Selection
of the safety functions, i.e. transition from
normal operation ("bb/Ab")
Deselection
of the safety functions, i.e. transition to normal
operation ("bb/Ab")
STO
"Safe Torque
Off"
SBC
"Safe Brake Control"
(only with optional safety
technology module
"L4")
STO
"Safe Torque
Off"
SBC
"Safe Brake Control"
(only with optional safety
technology module "L4")
IndraDrive Cs Up to 18 ms
Up to 18 ms + clamping
delay of the brake
20 ms 20 ms
IndraDrive Mi
IndraDrive M /
IndraDrive C
Up to 18 ms - 20 ms -
IndraDrive ML 108 ms - 120 ms -
Tab. 4-5: Reaction times of integrated safety technology
The above-mentioned reaction times only apply to the safety
functions. To determine the total
reaction time of the system, take
the following aspects, among other things, into account:
● When selecting the safety functions
– Time until at least a single-channel selection greater
than 1 ms exists
● When deselecting the safety functions
– Time until an error-free dual-channel deselection exists
– Reaction time of the drive system after the setting of
drive enable (put motor under current, release brake)
4.5 Safety characteristics of the safety system
4.5.1 Introduction
IndraDrive Cs
For using the optional
safety technology modules "L3" and "L4", the
IndraDrive Cs system has been certified according to IEC 61508,
IEC 61800-5-2, IEC 62061 and ISO 13849-1.
IndraDrive Mi
For using the optional safety technology module "L3", the IndraDrive Mi
system has been certified according to IEC 61508, IEC 61800-5-2,
IEC 62061 and ISO 13849-1.
IndraDrive C / IndraDrive M
For using the optional safety technology module "L3", the IndraDrive C /
IndraDrive M system has been certified according to IEC 61508,
IEC 61800-5-2, IEC 62061 and ISO 13849-1.
IndraDrive ML
The certification of the IndraDrive ML system for using the optional safety
technology module "L3" according to IEC 61508, IEC 61800-5-2, IEC 62061
and ISO 13849-1 is in preparation.
IndraDrive Cs, IndraDrive Mi,
IndraDrive C, IndraDrive M and
IndraDrive ML
The risk assessment and risk reduction of a machine require assessing the
safety functions of the individual components. The interaction of the
components must be taken into account, too. In addition to the systematic
suitability, it is also necessary to determine the total PFH value for the
machine or the machine part (e.g., a safety zone). The total PFH value allows
judging whether the required "Safety Integrity Levels" (SIL) or "Performance
Levels" (PL) have been complied with. As regards the optional safety
Bosch Rexroth AG DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
40/149
System overview
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
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