
environment. It does not emit any pollutants, does not contain any substances that are harmful to the
environment and only consumes very little energy during operation.
Usage conditions:
The REA3 safety switch must only be used when the following requirements are fulfilled:
a.) The brake element of the protective device must be type-tested.
b.) Suitable self-monitoring of the ordinary function of the UCM brake element of the protective device
must be provided. This function cannot be carried out by the REA3 safety switch.
Installation / fastening:
Installation of the safety switch should take place close to the lift controller.
The safety switch is delivered in a top-hat rail housing.
An unoccupied top-hat rail width of approx. 10cm is required for installation.
If there is no space available in the switch cabinet, the REA3 safety switch can also be installed in an
industrial plastic housing (IP65) at the factory.
Installation must take place in a housing with a minimum protection rating of IP4x. Installation of the
magnetic switches and magnetic tape must be sturdy enough that no different switching distances can
arise during operation due to mechanical influences (vibrations, etc.). It must be ensured that
interruptions and short-circuits are avoided in the wiring of the magnetic switches.
Connections and terminal designation:
Terminals 1, 2, 3 and 4:
Connection for 2 door zone switches (magnetic switch or equivalent switches/contacts) according to
the circuit diagram.
Magnetic tape is used for each switch to define the door zone at each stop.
The length of the magnetic tape should correspond to the unlocking zone of the doors and thus be
approx. 20cm.
