Safety Integrity Level (SIL): relation between the SILs of IEC 62061 and the
Performance Level (PL) of EN ISO 13849‑1
Performance Level
(PL)
Average probability of dangerous failure
[1/h] (PFH)
Safety Integrity Level
(SIL)
Risk
a
≥10
-5
...<10
-4
-
b
≥3*10
-6
...<10
-5
1
c
≥10
-6
...<3*10
-6
1
d
≥10
-7
...<10
-6
2
e
≥10
-8
...<10
-7
3
Tab. 4-1:
Safety Integrity Level: failure limit values for a safety function of a
PDS(SR)
4.2
Product presentation
4.2.1
What is "Integrated Safety Technology"?
IndraDrive Cs
The control sections of the IndraDrive Cs range can be equipped with the
optional modules "L3" [STO (Safe Torque Off)] or "L4" [STO (Safe Torque
Off) and SBC (Safe Brake Control)].
The mentioned optional modules equip IndraDrive Cs with integrated safety
technology which provides the user with safe torque off and, if using the
optional module "L4", additionally with the safe control of a brake.
IndraDrive Mi
The IndraDrive Mi systems with the distributed servo drive KSM02 and the
distributed drive controller KMS02 can be equipped with the optional module
"L3" [STO (Safe Torque Off)].
The optional module "L3" equips IndraDrive Mi with integrated safety
technology which provides the user with safe torque off.
IndraDrive M / IndraDrive C
The Cxx02 control sections of the IndraDrive M / IndraDrive C range can be
equipped with the optional module "L3" [STO (Safe Torque Off)].
The optional module "L3" equips IndraDrive M / IndraDrive C with integrated
safety technology which provides the user with safe torque off.
IndraDrive ML
The Cxx02.5 control sections of the IndraDrive ML range can be equipped
with the optional module "L3" [STO (Safe Torque Off)].
The optional module "L3" equips IndraDrive ML with integrated safety
technology which provides the user with safe torque off.
Definition
●
"Safe Torque Off" means application-related safety functions which are
applicable for personal protection at machines according to
ISO 13849-1 Category 4, PL e and IEC 62061 SIL 3.
●
"Safe Brake Control" means application-related safety functions which
are applicable for personal protection at machines according to
ISO 13849-1 Category 4, PL e and IEC 62061 SIL 3.
Selecting the function
The safety functions can be selected via 24 V inputs at the drive controller.
Certification
The safety technology was certified by TÜV Rheinland ®; the NRTL listing by
TÜV Rheinland of North America is in preparation.
Certificates are available on the Internet/Extranet.
Bosch Rexroth AG
DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
26/149
System overview
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
