Product Overview
Technical Summary
| Product designation | SM 1231 RTD 4x 16 bit |
|---|---|
| Module identity | SIMATIC S7-1200 G2, SM 1231 RTD, AI 4x RTD module, Pt100 and Pt1000 |
| Analog inputs | 4; resistance thermometer |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Supported resistance thermometers | Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, LG-Ni1000 |
| Resistance ranges | 150 Ω, 300 Ω, 600 Ω |
| Resolution with overrange | 15 bit; + sign |
| Protection degree | IP20 |
Key Features
- Product designation: SM 1231 RTD 4x 16 bit module for SIMATIC S7-1200 G2.
- RTD inputs: 4 analog inputs for resistance thermometers, including Pt100, Pt1000, Ni100, Ni1000, and other listed sensor types.
- Supply voltage: Rated supply: 24 V DC; permissible range: 20.4 V to 28.8 V DC.
- Resistance ranges: Supports resistance measurement at 150 Ω, 300 Ω, and 600 Ω, plus 0 to 150 Ω, 0 to 300 Ω, and 0 to 600 Ω ranges.
- Diagnostics and isolation: Has supply-voltage monitoring, wire-break detection, diagnostic alarm, DIAG LED, and isolation between analog inputs and the electronics power supply.
Applications
- Temperature measurement: Measures temperature using resistance thermometers such as Pt100 and Pt1000.
- Resistance measurement: Measures resistance in the supported 150 Ω, 300 Ω, and 600 Ω ranges.
Frequently Asked Questions
What does 6ES7231-5PD50-0XB0 identify?
It identifies a SIMATIC S7-1200 G2 SM 1231 RTD module with 4 analog resistance-thermometer inputs and the product designation SM 1231 RTD 4x 16 bit.
Which specifications distinguish this RTD module variant?
The supplied specifications include a 24 V DC rated supply, 4 RTD inputs, Pt100 and Pt1000 support, 15 bit resolution with overrange, and IP20 protection.
What code and nameplate details should be checked before inquiry?
Check the complete order number 6ES7231-5PD50-0XB0 and confirm the SM 1231 RTD 4x 16 bit designation, 4 RTD inputs, and 24 V DC supply.
What quantity and destination are needed for a quotation?
Provide the required quantity and destination together with the complete order number.
