Product description
EL690014 Version: 2.2.0
3 Product description
3.1 EL6900 - TwinSAFE logic terminal
The TwinSAFE logic terminal is the link unit between the TwinSAFE input and output terminals.
The EL6900 meets the requirements of IEC 61508:2010 SIL3, DIN EN ISO 13849-1:2006 (Cat4, PL e),
NRTL, UL508, UL1998 and UL991.
The TwinSAFE terminal has the typical design of an EtherCAT terminal.
Fig.4: EL6900 - TwinSAFE logic terminal
3.2 Intended use
WARNING
Caution - Risk of injury!
TwinSAFE components may only be used for the purposes described below!
WARNING
System limits
The TÜV SÜD certificate applies to the EL6900, the function blocks available in it, the doc-
umentation and the engineering tool. The permitted engineering tool is TwinCAT with the
"TwinSAFE Verifier", the TwinSAFE Loader or "CODESYS Safety for EtherCAT Safety
Module". Any deviations from the procedures or tools, particularly externally generated xml
files for TwinSAFE import or externally generated automatic project creation procedures,
are not covered by the certificate.
The TwinSAFE terminals expand the application range of Beckhoff Bus Terminal system with functions that
enable them to be used for machine safety applications. The TwinSAFE terminals are designed for machine
safety functions and directly associated industrial automation tasks. They are therefore only approved for
applications with a defined fail-safe state. This safe state is the wattless state. Fail-safety according to the
relevant standards is required.
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