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Technical information
Chapter
4
EFI
8012622/Z098/2016-11-07
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
13
Subject to change without notice
Technical realization
4
Technical realization
EFI is a linear bus system. Up to four devices can be connected to this bus system. The
actual number of devices depends on the related application or product family.
Twisted-pair cable with a characteristic impedance of 108 … 132 Ω is used as the bus
medium (see also chapter 6 “Technical specifications” on page 54).
Fig. 10: Safety controller with
ESPE connected via two EFI
strings