6ES7331-7SF00-0AB0 | Siemens Analog Input Module

Description

The 6ES7331-7SF00-0AB0 is an analog input module designed for Siemens SIMATIC S7-300 series. It features optical isolation and supports 8 thermocouple inputs and 4 RTD (resistance temperature detector) inputs, making it suitable for use in hazardous areas. It is capable of diagnostics and PTB-tested for safety and reliability.

Key Specifications

• Manufacturer: Siemens
• Model: 6ES7331-7SF00-0AB0
• Product Type: Analog Input Module
• Input Channels: 8 thermocouples, 4 RTDs (PT100, PT200, Ni100, etc.)
• Resolution: 16-bit (max.), configurable between 10 to 15 bits
• Measurement Principle: Sigma Delta
• Input Range: Supports various thermocouples (Types B, E, J, K, L, N, R, S, T, U) and RTDs (Ni100, Pt100, Pt200)
• Supply Voltage: 24 V DC (rated)
• Input Current (from backplane): 120 mA (max.)
• Power Loss: 0.6 W (typ.)
• Ambient Temperature: 0°C to 60°C (operational)
• Cable Length: 200 m for shielded cables, 50 m for thermocouples
• Weight: Approx. 210 g

Functional Features

• Diagnostic Functions: Includes overrange, wire-break, and short-circuit diagnostics
• LED Indicators: Group error and channel fault indicators
• Interference Suppression: 60 dB (series mode), 130 dB (common mode)
• Module for Ex(i) Protection: Certified for use in hazardous areas
• Ex(i) Certifications:
  • EN 50020 (CENELEC) Type of protection [EEx ib] IIC
  • FM Class I, Division 2, Group A, B, C, D T4

Environmental and Safety Standards

• Operational Temperature: Max. 60°C
• Voltage Separation: Up to 400 V DC / 250 V AC in non-hazardous areas
• Front Connector: 20-pin required