Key Features
- 4 analog inputs for RTD measurement: The module provides 4 analog inputs for resistance thermometers.
- SM 1231, AI 4×16 bit RTD: Product type designation: SM 1231, AI 4×16 bit RTD.
- Diagnostics functions: Diagnostics function can be read out, with diagnostic alarm support.
- Input status and maintenance indication: Diagnostics indication LED is provided for the status of the inputs and for maintenance.
- 24 V DC rated supply: Rated value (DC): 24 V.
- IP20 protection: IP degree of protection: IP20.
Applications
- RTD signal acquisition: For acquiring resistance thermometer signals through 4 analog inputs.
- Temperature measurement with selectable units: For temperature measurement with Degrees Celsius/degrees Fahrenheit as the technical unit.
- Diagnostic monitoring of input status: For reading diagnostics, monitoring the supply voltage, and detecting wire break conditions.
Technical Summary
| Product type designation | SM 1231, AI 4×16 bit RTD |
|---|---|
| Number of analog inputs | 4; Resistance thermometer |
| 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 |
| Technical unit for temperature measurement adjustable | Degrees Celsius/degrees Fahrenheit |
| Resistance thermometer support | Yes; Resistance-type transmitter: Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, LG-Ni1000 |
| 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 |
Frequently Asked Questions
What is Siemens 6ES7231-5PD32-0XB0?
It is an SIMATIC S7-1200 SM 1231 RTD analog input module.
How many analog inputs does 6ES7231-5PD32-0XB0 provide?
It provides 4 analog inputs for resistance thermometers.
What supply voltage does the module use?
Rated value (DC): 24 V.
Which diagnostic functions are available on this module?
It supports alarms, a readout diagnostics function, diagnostic alarm, monitoring the supply voltage, and wire break detection.
