Chapter 9
1
) The voltage must not exceed or fall below the limit values.
2
) In conformity with EN 60 204, external voltage supply for the devices must be ca-
pable of bridging a short power interruption of 20 ms. Suitable power supplies can be
obtained from SICK as accessories (Siemens Series 6 EP 1).
8 008 631/P134/20-12-04 © SICK AG • Safety Systems • Germany • All rights reserved
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Technical Data
Operating Instructions
WSU/WEU 26/2