Siemens SIMATIC ET 200X - Potentials Present in an ET 200 X Configuration with Frequency Converter

Wiring
4-7
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
1L+
1M
BM
2M
2L+
EM DO
Ground bus
Actuator
1M
Data
EM DI EM 148-FC
L1
L2
L3
N
PE
AC
DC
AC
DC
M
3 
Note: The potentials of the analog modules EM AI and EM AO
correspond to those of the EM DI expansion modules.
mP
mC
Brake
Filter
mC
Figure 4-3 Potentials present in an ET 200X configuration with frequency converter