Analog modules
6.8 Analog input module SM 331; AI 2 x 12 bit; (6ES7331-7KB02-0AB0)
S7-300 Automation System Module data
6-68 Manual, 08/2006, A5E00105505-04
Technical data
Diagnostics functions
• Group error display
• Reading diagnostics information
programmable
red LED (SF)
supported
Transducer selection data
Input ranges (rated values) / input impedance
• Voltage
± 80 mV
± 250 mV
± 500 mV
± 1000 mV
± 2.5 V
± 5 V
1 V to 5 V
± 10 V
10 MΩ
10 MΩ
10 MΩ
10 MΩ
100kΩ
100kΩ
100kΩ
100kΩ
• Current
± 3.2 mA
± 10 mA
± 20 mA
0 mA to 20 mA
4 mA to 20 mA
25 Ω
25 Ω
25 Ω
25 Ω
25 Ω
• Resistance
150 Ω
300 Ω
600 Ω
10 ΜΩ
10 ΜΩ
10 ΜΩ
• Thermocouples
Types E, N, J, K, L 10 ΜΩ
• Resistance thermometer
Pt 100, Ni 100 10 ΜΩ
Permissible voltage at voltage input (destruction limit) max. 20 V continuous; 30 V for the duration of max. 1 s
(duty factor 1:20)
Permissible current at current input (destruction limit) 40 mA
Wiring signal transducers with 20-pin front connector
• for voltage measurement
supported
• for current measurement
as 2-ire transducer
as 4-wire transducer
supported
supported
• for resistance measurement
with 2-wire connection
with 3-wire connection
with 4-wire connection
supported
supported
supported
• Load of the 2-wire transducer
max. 820 Ω
Characteristic linearization
• for thermocouples
• of 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 measurements
programmable
supported
supported
supported
Degrees Centigrade
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