SIMATIC S7-1200, Analog input, SM 1231, 4 AI

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Out of stock
SKU
6ES7231-4HD32-0XB0

Pricing available on request

Description:

  • The SM 1231 provides 4 differential analog inputs with configurable voltage or current ranges.
  • It’s ideal for precise analog signal acquisition in HVAC, crane, and elevator systems, especially where ±10 V or 4–20 mA sensors are used.

Specifications:

  • Electrical Characteristics:
    • Supply Voltage: 24 V DC.
    • Backplane Bus Current: 80 mA (typical).
    • Power Loss: 1.5 W (typical).
  • Input Protection Limits:
    • Voltage: up to 35 V.
    • Current: up to 40 mA.
  • Analog Inputs:
    • Channels: 4 differentials.
    • Voltage Ranges: ±10 V, ±5 V, ±2.5 V.
    • Current Ranges: 0–20 mA, 4–20 mA.
  • Input Resistance:
    • Voltage: ≥9 MΩ.
    • Current: 280 Ω.
    • Resolution: 12-bit + sign (13-bit ADC).
    • Cycle Time (all channels): Max 625 µs.
    • Smoothing: Configurable (None, Low, Medium, High).
  • Accuracy & Diagnostics:
    • Basic Error (25 °C): ±0.1%.
    • Extended Error (up to 55 °C): ±0.2%.
  • Diagnostics:
    • Wire break detection.
    • Supply voltage monitoring.
    • Diagnostic alarms.
    • LEDs for input status and maintenance.
  • Mechanical & Environmental:
    • Dimensions (W x H x D): 45 x 100 x 75 mm.
    • Mounting: DIN rail.
    • Protection Rating: IP20.
    • Operating Temp: –20 to +60 °C.
    • Storage Temp: –40 to +70 °C.
    • Humidity: Up to 95% (non-condensing).
    • Shock/Vibration: IEC 60068 compliant.
  • Compliance & Approvals:
    • CE, UL, CSA, FM, RCM, KC.
    • Marine: DNV, LRS, BV, NK, RINA, CCS.
    • ATEX, IECEx.
    • Environmental Product Declaration (EPD).
    • Global Warming Potential: 43.1 kg CO₂ eq.
More Information
SKU 6ES7231-4HD32-0XB0
Brand Siemens
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