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6ES7431-1KF20-0AB0

6ES7431-1KF20-0AB0 | SM 431 8 AI 14 Bit 0.416ms Siemens

In stock (19 units), ready to be shipped

  • Manufacturer: Siemens

  • Product No.: 6ES7431-1KF20-0AB0

  • Product Type: Analog Input Module

  • Product Origin: DE

  • Payment:T/T, Western Union

  • Weight: 500g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Description

Siemens 6ES7431-1KF20-0AB0 SIMATIC S7-400 Analog Input Module

Product Overview

Siemens 6ES7431-1KF20-0AB0 is a SIMATIC S7-400 analog input module SM 431 with 8 isolated analog inputs. Features 14 bit resolution with ultra-fast 0.416 ms cycle time. Supports voltage, current, and resistor input ranges. Isolated between channels and backplane bus. Designed for high-speed analog signal acquisition applications.

Technical Specifications

Parameter Value
Brand Siemens
Model 6ES7431-1KF20-0AB0
Series SIMATIC S7-400
Type Analog Input SM 431
Analog Inputs 8 isolated (4 for resistance)
Resolution 14 bit
Cycle Time 0.416 ms
Load Voltage 24V DC
Input Current from L+ 200 mA max
Backplane Current 1000 mA max at 5V DC
Power Loss 4.9 W typical
Voltage Ranges ±1V, ±10V, 1 to 5V
Current Ranges ±20mA, 4 to 20mA
Resistor Range 0 to 600 Ohm
Basic Conversion Time 52 µs
Input Filter Time Constant 15 µs
Module Execution Time 0.42 s (all channels)
Shielded Cable Length 200m max
Isolation 2120V DC bus to analog section
Dimensions W x H x D 25 x 290 x 210 mm
Weight 500 g

Installation

Install module in SIMATIC S7-400 rack. Connect 24V DC load voltage for 2 wire transmitters. Wire analog signals to front connector. Use shielded cable maximum 200m. Verify potential separation between channels and backplane bus. Configure integration time and filter per application requirements.

Features

8 isolated analog inputs with 14 bit resolution. Ultra-fast 0.416 ms cycle time for high speed applications. Supports voltage (±1V, ±10V, 1 to 5V), current (±20mA, 4 to 20mA), and resistor (0 to 600 Ohm) inputs. Integration time parameterizable with 400/60/50 Hz interference suppression. 15 µs input filter time constant. Potential separation between channels and backplane bus. Compact 25mm width design.

FAQ

Q1: How many analog inputs does this module have?
A1: 8 analog inputs for voltage/current measurement, 4 for resistance measurement. Resolution 14 bit.

Q2: What is the cycle time?
A2: 0.416 ms cycle time. Basic conversion time 52 µs. Module execution time 0.42 s for all channels.

Q3: What is the difference between 1KF10 and 1KF20?
A3: 1KF20 offers faster cycle time (0.416 ms vs 20.1 ms) and supports ±20mA and ±1V ranges but does not support thermocouple or RTD inputs like 1KF10.

Product Resources

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🏷️ Tags: Analog Input Module Siemens

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