Technical Summary
| Product family | SIMATIC S7-400 |
|---|---|
| Module type | analog input SM 431 |
| Number of analog inputs | 8 |
| Resolution | 16 bit |
| Supported input types | U/I/Thermocouple |
| Basic conversion time | 10 / 16,7 / 20 / 100 |
| Backplane bus current, from 5 V DC, max. | 1 200 mA |
| Power loss, typ. | 4.6 W |
| Potential separation analog inputs | Yes; internal/external |
Key Features
SIMATIC S7-400 analog input module
SM 431 analog input module for the SIMATIC S7-400 series.
SM 431 analog input module for the SIMATIC S7-400 series.
8 analog inputs
Provides 8 AI for signal acquisition.
Provides 8 AI for signal acquisition.
16 bit resolution
Resolution with overrange, bit including sign, max. 16 bit.
Resolution with overrange, bit including sign, max. 16 bit.
U/I/Thermocouple support
Supports voltage, current, and thermocouple input ranges.
Supports voltage, current, and thermocouple input ranges.
Diagnostics and alarms
Diagnostics function, diagnostic alarm, limit value alarm, and hardware interrupt are parameterizable or available.
Diagnostics function, diagnostic alarm, limit value alarm, and hardware interrupt are parameterizable or available.
Isolated inputs
Potential separation analog inputs is Yes; internal/external, between the channels, and between the channels and backplane bus.
Potential separation analog inputs is Yes; internal/external, between the channels, and between the channels and backplane bus.
Applications
Voltage signal acquisition
For voltage measurement on analog inputs.
For voltage measurement on analog inputs.
Current signal acquisition
For current measurement on analog inputs, including 4-wire transducer connection.
For current measurement on analog inputs, including 4-wire transducer connection.
Thermocouple input handling
For thermocouple measurement with supported types B, E, J, K, L, N, R, S, T, and U.
For thermocouple measurement with supported types B, E, J, K, L, N, R, S, T, and U.
Frequently Asked Questions
What is 6ES7431-7KF00-0AB0 in the SIMATIC S7-400 range?
It is a SIMATIC S7-400 analog input SM 431 module with 8 AI.
Which input signal types does 6ES7431-7KF00-0AB0 support?
It supports voltage, current, and thermocouple inputs.
What resolution and conversion time does 6ES7431-7KF00-0AB0 provide?
It offers 16 bit resolution and basic conversion times of 10 / 16,7 / 20 / 100 ms.
What cable length and isolation details are given for 6ES7431-7KF00-0AB0?
The shielded cable length is max. 200 m, and isolation tested with is 1 500 V DC.
