7.3.2 Mixed Operation of Optional Safety Technology Modules "L2" and
"L3"/"L4" at a Passive Safety Unit
Dual-Channel Selection of
"L3"/"L4" Option
When a safety zone is
to be implemented, in which drives with optional safety
technology modules "L2" and "L3"/"L4" at a passive safety unit are
integrated, the axes must be interconnected as follows; in this case, the dual-
channel control of the "L3"/"L4" option must be used:
Fig. 7-20: Mixed Operation of the Safety Options "L2" and "L3"/"L4" via Safety
Switching Device (Passive Safety Unit)
The circuit illustrated above makes the following demands on the passive
safety unit which is used:
● No more than 15 axes with the optional safety technology modules
"L2"/"L3"/"L4" may be combined in a safety zone.
● The two outputs of the passive safety unit, which are used to control the
"L3"/"L4" options, must meet the requirements of the SIL or
Performance Level to be achieved.
Bosch Rexroth AG DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
80/149
Examples of application
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
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