Product Description
Key Features
- Exact product identity: SIMATIC S7-1200 analog input module, SM 1231, AI 8×16 bit TC.
- Thermocouple inputs: 8 analog inputs for thermocouples; supported types include J, K, T, E, R & S, B, N, C, and TXK/XK(L).
- Supply and consumption: Rated supply: 24 V DC. Typical current consumption: 40 mA; from backplane bus 5 V DC: 80 mA.
- Input range: Thermocouple voltage range: ±80 mV. Input resistance for -80 mV to +80 mV: ≥1 MOhm.
- Diagnostics: Alarms, diagnostics readout, supply-voltage monitoring, wire-break detection, and input-status LED indication.
- Protection: IP degree of protection: IP20.
Technical Summary
| Product type | SM 1231, AI 8×16 bit TC |
|---|---|
| Analog inputs | 8; Thermocouples |
| Rated supply voltage | 24 V |
| Thermocouple voltage range | ±80 mV |
| Typical current consumption | 40 mA |
| Backplane bus current consumption | 80 mA from backplane bus 5 V DC |
| Measurement principle | integrating |
| Resolution with overrange | 15 bit; + sign |
| Temperature error | 25 °C ±0.1%, to 55 °C ±0.2% total measurement range |
| Protection | IP20 |
Frequently Asked Questions
What is the exact product type of Siemens 6ES7231-5QF32-0XB0?
It is a SIMATIC S7-1200 SM 1231 analog input module with product type SM 1231, AI 8×16 bit TC.
How many thermocouple inputs does it have?
It has 8 analog thermocouple inputs.
What supply voltage does it use?
The rated supply voltage is 24 V DC.
Which thermocouple types are supported?
Supported types are J, K, T, E, R & S, B, N, C, and TXK/XK(L); the voltage range is ±80 mV.
