Analog modules
6.6 Analog input module SM 331; AI 8 x 13 Bit;(6ES7331-1KF01-0AB0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
6-41
Wiring: 2 and 4-wire measuring transducer for current measurement
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0
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0
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8
,
6
ದ
0
0
ದ
8
,
6
ದ
0
0
ದ
8
,
6
ದ
0
0
ದ
8
,
6
ದ
0
0
ದ
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8
,
6
ದ
0
0
ದ
8
,
6
ದ
0
0
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8
,
6
ದ
0
0
ದ
8
,
6
ದ
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0
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'08
Figure 6-12 Block diagram and wiring diagram
① 4-wire transducer (0/4...20 mA or ± 20 mA)
② 2-wire transducer (4...20 mA)
③ Potential compensation
④ Internal supply
⑤ + 5V from backplane bus
⑥ Logic and backplane bus interface
⑦ Electrical isolation
⑧ Multiplexer
⑨ Analog to Digital Converter (ADC)
⑩ Source of current
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