Product Description
Key Features
- Exact product identity: Product type designation: SM 1231, AI 4×16 bit RTD for SIMATIC S7-1200.
- RTD input capacity: Has 4 analog inputs for resistance thermometers, including Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100 and LG-Ni1000.
- Rated supply: Rated supply voltage: 24 V DC.
- Measurement resolution: Resolution with overrange, including sign: 15 bit; + sign.
- Diagnostics: Has alarms, readable diagnostics, diagnostic alarms, supply-voltage monitoring, wire-break detection and input-status and maintenance LEDs.
- Protection: IP degree of protection: IP20.
Applications
- RTD temperature measurement: Measures temperature using resistance thermometers with selectable degrees Celsius or degrees Fahrenheit.
Technical Summary
| Product lifecycle | Active Product |
|---|---|
| Product type designation | SM 1231, AI 4×16 bit RTD |
| Analog inputs | 4; Resistance thermometer |
| Rated supply voltage (DC) | 24 V |
| Current consumption, typ. | 40 mA |
| Backplane bus current, typ. | 80 mA from backplane bus 5 V DC |
| Power loss, typ. | 1.5 W |
| Measurement principle | integrating |
| Resolution with overrange (bit including sign), max. | 15 bit; + sign |
| IP degree of protection | IP20 |
Frequently Asked Questions
What exact model should be confirmed for this RTD input module?
Confirm Siemens order number 6ES7231-5PD32-0XB0 and product type designation SM 1231, AI 4×16 bit RTD.
How many RTD inputs does the module have?
It has 4 analog inputs for resistance thermometers.
What supply voltage does it use?
The rated supply voltage is 24 V DC.
What protection rating does it have?
It has IP20 protection.
