Product Overview
Applications
The module supports voltage measurement, current measurement as a 4-wire transducer and thermocouple measurement.
The module provides diagnostic information, diagnostic alarms, limit value alarms and parameterizable hardware interrupts.
Technical Summary
| Product | SIMATIC S7-400 SM 431 analog input module, 6ES7431-7KF00-0AB0 |
|---|---|
| Analog inputs | 8 |
| Resolution | 16 bit with overrange |
| Supported signals | Voltage, current and thermocouple |
| Rated input ranges | 1 V to 5 V; -1 V to +1 V; -10 V to +10 V; -100 mV to +100 mV; -2.5 V to +2.5 V; -20 mV to +20 mV; -250 mV to +250 mV; -5 V to +5 V; -50 mV to +50 mV; -500 mV to +500 mV; -80 mV to +80 mV; 0 to 20 mA; -10 mA to +10 mA; -20 mA to +20 mA; -3.2 mA to +3.2 mA; 4 mA to 20 mA; -5 mA to +5 mA |
| Thermocouple types | B, E, J, K, L, N, R, S, T, U |
| Conversion time | 10 / 16,7 / 20 / 100 ms |
| Diagnostics and alarms | Diagnostics, diagnostic alarm, limit value alarm and parameterizable hardware interrupt |
| Isolation | Between channels and between channels and backplane bus; tested with 1 500 V DC |
| Product lifecycle | Announcement of product phase-out |
Key Features
8 analog inputs support voltage, current and thermocouple measurement.
Resolution with overrange is 16 bit; basic conversion time is 10 / 16,7 / 20 / 100 ms.
Supported rated ranges include 1 V to 5 V, -10 V to +10 V, 4 mA to 20 mA and -20 mA to +20 mA.
Diagnostics, diagnostic alarms, limit value alarms and parameterizable hardware interrupts are supported.
The analog inputs are isolated internally and externally, between channels and between channels and the backplane bus; isolation is tested with 1 500 V DC.
Thermocouple cable length is max. 200 m with shielding; types B, E, J, K, L, N, R, S, T and U are supported.
Frequently Asked Questions
Which exact product is this line item?
It is Siemens 6ES7431-7KF00-0AB0, a SIMATIC S7-400 SM 431 analog input module with 8 AI.
How many analog inputs does the module have?
It has 8 analog inputs for voltage, current and thermocouple measurement.
What signal ranges are supported?
Supported ranges include 1 V to 5 V, -10 V to +10 V, 4 mA to 20 mA and -20 mA to +20 mA, among other listed ranges.
Does it support thermocouple diagnostics and alarms?
Yes. It supports parameterizable diagnostics, diagnostic alarms, limit value alarms and parameterizable hardware interrupts.
What details should accompany a quotation request?
Provide the requested quantity, destination, schedule context and any additional BOM lines for review.
