SIEMENS SIMATIC S7-1200, SM 1231 RTD, 6ES7231-5PD32-0XB0, analog input module (RTDs)

833,400 Ks

Product Parameter

  • Type: RTD analog input module for S7-1200

  • Inputs: 4 RTD channels

  • Supported RTDs: Pt/Ni/Cu types (e.g., Pt100, Pt1000)

  • Measuring Ranges: 0–150 Ω, 0–300 Ω, 0–600 Ω

  • Resolution: 15-bit signed

  • Input Signal: Resistance (Ω)

  • Supply Voltage: 24 V DC

  • Current Consumption: 40 mA (24 V DC), 80 mA (5 V DC backplane)

  • Dimensions: 45 x 100 x 75 mm (W x H x D)

  • Protection: IP20

  • Diagnostics: Yes (voltage monitoring, wire-break detection)

  • Approvals: CE, UL, FM, etc.

  • Operating Temp: -20°C to +60°C

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Product Description

         

SIMATIC S7-1200 SM 1231 RTD – analog input module (RTDs) (6ES7231-5PD32-0XB0)

              The Siemens 6ES7231-5PD32-0XB0 is a SIMATIC S7-1200 analog input module, specifically the SM 1231 RTD variant, designed for precise temperature measurements using resistance temperature detectors (RTDs). It offers high-resolution data acquisition, making it suitable for various industrial automation applications.

Key Features:

  • Module Type: SM 1231 RTD analog input module

  • Number of Inputs: 4 analog inputs dedicated to RTDs

  • Supported RTD Types: Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, LG-Ni1000

  • Resistance Measurement Ranges: 0–150 Ω, 0–300 Ω, 0–600 Ω

  • Resolution: 15-bit with sign

  • Measurement Units: Selectable between degrees Celsius and Fahrenheit

  • Measurement Principle: Integrating

  • Interference Suppression: 85 dB at 50/60/400 Hz

  • Common Mode Interference Rejection: ≥120 dB

 

Electrical Specifications

  • Supply Voltage: 24 V DC

  • Typical Current Consumption:

    • 40 mA from 24 V DC supply

    • 80 mA from 5 V DC backplane bus

  • Power Loss: Approximately 1.5 W

Diagnostics and Alarms

  • Diagnostic Functions: Yes; includes monitoring of supply voltage and wire-break detection

  • Diagnostic Alarms: Yes

  • LED Indicators:

    • Input status

    • Maintenance requirements

Physical and Environmental Specifications

  • Dimensions (W x H x D): 45 mm x 100 mm x 75 mm

  • Weight: Approximately 0.191 kg

  • Degree of Protection: IP20

  • Operating Temperature Range:

    • Horizontal installation: -20°C to +60°C

    • Vertical installation: -20°C to +50°C

  • Storage Temperature Range: -40°C to +70°C

  • Relative Humidity: Up to 95% at 25°C without condensation

  • Air Pressure for Operation: 795 to 1080 hPa

  • Air Pressure for Storage/Transport: 660 to 1080 hPa

Approvals and Compliance

  • Certifications: CE, CSA, UL, cULus, FM, RCM, KC, Marine approval

  • RoHS Compliance: Yes, since 30.08.2013

  • REACH Compliance: Contains lead (CAS No. 7439-92-1) and lead monoxide (CAS No. 1317-36-8) above 0.1% w/w; considered safe under normal use

Compatibility

  • Compatible CPUs: Designed for use with SIMATIC S7-1200 Basic Controllers, including CPU 1211C, CPU 1212C, and CPU 1214C