Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | SB 1231, AI 2x 16-bit RTD |
| Analog inputs | 2; Resistance thermometer |
| 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 |
| Integration time | Parameterizable |
| Temperature units | Degrees Celsius/degrees Fahrenheit |
| Input current | 20 mA typ. from the backplane bus 5 V DC |
| Power loss | 0.1 W typ. |
| Diagnostics | Alarms, diagnostic function, diagnostic alarm, wire break, DIAG LED |
| Protection | IP20 |
Applications
- RTD temperature measurement: Measures temperature using resistance thermometers such as Pt100 and Pt1000.
Key Features
- RTD analog inputs: 2 analog inputs for resistance thermometers, including Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, and LG-Ni1000.
- Resistance input ranges: Supports 150 Ω, 300 Ω, and 600 Ω resistance ranges, plus 0 to 150 ohms, 0 to 300 ohms, and 0 to 600 ohms resistor ranges.
- Resolution and conversion: Resolution with overrange is 15 bit; + sign. Integration time is parameterizable, with an integrating measurement principle.
- Temperature measurement: Temperature measurement units are adjustable between Degrees Celsius and degrees Fahrenheit.
- Diagnostics: The module has alarms, diagnostic functions that can be read out, diagnostic alarms, wire-break detection, and a DIAG LED for input status.
- Electrical and protection data: Input current from the backplane bus is 20 mA typ.; power loss is 0.1 W typ. Isolation is tested with 707 V DC (type test), and protection is IP20.
Frequently Asked Questions
1. How many RTD inputs does Siemens 6ES7231-5PB50-0XB0 have?
It has 2 analog inputs for resistance thermometers.
2. Which resistance thermometers are supported?
Supported resistance thermometers include Pt100, Pt1000, Ni100, Ni1000, Cu10, Cu50, Cu100, LG-Ni1000, and the other listed ranges from Pt10 to Pt500 and Ni120 to Ni500.
3. What diagnostics does this RTD signal board provide?
It provides alarms, a readable diagnostic function, diagnostic alarms, wire-break detection, and a DIAG LED for input status.
