Siemens SIMATIC User Manual

Analog modules
6.8 Analog input module SM 331; AI 2 x 12 Bit; (6ES7331-7KB02-0AB0)
S7-300 Module data
374 Manual, 06/2017, A5E00105505-AJ
Technical specifications
Basic error limit (operational limit at 25 °C, relative to the measurement range end value in the selected input range)
• Voltage input
80 mV
250 mV to 1,000 mV
2.5 V to 10 V
± 0.6 %
± 0.4 %
± 0.6 %
• Current input
3.2 mA to 20 mA ± 0.5 %
• Resistance
150 Ω; 300 Ω; 600 Ω ± 0.5 %
• Thermocouple
Types E, N, J, K, L ± 0.7 %
• Resistance thermometer
Pt 100/Ni 100 ± 0.5 %
Pt 100 Klima
± 0.6 %
Temperature error (relative to input range)
± 0.005%/K
Linearity error (relative to input range)
± 0.05 %
Repeat accuracy (in settled state at 25°C, relative to input
range)
± 0.05 %
Temperature error of internal compensation
± 1 %
Status, interrupts, diagnostics
Interrupts
• Limit interrupt
• Diagnostic interrupt
programmable
Channels 0
programmable
Diagnostic functions
• Group error display
• Reading diagnostics information
programmable
red LED (SF)
supported
Encoder selection data
Input ranges (rated values) / input impedance
• Voltage
± 80 mV
± 250 mV
± 500 mV
± 1,000 mV
± 2.5 V
± 5 V
1 V to 5 V
± 10 V
10 MΩ
10 MΩ
10 MΩ
10 MΩ
100 kΩ
100 kΩ
100 kΩ
100 kΩ
• 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 MΩ
10 ΜΩ
10 ΜΩ
• Thermocouples
Types E, N, J, K, L 10 ΜΩ
• Resistance thermometer
Pt 100, Ni 100 10 ΜΩ

Siemens SIMATIC Specifications

General

Product type designation	SIMATIC
CPU	Varies by model
Memory	Varies by model
Input/Output	Varies by model
Communication	Varies by model
Programming Language	STEP 7
Operating Temperature	0°C to 60°C (varies by model)
Protection Class	IP20
Category	Programmable Logic Controller (PLC)