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Siemens 6ES7331-7KF02-0AB0 SIMATIC S7-300, Analog input SM 331

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Siemens 6ES7331-7KF02-0AB0 SIMATIC S7-300, Analog input SM 331

€1.409,85
€1.409,85
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Siemens 6ES7331-7KF02-0AB0 SIMATIC S7-300, Analog input SM 331

Siemens 6ES7331-7KF02-0AB0 SIMATIC S7-300 Analog Input Module SM 331, 8 AI

Multi-range isolated analog input module for voltage, current, thermocouple, and RTD signals

Overview

This is a Siemens SIMATIC S7-300 Analog Input module SM 331, 6ES7331-7KF02-0AB0, a versatile 8-channel isolated analog input module supporting voltage, current, thermocouple, and resistance (RTD) sensor signals within a single unit. Its selectable 9-, 12-, or 14-bit resolution and broad range of input types make it suited to a wide variety of precision measurement tasks, from process voltage and current monitoring to temperature sensing via thermocouples or Pt100/Ni100 resistance sensors.

Key Features

  • Multi-signal-type inputs: Supports 8 analog voltage/current channels, or 4 thermocouple/RTD/resistance channels, on the same module.
  • Broad input range selection: Voltage ranges from ±80mV to ±10V, current ranges from ±3.2mA to 0/4–20mA, thermocouple types E/J/K/N, and RTD/resistance ranges including Pt100, Ni100, and 0–600 Ω.
  • Selectable resolution: 9-, 12-, or 14-bit (plus sign) resolution depending on input type and configuration.
  • Parameterizable integration time: Adjustable integration time of 2.5/16.67/20/100 ms per channel, balancing measurement speed against noise rejection.
  • Diagnostics and alarm functions: Built-in diagnostic capability and alarm generation for accurate process monitoring and fast fault detection.
  • Optical isolation: Channels are optically isolated from the backplane bus, and the module can be removed/inserted with the backplane bus active.

What's Included

Model Function Qty
SM 331 (6ES7331-7KF02-0AB0) Analog input module, 8 AI, isolated 1

Technical Specifications

Inputs: 8 isolated analog inputs (voltage/current); or 4 channels for thermocouple/RTD/resistance.

Resolution: 9/12/14-bit (plus sign), selectable by input type.

Voltage ranges: ±80mV, ±250mV, ±500mV, ±1V, 1–5V, ±2.5V, ±5V, ±10V.

Current ranges: ±3.2mA, ±10mA, ±20mA, 0/4–20mA.

Thermocouple / RTD ranges: Type E, J, K, N thermocouples; Ni100, Pt100, 0–150Ω, 0–300Ω, 0–600Ω.

Integration time: Parameterizable — 2.5/16.67/20/100 ms.

Supply voltage: 24V DC load voltage, with reverse-polarity protection.

Connector: 1x 20-pole, hot-swappable with active backplane bus.

Compatibility & Applications

Compatible with Siemens SIMATIC S7-300 systems, this module fits a wide variety of process measurement and monitoring applications — from voltage and current signal acquisition to precision temperature measurement via thermocouples or Pt100/Ni100 RTDs — in manufacturing, process control, and general industrial automation environments.

A1Customer — Industrial Automation Equipment | Tampere, Finland
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