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Bosch Rexroth AG
System overview
"Safe Torque
IndraDrive Cs
Up to 18 ms
IndraDrive Mi
Up to 18 ms
IndraDrive M /
IndraDrive C
IndraDrive ML
4.5
Safety characteristics of the safety system
4.5.1
Introduction
IndraDrive Cs
IndraDrive Mi
IndraDrive C / IndraDrive M
IndraDrive ML
IndraDrive Cs, IndraDrive Mi,
IndraDrive C, IndraDrive M and
IndraDrive ML
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
Selection
of the safety functions, i.e. transition from
normal operation ("bb/Ab")
SBC
STO
"Safe Brake Control"
(only with optional safety
Off"
technology module "L4")
Up to 18 ms + clamping
delay of the brake
108 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
–
●
When deselecting the safety functions
–
–
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.
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.
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.
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.
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
DOK-INDRV*-SI3-**VRS**-AP06-EN-P
of the safety functions, i.e. transition to normal
STO
"Safe Torque
Off"
20 ms
-
20 ms
-
120 ms
Time until at least a single-channel selection greater
than 1 ms exists
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)
Deselection
operation ("bb/Ab")
SBC
"Safe Brake Control"
(only with optional safety
technology module "L4")
20 ms
-
-
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