Siemens 6ES7431-7KF10-0AB0

SM 431 analog input, 8 AI, 16 bit, resistance thermometers

Image is for illustrative purposes only. Please refer to product description.

Delivery options

Siemens SIMATIC S7-400 SM 431 analog input module: 8 isolated inputs for resistance thermometers (Pt100 to Pt1000, Ni100, Ni1000) and resistance, 16-bit resolution, diagnostics and hardware interrupt.

Manufacturer: Siemens
Manufacturer part no.: 6ES7431-7KF10-0AB0
Product family: SIMATIC S7-400 PLC CPUs, I/O and Function Modules
Type: Analog input module
Category: PLCs and I/O › Analogue I/O modules
Lifecycle: Discontinued
OEM successor: Not stated
Technical datasheet: Data sheet

Technical specifications

Manufacturer: Siemens
Manufacturer part no.: 6ES7431-7KF10-0AB0
Type: Analog input module
Application: Analog input module (RTD)
Used with: SIMATIC S7-400 rack
Input current / from backplane bus 5 V DC, max.: 650 mA
Power loss, typ.: 3.3 W
Number of analog inputs: 8
Number of analog inputs / For resistance measurement: 8
Analog inputs / permissible input voltage for voltage input (destruction limit), max.: 35 V; 35 V continuous, 75 V for max. 1 s (mark to space ratio 1:20)
Analog inputs / Constant measurement current for resistance-type transmitter, typ.: 1 mA
Input ranges / Voltage: No
Input ranges / Current: No
Input ranges / Thermocouple: No
Input ranges / Resistance thermometer: Yes
Input ranges / Resistance: Yes
Input ranges (rated values), resistance thermometer / Ni 100: Yes
Input ranges (rated values), resistance thermometer / Ni 100 / Input resistance (Ni 100): > 10 000 ohms
Input ranges (rated values), resistance thermometer / Ni 1000: Yes; Different characteristics selectable: Europe/U.S.
Input ranges (rated values), resistance thermometer / Ni 1000 / Input resistance (Ni 1000): > 10 000 ohms
Input ranges (rated values), resistance thermometer / Pt 100: Yes
Input ranges (rated values), resistance thermometer / Pt 100 / Input resistance (Pt 100): > 10 000 ohms
Input ranges (rated values), resistance thermometer / Pt 1000: Yes
Input ranges (rated values), resistance thermometer / Pt 1000 / Input resistance (Pt 1000): > 10 000 ohms
Input ranges (rated values), resistance thermometer / Pt 200: Yes
Input ranges (rated values), resistance thermometer / Pt 200 / Input resistance (Pt 200): > 10 000 ohms
Input ranges (rated values), resistance thermometer / Pt 500: Yes
Input ranges (rated values), resistance thermometer / Pt 500 / Input resistance (Pt 500): > 10 000 ohms
Characteristic linearization / Parameterizable: Yes
Characteristic linearization / Parameterizable / for resistance thermometer: Pt100, Pt200, Pt500, Pt1000, Ni100, Ni1000; different characteristics selectable (Europe/U.S.)

Show all 54 specifications

Cable length / shielded, max.: 200 m; 50 m with thermocouples and input ranges ±80 mV
Integration and conversion time/resolution per channel / Resolution with overrange (bit including sign), max.: 16 bit
Integration and conversion time/resolution per channel / Integration time, parameterizable: Yes
Integration and conversion time/resolution per channel / Basic conversion time (ms): 8 / 23 / 25 ms
Integration and conversion time/resolution per channel / Integration time (ms): 20 ms at 50 Hz (entire module incl. wire break)
Integration and conversion time/resolution per channel / Interference voltage suppression for interference frequency f1 in Hz: none/ 60 / 50 Hz
Integration and conversion time/resolution per channel / Basic execution time of the module (all channels released): 8 ms; 8 / 23 / 25 ms
Connection of signal encoders / for resistance measurement with three-wire connection: Yes
Connection of signal encoders / for resistance measurement with four-wire connection: Yes
Operational error limit in overall temperature range / Resistance thermometer, relative to input range, (+/-): ±1 °C
Basic error limit (operational limit at 25 °C) / Resistance thermometer, relative to input range, (+/-): ±0,2 °C
Interrupts/diagnostics/status information / Diagnostics function: Yes; Parameterizable
Alarms / Diagnostic alarm: Yes; Parameterizable
Alarms / Limit value alarm: Yes
Alarms / Hardware interrupt: Yes; Parameterizable
Diagnoses / Diagnostic information readable: Yes; possible
Potential separation analog inputs / Potential separation analog inputs: Yes; internal/external
Potential separation analog inputs / between the channels: No
Potential separation analog inputs / between the channels and backplane bus: Yes
Isolation tested with: 500 V DC
Width: 25 mm
Height: 290 mm
Depth: 210 mm
Weight, approx.: 650 g

