Key Features
- Analog input module: SIMATIC S7-400 analog input SM 431.
- 8 AI, 16 bit resolution: Provides 8 analog inputs with resolution 16 bit.
- Resistance thermometer support: Resistor/PT100/NI100 isolated with diagnostics alarm and 20 ms conversion time.
- Potential separation: Potential separation analog inputs: Yes; internal/external. Between the channels and backplane bus: Yes.
Technical Summary
| Product type | SIMATIC S7-400 analog input SM 431 |
|---|---|
| Number of analog inputs | 8 |
| Resolution with overrange | 16 bit |
| Input ranges, resistance thermometer | Yes |
| Input ranges, resistance | Yes |
| Supported resistance thermometer types | Ni 100; Ni 1000; Pt 100; Pt 1000; Pt 200; Pt 500 |
| Integration time | 20 ms at 50 Hz (entire module incl. wire break) |
| from backplane bus 5 V DC, max. | 650 mA |
| Power loss, typ. | 3.3 W |
| Potential separation analog inputs | Yes; internal/external |
Applications
- Resistance thermometer measurement: Reading resistance thermometers on the analog inputs.
- Resistance measurement with three-wire and four-wire connection: Connecting signal encoders for resistance measurement with three-wire connection or four-wire connection.
Frequently Asked Questions
What is the exact Siemens model and product type of 6ES7431-7KF10-0AB0?
6ES7431-7KF10-0AB0 is a SIMATIC S7-400 analog input SM 431.
How many analog inputs does 6ES7431-7KF10-0AB0 have and what is the resolution?
It has 8 analog inputs and 16 bit resolution.
Which resistance thermometer types are supported by 6ES7431-7KF10-0AB0?
Supported types are Ni 100, Ni 1000, Pt 100, Pt 1000, Pt 200, and Pt 500.
What are the connection options for resistance measurement on this module?
Connection of signal encoders for resistance measurement is supported with three-wire connection and four-wire connection.
What operating and physical details should be confirmed before ordering 6ES7431-7KF10-0AB0?
The module has 650 mA from backplane bus 5 V DC max., 3.3 W typ. power loss, and dimensions of 25 mm x 290 mm x 210 mm with an approximate weight of 650 g.
