Siemens SIMATIC ET 200SP System Manual page 281

Technical specifications
14.3 Electromagnetic compatibility of fail-safe modules
Figure 14-2
Name
A = BVT AVD 24
B = DCO RK D 5 24
C = The external protective circuit required at the outputs of the modules F-PM-E power module load
group can be found in the Designing interference-free controllers
(http://support.automation.siemens.com/WW/view/en/59193566) function manual.
Electromagnetic compatibility of fail-safe motor starters
The safety versions of the motor starters are additionally tested according to the
requirements of IEC 61000-6-7:2014 (taking into consideration the failure criteria for the STO
safety function).
280
External protective circuit (surge filter) for ET 200SP with fail-safe modules
Part number of Dehn Co.
918 422
919 986
System Manual, 09/2019, A5E03576849-AJ
Distributed I/O system