Fig. 7-5:
STO function with single-channel wiring and active safety unit
If the wiring (as illustrated above) between the active safety unit and
connector XG41 of the "T0 option" is to be a single-channel wiring, the wiring
has to be implemented as a "safe wiring". For this purpose, the following fault
exclusions have to be made:
●
Short circuits with other potentials
●
Short circuit with 24 V
●
Short circuit with ground
See also EN ISO 13849-2:2012, table D.4
In the case of single-channel wiring between the active safety unit and
connector XG41 of the "T0 option", the OSSD output has to be designed with
"serial redundancy" according to SIL3.
ctrlX SAFETY "Safe Torque Off" Safety Option in ctrlX DRIVE
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Examples of application
R911383774_Edition 03 Bosch Rexroth AG
