● In the case of IndraDrive Cs, IndraDrive C, IndraDrive M and
IndraDrive ML, the selection can
take place via one channel,
alternatively by means of
– a passive safety unit with an isolated conventional (non-solid-state)
normally closed contact (designed in compliance with SIL3), e.g.,
safety switching device for emergency stop, safety door monitor,
etc.
In addition, the fault exclusion (short-circuit with other signals /
potentials) in the wiring (considering IEC 61800-5-2: 2007, table D.
1 or ISO 13849-2: 2008, table D.4) is required, or
– by means of an active safety unit with plus-switching OSSD output
(e.g., safety control units, laser scanners, etc.).
In addition, the fault exclusion (short-circuit with other signals /
potentials) in the wiring (considering IEC 61800-5-2: 2007, table D.
1 or ISO 13849-2: 2008, table D.4) is required.
● The dynamization of the safety function selection takes place
alternatively by means of
– the OSSD dynamization of the active safety unit or
– the dynamization outputs at the X49 terminal connector of the
optional safety technology module "L3" or "L4" in the case of
control by passive safety units.
● It is possible to set up a zone by connecting up to 25 drives in parallel.
● Online dynamization of the outputs and interrupting circuits
● Short reaction time [18 ms (108 ms with IndraDrive ML)]
● The state of safety function "Safe Torque Off" is displayed via parameter
"P-0-0106, Operating status STO/SBC".
Pertinent parameters
The following parameters are used in conjunction with the safety function
"Safe Torque Off":
● P-0-0101, Configuration STO/SBC
● P-0-0106, Operating status STO/SBC
Pertinent diagnostic messages
The following diagnostic messages can be generated in conjunction with the
safety function "Safe Torque Off":
● A0011 STO/SBC active
● E8027 STO/SBC while drive enabled
● F3134 Dynamization time interval incorrect
● F8027 STO/SBC while drive enabled
● F8300 Dynamization pulse width incorrect
● F8301 Error when checking selection signals
● F8302 Error when checking switch-off channels STO/SBC
● F8303 System error STO/SBC
With the safety function "Safe Torque Off" activated, the display of the drive
controller's control panel shows "STO".
Safety function
The optional safety technology modules "L3"/"L4" feature two 24 V inputs for
dual-channel selection and two dynamization outputs for operation at passive
safety units.
DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
Bosch Rexroth AG 51/149
Integrated safety functions
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
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