Product Overview
Technical Summary
| Product designation | SIMATIC S7-400, analog input SM 431 |
|---|---|
| Analog inputs | 8 |
| Resolution | 16 bit |
| Input types | Voltage, current, thermocouple |
| Thermocouple types | B, E, J, K, L, N, R, S, T, U |
| Conversion time | 20 ms |
| Input isolation | Internal/external; between channels and backplane bus |
| Diagnostic functions | Diagnostics, diagnostic alarm, limit value alarm, hardware interrupt |
Key Features
- SIMATIC S7-400 SM 431: Analog input module with 8 analog inputs and 16-bit resolution.
- Supported input ranges: Voltage, current and thermocouple inputs are supported; resistance thermometer and resistance inputs are not.
- Voltage and current ranges: Rated ranges include 1 V to 5 V, -10 V to +10 V, 0 to 20 mA and 4 mA to 20 mA, among other listed ranges.
- Thermocouple support: Types B, E, J, K, L, N, R, S, T and U are supported, with parameterizable characteristic linearization.
- Diagnostics and alarms: Parameterizable diagnostics, diagnostic alarms and hardware interrupts are supported; limit value alarms are also available.
- Isolation and dimensions: Analog inputs are isolated internally, externally, between channels and from the backplane bus. Dimensions are 25 mm × 290 mm × 210 mm; weight is approximately 650 g.
Frequently Asked Questions
What does Siemens order number 6ES7431-7KF00-0AB0 identify?
It identifies a SIMATIC S7-400 SM 431 analog input module with 8 analog inputs, 16-bit resolution, voltage, current and thermocouple inputs, isolation, diagnostics and alarms.
Which specifications distinguish this exact MLFB variant?
Check the 8 analog inputs, 16-bit resolution, supported voltage and current ranges, thermocouple types B, E, J, K, L, N, R, S, T and U, isolation, diagnostics and alarms.
What details are needed to request a quotation?
Provide the complete order number 6ES7431-7KF00-0AB0, the required quantity and the destination.
