Siemens 6ES7134-4NB01-0AB0 Manual page 29

Non-isolated measuring encoders
The non-isolated measuring encoders are connected to the local ground potential. You must
connect M
potential differences U
measuring points.
If the permitted value for U
between the measuring points.
The following schematic representation illustrates the connection of non-isolated measuring
encoders to an optically isolated analog input module.
5
①
②
③
④
⑤
Non-isolated thermocouples
When using non-isolated thermocouples, you must comply with the permitted
common mode voltage.
2AI TC HF analog electronic module (6ES7134-4NB01-0AB0)
Manual, 04/2007, A5E01076892-01
to the ground potential. Depending on local conditions or interference,
ANA
(static or dynamic) can occur between the locally distributed
CM
4
Logic
Backplane bus
Ground bus
Equipotential bonding conductor
Non-isolated measuring encoders
is exceeded, there must be equipotential bonding conductors
CM
3
5.1 Connecting measuring sensors
1
2
Connecting
29