Siemens SIMATIC - Page 371

Analog modules
6.8 Analog input module SM 331; AI 2 x 12 Bit; (6ES7331-7KB02-0AB0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
371
Wiring: 2-wire and 4-wire transducers for current measurement
Figure 6-20 Wiring and block diagram
Measuring range module settings
Measuring range
Measuring range module setting
2-wire transducer
4 mA to 20 mA
D
4-wire transducer ± 3.2 mA
± 10 mA
0 mA to 20 mA
4 mA to 20 mA
± 20 mA
C
CAUTION
Measuring range module in "Current" position
If "current" measuring mode is set, any voltage measurement will destroy the measuring
range module.