7.1.2 STO and SBC functions ("L4" only) when selected by means of active
safety units
Dual-channel wiring
Plus-plus-switching safety unit
When the safety function is
selected by means of a plus-plus-switching safety
unit, the following errors must be detected by the OSSD outputs:
● Short circuit of the selection signals with 24 V
● Short circuit between the two selection signals
Fig. 7-3: STO function and SBC function (only IndraDrive Cs with "L4") with ac‐
tive safety unit (plus-plus-switching outputs)
Plus-minus-switching safety unit
When the safety function is selected by means of a plus-minus-switching
safety unit, the following errors must be detected by the OSSD outputs:
● Short circuit of the plus-switching selection signal against 24 V
● Short circuit of the minus-switching selection signal against 0 V
DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
Bosch Rexroth AG 61/149
Examples of application
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
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