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

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

AC
DC

AC
AC
Figure 5-1

Configuring the ET 200S with Grounded Reference Potential

Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
ET 200S
FG
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
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
Wiring and Fitting
400 V)
PE (AUX1)
5-5