5.2.2 Functional Safety Conformance according to EC Machinery Directive
STO (Safe Torque Off)
The S700 servo amplifier offers a two channel STO function (Safe Torque Off). The function
blocks the trigger pulses of the power transistors (pulse inhibitor).
The STO safety concept is certified by the TÜV. The safety circuit concept for realizing the
safety function "Safe Torque Off" in the servo amplifiers S700 is suited for SIL CL3 according
to IEC 62061 and PLe according to ISO 13849-1. The subsystems (servo amplifiers) are
totally described for safety technics with the characteristic data SIL CL, PFHD and TM.
Device
Operation mode EN 13849-1 EN 62061 PFHD [1/h] TM [Year]
STO1/2 Enable single channel PLd, Cat.3 SIL CL 2 7.05E-08 20
STO1-Enable+
STO2-Enable
dual channel PLd, Cat.3 SIL CL 2 7.05E-08 20
STO1-Enable+
STO2-Enable+
STO-Status
dual channel +
periodical testing
PLe, Cat.4 SIL CL 3 1.38E-09 20
SIL2 / PLd solutions can be implemented with single-channel or dual-channel control with
simple safety switching devices.
SIL3 / PLe solutions requires a safety control that periodically tests the safe switching of the
pulse inhibitor by analyzing the feedback signal.
Expansion card "Safety 2-2" (S4)
This expansion card (Basic version) includes various safety functions for the safe operation
of drive shafts. All functions fulfill the safety requirements SIL CL2 according to IEC 62061
respectively performance level PLd according to ISO 13849-1. The functional safety is cer-
tified by the TÜV. Safety characteristic data are listed in the Instructions Manual of the expan-
sion card.
Expansion card "Safety 1-2" (S3)
This expansion card (full version) includes several safety functions. All functions fulfill the
safety requirements SIL CL3 acc. to IEC 62061 respectively performance level PLe acc. to
ISO 13849-1. The functional safety is certified by the TÜV. Safety characteristic data are lis-
ted in the Instructions Manual of the expansion card.
5.3 Conformance with RoHS
The device is manufactured in conformance with RoHS Directive 2011/65/EC with delegated
directive 2015/863/EC for installation into a machine.
5.4 Conformance with REACH
EU Regulation no. 1907/2006 deals with the registration, evaluation, authorization and restric-
tion of chemical substances 1 (abbreviated to "REACH").
The device does not contain any substances (CMR substances, PBTsubstances, vPvB sub-
stances and similar hazardous substances stipulated in individual cases based on scientific
criteria) above 0.1 mass percent per product that are included on the candidate list.
S748-772 Instructions Manual | 5 Approvals
Kollmorgen | kdn.kollmorgen.com | July 2019 23
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