Product Overview
Technical Summary
| Product identity | SIMATIC S7-400 SM 431 analog input module, 6ES7431-1KF10-0AB0 |
|---|---|
| Analog input capacity | 8 isolated analog inputs |
| Supported measurements | Voltage, current, resistance, thermocouple, resistance thermometer and Pt100 |
| Resolution | 14 bit with overrange including sign; 16 bit with activated filtering |
| Load voltage L+ | Rated value (DC): 24 V; only required for supplying 2-wire transmitters |
| Input ranges | 1 V to 5 V, -10 V to +10 V, 0 to 20 mA, 4 mA to 20 mA, thermocouples, resistance thermometers and resistors |
| Product lifecycle | Announcement of product phase-out |
Key Features
Has 8 isolated analog inputs; voltage and current measurement use 8 inputs, while resistance measurement uses 4 inputs.
Supports voltage, current, thermocouple, resistance thermometer and resistance input ranges, including 1 V to 5 V and 4 mA to 20 mA.
Provides 14 bit resolution with overrange including sign; with activated filtering, resolution is 16 bit.
Load voltage L+ is 24 V DC and is required only for supplying 2-wire transmitters. Reverse polarity protection is Yes.
Supports voltage measurement, 2-wire and 4-wire current transducers, and 2-wire, 3-wire and 4-wire resistance measurement.
Product lifecycle: Announcement of product phase-out.
Frequently Asked Questions
What is the exact Siemens line item?
It is 6ES7431-1KF10-0AB0, a SIMATIC S7-400 SM 431 analog input module with isolated 8 AI and 14 bit resolution.
Which measurement types does this module support?
It supports voltage, current, resistance, thermocouple and resistance thermometer measurements, including Pt100.
What supply is required for 2-wire transmitters?
Load voltage L+ is 24 V DC and is required only for supplying 2-wire transmitters.
What connections are supported for signal encoders?
It supports voltage measurement, 2-wire and 4-wire current transducers, and 2-wire, 3-wire and 4-wire resistance measurement.
