Siemens SIMATIC ET 200S - Example

Determining the Leakage Resistance of an ET 200S Station
E-2
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
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 one ground-fault detector:
R
ET 200S
=
9, 5 MΩ
3
= 3.17 MΩ
Figure E-2 Leakage resistance example