Product Description
Key Features
- RTD input identity: SM 1231, AI 4×16 bit RTD module with 4 analog inputs for resistance thermometers.
- Supply and consumption: Rated supply voltage: 24 V DC. Typical input current: 40 mA; backplane bus consumption: 80 mA at 5 V DC.
- Supported resistance thermometers: Supports Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100 and LG-Ni1000.
- Installation and protection: Horizontal operation: -25 °C to 60 °C, with +70 °C for 10 minutes under OT1, ST1/ST2 according to EN 50155. Vertical operation: -25 °C to 50 °C. Protection: IP20.
- Conformal coating and diagnostics: Conformal coating is Class 2 for high reliability according to EN 61086. Diagnostics include supply-voltage monitoring, wire-break detection and input-status LEDs.
Applications
- Resistance temperature measurement: Measures temperature using resistance thermometers, with the technical unit adjustable to degrees Celsius or degrees Fahrenheit.
Technical Summary
| Product type | SM 1231, AI 4×16 bit RTD |
|---|---|
| Based on | 6ES7231-5PD32-0XB0 |
| Analog inputs | 4; Resistance thermometer |
| Rated supply voltage | 24 V DC |
| Resolution with overrange | 15 bit; + sign |
| Supported resistance ranges | 0 to 150 ohms; 0 to 300 ohms; 0 to 600 ohms |
| Typical power loss | 1.5 W |
| Protection | IP20 |
| Front connector | Required |
| Lifecycle | Active Product |
Frequently Asked Questions
What order number should be confirmed for this Siemens RTD module?
Confirm the complete order number 6AG2231-5PD32-1XB0 and the product type SM 1231, AI 4×16 bit RTD.
How many RTD inputs does 6AG2231-5PD32-1XB0 have?
It has 4 analog inputs for resistance thermometers.
What supply voltage is required?
The rated supply voltage is 24 V DC.
What connector and mounting details should be checked?
A front connector is required. The module supports horizontal and vertical installation; the maximum operating temperature is 60 °C horizontally and 50 °C vertically.
