Siemens SIMATIC ET 200S Manual page 552

Example
An ET 200S configuration contains an IM151-1 STANDARD, two PM-E 24 VDC
power modules, and various input and output modules. The entire ET 200S station
is equipped with a single ground-fault detector:
R
ET 200S
Figure E-2
E-2
9, 5 MW
+ + 3, 17 MW
3
Leakage resistance example
ET 200S Distributed I/O System
EWA-4NEB780602402-09