PLC | Siemens | 6ES7 231-4HD32-0XB0 S7-1200 Analog input SM 1231 6ES7231-4HD32-0XB0

Product Description: Siemens 6ES7231-4HD32-0XB0

The Siemens 6ES7231-4HD32-0XB0 is a SIMATIC S7-1200 analog input module that provides 4 high-resolution analog input channels. Each channel is individually configurable for voltage or current signals, allowing flexible and accurate acquisition of analog process values such as pressure, temperature, and flow. With 13-bit resolution and robust performance, it is ideal for compact automation systems requiring precision analog measurement.

Key Features

• 4 analog inputs
• Supports voltage and current signal types
• Individually configurable channels
• High resolution: 13 bits
• Integrated diagnostics for signal errors
• Seamless integration into the S7-1200 system via TIA Portal
• DIN rail mounting for space-efficient installation

Technical Specifications

• Part Number: 6ES7231-4HD32-0XB0
• Number of Inputs: 4 analog channels
• Input Signal Ranges:
  • Voltage: 0–10 V, ±10 V, 1–5 V, 0–5 V
• Resolution: 13 bits
• Input Impedance:
  • Voltage: ≥100 kΩ
• Conversion Time: ≤ 1 ms per channel
• Galvanic Isolation: Yes (between channels and system)
• Power Supply: Via backplane from S7-1200 CPU
• Mounting: DIN rail
• Dimensions (W × H × D): 45 mm × 100 mm × 75 mm
• Weight: Approx. 180 g
• Protection Class: IP20
• Operating Temperature: 0 °C to +55 °C
• Storage Temperature: –40 °C to +70 °C
• Certifications: CE, cULus, EAC

Application Areas

• Industrial measurement and monitoring
• Analog sensor integration in automation systems
• Machine control applications with analog process signals
• Building management and HVAC systems
• Compact automation solutions requiring accurate analog inputs

Advantages

• Versatile analog input support for voltage and current signals
• High resolution ensures precise process value acquisition
• Reduces external wiring complexity with integrated signal conditioning
• Compact size fits easily into small control panels
• Fully compatible with Siemens TIA Portal and S7-1200 CPUs