Chapter
5
Operating Instructions
miniTwin2
42
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
8013482/YT85/2016-02-23
Subject to change without notice
Electrical installation
The two outputs are protected against short-circuits to 24 V DC and 0 V. When the light
path is clear, the signal level on the outputs is HIGH DC (at potential), when the light
path is interrupted or there is a device fault the outputs are LOW DC.
The miniTwin2 safety light curtain meets the interference suppression requirements
(EMC) for industrial use (interference suppression class A). When used in residential
areas it can cause interference.
To ensure full electromagnetic compatibility (EMC), functional earth (FE) must be
connected.
To meet the requirements of the relevant product standards (e.g. IEC 61 496
A
1), the
external voltage supply for the devices (SELV) must be able to bridge a brief mains
failure of 20 ms. The power supply must provide safe mains isolation (SELV/PELV) and
have a current limit of max. 8 A. Power supplies according to EN 60 204
A
1 satisfy this
requirement. Suitable power supplies are available as accessories from SICK (see
section 10.6 “Accessories” on page 77).
The device connection and the extension connection (see Fig. 32 or Fig. 35) are only
allowed to be connected when the device is electrically isolated.
Notes
