Siemens 6ES7431-7KF10-0AB0 — now in phase-out and being discontinued, supplied from remaining surplus and broker stock.
| Parameter | Value |
|---|---|
| Number of analog inputs | 8 |
| Current input range | No |
| Voltage input range | No |
| Resistance measuring ranges | Yes |
| RTD support (resistance thermometer) | Yes |
| Thermocouple support (types) | No |
| RTD type: Pt100 | Yes |
| RTD type: Pt200 | Yes |
| Permissible input voltage, max. (destruction limit) | 35 V; 35 V continuous, 75 V for max. 1 s (mark to space ratio 1:20) |
| Max. shielded signal cable length | 200 m; 50 m with thermocouples and input ranges ±80 mV |
| Parameter | Value |
|---|---|
| Resolution (bit incl. sign), max. | 16 bit |
| Interference voltage suppression (at interference frequency) | none/ 60 / 50 Hz |
| Parameter | Value |
|---|---|
| Diagnostic alarm | Yes; Parameterizable |
| Diagnostics function | Yes; Parameterizable |
| Limit value alarm | Yes |
| Parameter | Value |
|---|---|
| Isolation: channels to backplane bus | Yes |
| Isolation: between channels | No |
| Isolation test voltage | 500 V DC |
| Parameter | Value |
|---|---|
| Power loss, typ. | 3.3 W |
| Parameter | Value |
|---|---|
| Width | 25 mm |
| Height | 290 mm |
| Depth | 210 mm |
| Weight, approx. | 650 g |
The 6ES7431-7KF10-0AB0 is a Siemens SM 431 analog input module for the S7-400 series, providing 8 inputs with 16-bit resolution and direct support for Ni100, Pt200, Pt500, and Pt1000 RTDs, including selectable Europe/U.S. characteristics for Ni1000. It draws 3.3 W from the backplane, has a 500 V isolation test voltage, and has been RoHS compliant since 02-06-17.
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