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This article will help you understand the differences between older S700 (S701-724) drives with single-channel STO and newer dual-channel STO S700 drives. 

This article provides an overview of SafeMotion functions for Kollmorgen S700 servo drives.

File Description 
This manual provides information for the safe installation and setup of the PCMM Motion Controller. Includes general information, safety, handling, setup, troubleshooting, mechanical and electrical data.
Language 
English
French
German
Italian
Portuguese, Brazil
Russian
Spanish
Release 
Release Date 
Tuesday, February 6, 2018
  Safety CCC CE UL UR cUL cUR EAC RoHS
KSM Safety Module     EN / DE            
SKS36S / SKM36S Safety Feedback SIL2/PLd                
Device EN 13849-1 EN 61800-5-2 PFHD (1/h) TM (Years)
Input STO-Enable PL d, Cat.3 SIL 2 1.50E-07 20
Device EN 13849-1 EN 61800-5-2 PFH(1/h) T(Years)
Input STO-Enable PL d, Cat.3 SIL 2  1.50E-07 20

There is no certification for the S601-620 drives according to EN 13849-1 or EN 62061.

Function Operation Mode ISO  13849-1 IEC 61508-2 PFH [1/h] TM [Years] SFF [%]
STO single channel PL d, CAT 2 SIL 2 1.88E-07 20 89
STO dual channel PL d, CAT 3 SIL 2 5.64E-09 20 87
STO dual channel with periodical testing PL d, CAT 4 SIL 3 5.64E-09 20 87

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