Configuring The Et 200S With Grounded Reference Potential - Siemens SIMATIC ET 200S Manual

Wiring and Fitting
Overall configuration of the ET 200S
Figure 5-1 shows the overall configuration of the ET 200S distributed I/O system
(load voltage supply and grounding concept) with supply from a TN-S system.
L1
L2
L3
N
PE


Rail


AC
DC

AC
AC
Figure 5-1

Configuring the ET 200S with grounded reference potential

5-6
ET 200S
AC
1L+
DC
1M
Ground bus
Low-voltage distribution – TN-S
system, for example (3
FG: Functional ground to divert noise di-
rectly to the DIN rail by means of a spring
contact
FG FG FG FG FG FG FG
FG
Shield contact for cable shields

Load circuit
400 VAC for motor starters

24 VDC load circuit for electronic modules and
motor starters

120 VAC/230 VAC load circuit for AC modules
400 V)
PE (AUX1)
ET 200S Distributed I/O System
EWA-4NEB780602402-09