Siemens SIMATIC - Page 375

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
375
Technical specifications
Maximum voltage at voltage input (destruction limit) max. 20 V continuous; 75 V for the duration of max. 1 s
(duty factor 1:20)
Maximum current at current input (destruction limit)
40 mA
Wiring of the signal transmitters
using a 20-pin front connector
• for voltage measurement
supported
• for current measurement
as 2-ire transducer
as 4-wire transducer
supported
supported
• For thermoresistor/resistance measurement
With 2-wire connection
With 3-wire connection
With 4-wire connection
Supported, cable resistances are not compensated
Supported, cable resistances are not compensated
Supported, cable resistances are compensated
• Load of the 2-wire transducer
max. 820 Ω
Characteristics linearization
• for thermocouples
• for resistance thermometers
programmable
Types E, N, J, K, L
Pt 100 (Standard and Klima range)
Ni 100 (Standard and Klima range)
Temperature compensation
• Internal temperature compensation
• External temperature compensation with compensating
box
• Compensation for 0 °C reference junction temperature
• Technical unit of temperature measurement
programmable
supported
supported
supported
degrees Centigrade
See also
Causes of error and troubleshooting at analog input modules (Page 297)