Technical Summary
| Product type | SIMATIC S7-400, analog input SM 431 |
|---|---|
| Number of analog inputs | 8 |
| Resolution | 14 bit |
| Signal types | U/I/Resistor/Thermocouple/Pt100 |
| Load voltage L+ | 24 V; Only required for supplying 2-wire transmitters |
| Power loss, typ. | 3.5 W |
| Input current from backplane bus 5 V DC, max. | 600 mA |
| Input current from load voltage L+ (without load), max. | 200 mA; for 8 connected, fully controlled 2-wire transmitters |
| Potential separation analog inputs | Yes; internal/external |
| Between the channels and backplane bus | Yes |
Applications
Analog signal acquisition
Acquisition of voltage, current, resistance, thermocouple, and Pt100 signals.
Key Features
SIMATIC S7-400 analog input module
SM 431 analog input module for SIMATIC S7-400.
8 isolated analog inputs
Provides 8 AI with isolation.
14 bit resolution
Resolution: 14 bit.
Multi-signal input support
Supports U/I/Resistor/Thermocouple/Pt100.
Phase-out status supplied
Lifecycle: Announcement of product phase-out.
Frequently Asked Questions
What is Siemens 6ES7431-1KF10-0AB0?
It is a SIMATIC S7-400 analog input SM 431 module.
How many analog inputs does 6ES7431-1KF10-0AB0 have?
It has 8 analog inputs.
Which signal types does the module support?
It supports U/I/Resistor/Thermocouple/Pt100.
What supply voltage does the module use for 2-wire transmitters?
Load voltage L+ is 24 V; only required for supplying 2-wire transmitters.
What are the module dimensions and weight?
Width is 25 mm and weight is approximately 500 g.
