Siemens SIMATIC ET 200SP HA - Page 84

Power supply and grounding concept in the overall configuration
The following figure shows the IO device based on the ET 200SP HA distributed I/O system in
its overall configuration (supply voltage and ground concept) when supplied from a TN‑S
network.






)(*URXQGIXQFWLRQDOHDUWKIRUGLUHFWGLVFKDUJH
RILQWHUIHUHQFHOHYHOVRQWKHUDLOYLDDVSULQJFRQWDFW
/RZYROWDJHGLVWULEXWLRQ
HJ7166\VWHP9
*URXQGEXVEDU
/RDGSRZHUFLUFXLW9'&IRU,2PRGXOHV
/RDGSRZHUFLUFXLW9$&IRU,2PRGXOHV
0RXQWLQJUDLO
2SWLRQDOFRQQHFWLRQWRWKHJURXQGRIWKHUHIHUHQFHSRWHQWLDORIWKHFRQWUROOHU
(763+$
$&
'&
$&
$&
$&
'&
/
/
/
1
3(
)()()()()(
3(
/
0


① Main switch / disconnector
② Power supply (galvanic isolation)
③ Short-circuit / overload protection
Figure 6-4 ET 200SP HA in its overall configuration
See also
Power supply (SELV/PELV) (Page 148)
Wiring
6.3 Operation of the IO device on a grounded power supply
ET 200SP HA Distributed I/O system
84 System Manual, 08/2019, A5E39261167-AD