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II - DCE FEL ČVUT v Praze

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4.6 HART Analog Input Module SM 331; AI 2 x 0/4...20mA HART<br />

In this section<br />

Order number<br />

Features<br />

I/O Modules with Intrinsically-Safe Signals<br />

C79000-G7076-C152-04<br />

This section provides you with the properties, the technical data, and a wiring<br />

diagram.<br />

6ES7 331-7TB00-0AB0<br />

The analog input module SM 331; AI 2 x 0/4...20mA HART has the<br />

following properties:<br />

2 inputs in 2 channel groups<br />

2 outputs to power 2-wire measuring transducers<br />

Measured value resolution; can be set for each channel individually (see<br />

analog values and resolution on the following page).<br />

Measurement type can be selected for each channel:<br />

– HART (2-wire transducer or 4-wire transducer for current)<br />

– 2-wire or 4-wire transducer for current (used without HART)<br />

– Channel deactivated<br />

Measuring range selectable for each channel<br />

– 0 ... 20 mA (only for 4-wire transducers used without HART)<br />

– 4 ... 20 mA<br />

Settings for diagnostics and diagnostic interrupt<br />

– Group diagnostics<br />

– Wire-break monitoring<br />

– Diagnostic interrupt<br />

SIMATIC S7 HART Analog Modules<br />

Settings for hardware interrupt<br />

– Channels 0 and 1 with limit monitoring: hardware interrupt can be set<br />

to trigger if limit is exceeded<br />

– Hardware interrupt can be set for cycle end<br />

Isolation<br />

– Channels electrically isolated from each other<br />

– Channels electrically isolated from CPU and load voltage L+<br />

4-15

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