Technical documents (1)

Siemens data sheet 6ES7431-7KF10-0AB0

Key features

8 inputs for resistance thermometers or resistance
Pt100, Pt200, Pt500, Pt1000, Ni100 and Ni1000
16-bit resolution; module cycle from 8 ms
Diagnostics, limit value alarm and hardware interrupt
Discontinued by Siemens on 1 October 2026

About the Siemens 6ES7431-7KF10-0AB0

The Siemens 6ES7431-7KF10-0AB0 is the resistance-thermometer SM 431, the companion to the thermocouple and voltage/current 6ES7431-7KF00-0AB0. Siemens's data sheet gives 8 inputs for Pt100, Pt200, Pt500, Pt1000, Ni100 and Ni1000 sensors and resistance, a 1 mA measuring current, 16-bit resolution, limit value and hardware interrupts, and 3.3 W typical power loss. SiePortal shows its phase-out announced on 1 October 2025 and its product cancellation on 1 October 2026.

What is the 6ES7431-7KF10-0AB0 used for?

It reads temperatures from Pt100 and other resistance thermometers straight into an S7-400 CPU.

Lifecycle and successor

Discontinued.

Before you order

What to photograph or confirm so the right unit is quoted.

Check the order number on the module: 7KF10 is for resistance thermometers, 7KF00 for voltage, current and thermocouples.

Other parts in the Siemens SIMATIC S7-400 family

Listed for reference. They differ from the 6ES7431-7KF10-0AB0 in rating, supply, interface or function and are not interchangeable with it unless Siemens says so. Match the part number on your unit.

Product	Type	Lifecycle	Qty Available	Price	Action
Siemens 6ES7422-1HH00-0AA0SM 422 relay output, 16 DO, 5 A	Digital output module	Discontinued	On Request	On request	View
Siemens 6ES7431-1KF00-0AB0SM 431 analog input, 8 AI, 13 bit, U/I/R	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7431-1KF10-0AB0SM 431 analog input, 8 AI, 14 bit, U/I/R/thermocouple/RTD	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7431-1KF20-0AB0SM 431 analog input, 8 AI, 14 bit, 0.42 ms for all channels	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7431-7QH00-0AB0SM 431 analog input, 16 AI, 16 bit, universal, diagnostics	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7431-7KF00-0AB0SM 431 analog input, 8 AI, 16 bit, U/I/thermocouple	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7431-0HH00-0AB0SM 431 analog input, 16 AI, 13 bit, non-isolated	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7432-1HF00-0AB0SM 432 analog output, 8 AO, 13 bit, U/I	Analog output module	Discontinued	On Request	On request	View
Siemens 6ES7450-1AP01-0AE0FM 450-1 counter module, 2 channels, up to 500 kHz	Counter module	Discontinued	On Request	On request	View
Siemens 6ES7451-3AL00-0AE0FM 451 positioning module, 3 channels, rapid/creep traverse	Positioning module	Discontinued	On Request	On request	View
Siemens 6ES7452-1AH00-0AE0FM 452 electronic cam controller, 16 cam tracks	Cam controller module	Discontinued	On Request	On request	View
Siemens 6ES7455-0VS00-0AE0FM 455 C controller module, 16 continuous control channels	Controller module	Discontinued	On Request	On request	View

You may also be interested in

TimControls is an independent distributor. Manufacturer names and logos are the property of their respective owners and identify products we source; they do not imply manufacturer authorization or affiliation.

Need Siemens 6ES7431-7KF10-0AB0? Send us the details.

Request a Quote