Key Features
- Thermocouple analog input module: SIMATIC S7-1200 module with 4 AI thermocouple inputs.
- Product type designation: SM 1231, AI 4×16 bit TC.
- Thermocouple support: Thermocouple input range: Yes; J, K, T, E, R, S, N, C, TXK/XK(L); voltage range: ±80 mV.
- Electrical supply: Rated value (DC): 24 V.
- Diagnostics and alarms: Alarms: Yes. Diagnostics function: Yes; Can be read out. Diagnostic alarm: Yes.
- Protection degree: IP degree of protection: IP20.
Technical Summary
| Product type designation | SM 1231, AI 4×16 bit TC |
|---|---|
| Rated value (DC) | 24 V |
| Current consumption, typ. | 40 mA |
| from backplane bus 5 V DC, typ. | 80 mA |
| Power loss, typ. | 1.5 W |
| Number of analog inputs | 4; Thermocouples |
| Thermocouple input range | Yes; J, K, T, E, R, S, N, C, TXK/XK(L); voltage range: ±80 mV |
| – Input resistance (-80 mV to +80 mV) | ≥1 MOhm |
| Resolution with overrange (bit including sign), max. | 15 bit; + sign |
| Interference voltage suppression for interference frequency f1 in Hz | 85 dB at 50 / 60 / 400 Hz |
| Diagnostics function | Yes; Can be read out |
| IP degree of protection | IP20 |
Applications
- Thermocouple temperature measurement: For acquiring temperature signals from thermocouples on 4 analog inputs.
Frequently Asked Questions
What is the exact Siemens model and module type for 6ES7231-5QD32-0XB0?
It is a SIMATIC S7-1200 analog input module, SM 1231 TC, with product type designation SM 1231, AI 4×16 bit TC.
How many thermocouple inputs does 6ES7231-5QD32-0XB0 have?
It has 4 analog inputs for thermocouples.
Which thermocouple types are supported by the SM 1231 TC module?
Supported thermocouple types are J, K, T, E, R, S, N, C, and TXK/XK(L); the voltage range is ±80 mV.
What are the supply and protection details for this module?
Rated value (DC): 24 V, and IP degree of protection: IP20.
