Key Features
- SM 1231 RTD analog input module: Analog input module for SIMATIC S7-1200 with 8xAI RTD.
- 8 analog inputs: Provides 8 inputs for resistance thermometer signals.
- Resistance thermometer support: Supports Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, and LG-Ni1000.
- Diagnostics functions: Alarms, diagnostic alarm, wire break monitoring, and supply voltage monitoring are supported.
- 24 V DC supply: Rated value (DC): 24 V.
Applications
- Temperature measurement with resistance thermometers: For reading resistance thermometer signals on 8 analog inputs.
- Resistance measurement: For measuring 150 Ω, 300 Ω, and 600 Ω resistance signals.
Technical Summary
| Product type designation | SM 1231, AI 8×16 bit RTD |
|---|---|
| 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 | 8; Resistance thermometer |
| Resistance thermometer support | Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, LG-Ni1000 |
| Resistance input ranges | 150 Ω, 300 Ω, 600 Ω |
| Resolution with overrange (bit including sign), max. | 15 bit; + sign |
| Interference voltage suppression | 85 dB at 50 / 60 / 400 Hz |
| Diagnostics | Alarms; Diagnostic alarm; Wire break; Monitoring the supply voltage |
| IP degree of protection | IP20 |
Frequently Asked Questions
What is Siemens 6ES7231-5PF32-0XB0 used for?
It is an SM 1231 RTD analog input module for SIMATIC S7-1200 with 8xAI RTD.
How many analog inputs does 6ES7231-5PF32-0XB0 provide?
It provides 8 analog inputs.
Which sensor types are supported by this RTD module?
It supports Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, and LG-Ni1000.
What supply voltage does the module require?
Rated value (DC): 24 V.
