Priniples of analog value processing
4.2 Wiring transducers to analog inputs
S7-300 Automation System Module data
4-4 Manual, 08/2006, A5E00105505-04
Wiring electrically isolated transducer to a non-isolated AI
The CPU / IM 153 can be operated in grounded mode or ungrounded mode.
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Figure 4-2 Wiring electrically isolated transducers to a non-isolated AI
Note
If you are wiring a 2-wire current measuring transducer and resistance transducer, you must
not produce a connection between M- and M
ANA
. The current would then discharge via a
connecting line between M- and M
ANA
and the measurement would be distorted. This also
applies to inputs which are programmed accordingly, but remain unused.
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