Key Features
- SIMATIC S7-1200 G2 module: SM 1231 TC analog input module for the SIMATIC S7-1200 G2 family.
- 8 thermocouple inputs: Number of analog inputs: 8; Thermocouples.
- AI 8×16 bit TC designation: Product type designation: SM 1231, AI 8×16 bit TC.
- 24 V DC supply: Rated value (DC): 24 V, with permissible range from 20.4 V to 28.8 V.
- Diagnostics functions: Alarms, diagnostic alarm, monitoring the supply voltage, wire break detection, and diagnostics readout are supported.
- Protection and isolation: IP20 degree of protection, with isolation tested at 707 V DC (type test) and 120 V AC between channels.
Technical Summary
| Product type designation | SM 1231, AI 8×16 bit TC |
|---|---|
| Number of analog inputs | 8; Thermocouples |
| Thermocouple types | Yes; 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 |
| Power loss, typ. | 0.6 W |
| Resolution with overrange (bit including sign), max. | 15 bit; + sign |
| Interference voltage suppression | 85 dB at 10 / 50 / 60 / 400 Hz |
| IP degree of protection | IP20 |
| Product lifecycle | Active Product |
Applications
- Thermocouple temperature measurement: Measures temperature signals from thermocouples on 8 input channels.
- Thermocouple signal acquisition for controller I/O: Acquires thermocouple inputs for use with a SIMATIC S7-1200 G2 controller.
Frequently Asked Questions
What is the exact model and product type of 6ES7231-5QF50-0XB0?
It is a Siemens SIMATIC S7-1200 G2 SM 1231 TC analog input module with the product type designation SM 1231, AI 8×16 bit TC.
How many thermocouple inputs does the module have?
The module has 8 analog inputs for thermocouples.
What supply voltage does 6ES7231-5QF50-0XB0 require?
Rated supply voltage is 24 V DC, with a permissible range from 20.4 V to 28.8 V.
Which thermocouple types are supported?
Supported thermocouple types are J, K, T, E, R & S, B, N, C, and TXK/XK(L); voltage range: ±80 mV.
What installation and protection details are listed for the module?
The module has IP20 degree of protection, shielded cable length up to 100 m to the sensor, and isolation tested with 707 V DC and 120 V AC between channels.
