Siemens SIMATIC ET 200X - Potentials Present in an ET 200 X-ECOFAST Configuration

Wiring
4-9
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
BM 141-ECOFAST
Ground bus
RS 485
interface
Data
L1
L2
L3
N
PE
mP
Feed
DESINA
connection
AC
DC
A
B
DC 24 V-NS
M-NS
AC
DC
DC 24 V-S
M-S
Loop through
DESINA
connection
A
B
DC 24 V-NS
M-NS
DC 24 V-S
M-S
X1
X3
X5
X7
X2
X4
X6
X8
Figure 4-5 Potentials present in an ET 200X-ECOFAST configuration
Note
In the case of the ET 200X-DESINA/ET 200X-ECOFAST distributed I/O device,
the frame potentials of the switched and non-switched load voltage are connected
to each other.