Siemens SIRIUS 3RW55 - Page 340

Basic con󹪝guration
Safe shutdown up to SILCL 3 according to IEC 62061 / PL e according to EN ISO 13849‑1 requires
the use of 2 redundant contactors and monitoring of the auxiliary contacts of both contactors.
Two-channel monitoring of the EMERGENCY STOP is also required here.
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① EMERGENCY STOP
② 3RT20 contactors
③ 3RW55 soft starter
④ Motor
⑤ 3SK1 safety relay
Example circuits
A.3 Special applications
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
340 Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006