Key Features
- SM 1231, AI 8×16 bit TC: Product type designation for the module.
- 8 thermocouple inputs: Analog inputs: 8; Thermocouples.
- Thermocouple types: Type J, K, T, E, R & S, B, N, C, TXK/XK(L); voltage range: ±80 mV.
- 24 V DC supply: Rated value (DC): 24 V; permissible range: 20.4 V to 28.8 V.
- Diagnostics and alarms: Alarms: Yes; diagnostics function: Yes; diagnostic alarm: Yes; monitoring the supply voltage: Yes; wire break: Yes.
- IP20 protection: Degree of protection: IP20.
Applications
- Thermocouple signal acquisition: For reading thermocouple signals from connected sensors.
- Temperature measurement input processing: For temperature measurement with configurable units in Degrees Celsius or degrees Fahrenheit.
Technical Summary
| Product type designation | SM 1231, AI 8×16 bit TC |
|---|---|
| Analog inputs | 8; Thermocouples |
| Thermocouple input support | Type J, K, T, E, R & S, B, N, C, TXK/XK(L); voltage range: ±80 mV |
| Rated supply voltage | 24 V |
| Permissible supply voltage range | 20.4 V to 28.8 V |
| Current consumption, typ. | 15 mA |
| Current from backplane bus 5 V DC, typ. | 40 mA |
| Power loss, typ. | 0.6 W |
| Resolution with overrange (bit including sign), max. | 15 bit; + sign |
| Integration time | parameterizable |
| Cold connection point | ±1,5 °C |
| Repeat accuracy in steady state at 25 °C (relative to input range), (+/-) | 0.05 % |
| IP degree of protection | IP20 |
Frequently Asked Questions
What is the Siemens 6ES7231-5QF50-0XB0 used for?
It is an SM 1231 analog input module with 8 thermocouple inputs for SIMATIC S7-1200 G2 systems.
Which thermocouple types does the 6ES7231-5QF50-0XB0 support?
It supports type J, K, T, E, R & S, B, N, C, and TXK/XK(L); voltage range: ±80 mV.
What power supply does the 6ES7231-5QF50-0XB0 require?
Rated value (DC): 24 V. Permissible range: 20.4 V to 28.8 V.
What diagnostics are available on the 6ES7231-5QF50-0XB0?
It includes alarms, a diagnostic function that can be read out, diagnostic alarm, supply voltage monitoring, wire break detection, and a DIAG LED for input status.
