High-Precision Analog Input Module for S7-1200 PLCs
The Siemens 6ES7231-4HF32-0XB0 Analog Input Module provides eight differential inputs with high-resolution 13-bit accuracy. It supports both voltage and current signals, offering flexible integration into S7-1200 automation systems. Engineers can achieve fast sampling and precise signal measurement across multiple channels.
Key Features and Advantages
- Flexible Input Ranges: Supports ±10 V, ±5 V, ±2.5 V voltage ranges and 0–20 mA, 4–20 mA current ranges.
- High-Speed Operation: Measures all eight channels within a maximum cycle time of 625 µs.
- Low Power Consumption: Typical consumption is 45 mA from 24 V DC supply, with 1.5 W power loss.
- Robust Design: Operates in harsh environments from -20 °C to 60 °C with vibration and fall protection.
- Compact Size: Slim 45 mm width allows flexible DIN rail installation in compact control panels.
Detailed Technical Specifications
| Feature | Specification |
|---|---|
| Product Code | 6ES7231-4HF32-0XB0 |
| Manufacturer | Siemens |
| Module Type | SM 1231 Analog Input Module |
| Number of Inputs | 8 differential analog inputs |
| Input Signal Types | Voltage, Current, Resistance |
| Voltage Input Ranges | ±10 V, ±5 V, ±2.5 V (Input resistance ≥9 MΩ) |
| Current Input Ranges | 0–20 mA, 4–20 mA (Input resistance 280 Ω) |
| Maximum Input Voltage | 35 V (destruction limit) |
| Maximum Input Current | 40 mA (destruction limit) |
| Cycle Time | 625 µs for all channels |
| Supply Voltage | 24 V DC |
| Typical Current Consumption | 45 mA (Module), 90 mA from backplane bus |
| Power Loss | Typ. 1.5 W |
| Ambient Temperature Operation | -20 °C to 60 °C (horizontal); -20 °C to 50 °C (vertical) |
| Ambient Temperature Storage | -40 °C to 70 °C |
| Relative Humidity | Max. 95 % without condensation |
| Cable Protection | Handles vibration and free fall up to 0.3 m |
| Dimensions | W45 × H100 × D75 mm |
| Weight | 180 g |
| Country of Origin | Germany |
Dimensions and Weight
- Width: 45 mm
- Height: 100 mm
- Depth: 75 mm
- Weight: 180 g
Frequently Asked Questions
Which PLC series is compatible with this module?
The 6ES7231-4HF32-0XB0 integrates with Siemens S7-1200 PLCs.
What types of signals can it measure?
It supports voltage, current, and resistance inputs with high-precision 13-bit resolution.
How fast can it sample all channels?
It completes all eight channel measurements in a maximum cycle time of 625 µs.
Can it operate in extreme temperatures?
Yes, it works reliably from -20 °C to 60 °C in horizontal installations and up to 50 °C vertically.
Details
| Weight | 0.18 kg |
|---|---|
| Dimensions | 45 × 100 × 75 mm |
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