Wiring
3-4
ET 200eco Distributed I/O Station
A5E00158716-02
Overall structure of ET 200eco
Figure 3-1 shows the overall structure of an ET 200eco distributed I/O station
((Load supply voltages and grounding concept) with power supply from a TN-S
network.
Grounding bus
1 L+
1
M
ET 200eco
L1
L2
L3
n
Low–voltage distribution,
e.g. in a TN-S system (3
400 V)
PE
M
internal
Data
m
P
AC
DC
for ET 200eco
with ECOFAST terminal block:
24 VDC NS
Terminal block
I/O module
1M is not connected to PE in instal-
lations without grounding.
A
B
PROFIBUS-DP
24 VDC
Figure 3-1
ET 200eco operation with reference potential bonded to equipotential earth
3.3
Electrical structure of the ET 200eco system
Isolated potential
The electrical circuit of an ET 200eco is galvanically separated between:
•
1L+ (electronic circuit/sensor supply):
Potential isolation to PROFIBUS-DP and 2L+ (load voltage supply),except I/O
module 8 DI/8 DO 2 A.
•
2L+ (load voltage supply):
Potential isolation to all other circuit elements execpt I/O module 8 DI/8 DO 2 A.
For I/O module 8 DI/8 DO 2 A, 1M and 2M are interconnected internally.
•
PROFIBUS-DP interface:
Potential isolation to other circuit components.
Summary of Contents for SIMATIC ET 200eco
Page 8: ...Preface viii ET 200eco Distributed I O Station A5E00158716 02 ...
Page 18: ...Product overview 1 6 ET 200eco Distributed I O Station A5E00158716 02 ...
Page 70: ...Commissioning and diagnostics 4 16 ET 200eco Distributed I O Station A5E00158716 02 ...
Page 116: ...I O address area C 6 ET 200eco Distributed I O Station A5E00158716 02 ...
Page 124: ...Index Index 4 ET 200eco Distributed I O Station A5E00158716 02 ...
