SIEMENS 6ES7331-7NF00-0AB0 Power supply module

SIMATIC S7-300 SM 331 Analog Input Module - Technical Specifications

General Information:

• Product Type: Analog Input Module
• Designation: SM 331
• Order Number: 6ES7331-7NF00-0AB0
• Manufacturer: Siemens
• Module Type: Isolated
• HW Version: 01
• FW Version: V1.0.0

Technical Data - Analog Inputs:

• Number of Analog Inputs: 8 channels
  • Configurable Inputs: Yes
  • Input Types (Configurable per channel group):
    • Voltage: ±10V, ±5V, ±2.5V, ±1V, ±500mV, ±250mV, ±125mV, 1-5V
    • Current: 0/4-20mA, ±20mA
    • Resistance Thermometer (RTD): Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, Cu10
    • Thermocouple: Type B, C, E, J, K, L, N, R, S, T, U, TXK/TXK(Cu-CuNi)
• Input Ranges: Refer to configuration options above.
• Resolution: 9, 11, 12, 13, 14, 15 bits (depending on configuration and input type)
  • including sign: Yes (for bipolar ranges)
• Input Impedance:
  • Voltage input: ≥ 10 MΩ
  • Current input: approx. 250 Ω
  • RTD/Thermocouple: Dependent on sensor type.
• Measuring principle: Sigma-delta conversion
• Conversion Time per Channel: Approx. 62.5 ms (for all channels, depending on parameters)
• Accuracy:
  • Basic accuracy limit (±): 0.1% of full scale (depending on input type and range)
  • Linearity error (relative to full-scale value) (±): 0.05 %
  • Temperature error (relative to full-scale value) (±): 0.01 %/K
• Input delay (with resistive load):
  • for resistive load: 0.1 or 1 channel groups, parameterizable

Technical Data - Isolation:

• Galvanic isolation: Yes
• between channels and backplane bus: Yes
• between channels and the power supply of the modules: Yes
• Isolation tested with: 500 V DC

Technical Data - Power Supply:

• Rated value (DC): 24 V
• Current consumption (from backplane bus 5 V DC): Typ. 60 mA
• Power loss: Typ. 3 W

Installation type/mounting:

• Mounting: S7-300 standard mounting rail

Ambient conditions:

• Operating temperature: 0 to +60 °C (horizontal mounting), 0 to +50 °C (vertical mounting)
• Storage temperature: -25 to +70 °C
• Protection class: IP20

Dimensions and Weight:

• Width: 40 mm
• Height: 125 mm
• Depth: 120 mm
• Weight: Approx. 220 g