Siemens Simatic SM331 - 5.3 Wiring of the analog module

Electrical connection
5.3 Wiring of the analog module
SM331; AI 8x12 Bit Getting Started part 1: 4 -20mA
5-4 Getting Started, 11/2006, A5E00253410-02
5.3 Wiring of the analog module
5.3.1 Requirement
General
The wiring of an analog measurement transducer is depends on its type and not on the
SM331 module.
5.3.2 Current transducer wiring - principle
Options
Depending on the current transducer you use, you have to modify the wiring of the power
supply. We differentiate between the wiring of a 2-wire current transducer and a 4-wire
current transducer.
Wiring principles of a 2-wire current transducer
This transducer type is supplied with power from the analog input module.
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Figure 5-2 Wiring: 2-Wire current transducer