SIEMENS 6ES7431-0HH00-0AB0 SIMATIC S7-400 Analog Input Module

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                                                                                                                                                                                                                                                                                                                                            Product Overview

                                                                                                                                                                                                                                                                                                                                            The SIEMENS 6ES7431-0HH00-0AB0 is a SIMATIC S7-400 SM 431 analog input module with 16 analog input channels and 13-bit resolution. It supports voltage and current measurement, including ±10 V, ±1 V, 1–5 V, ±20 mA, and 4–20 mA signals. Siemens identifies this exact model as SM 431, AI 16 × 13 Bit.

                                                                                                                                                                                                                                                                                                                                            Key Technical Specifications

                                                                                                                                                                                                                                                                                                                                            Item	Specification
                                                                                                                                                                                                                                                                                                                                            Brand	SIEMENS
                                                                                                                                                                                                                                                                                                                                            Model	6ES7431-0HH00-0AB0
                                                                                                                                                                                                                                                                                                                                            Product Family	SIMATIC S7-400
                                                                                                                                                                                                                                                                                                                                            Module Type	SM 431 Analog Input
                                                                                                                                                                                                                                                                                                                                            Number of Inputs	16
                                                                                                                                                                                                                                                                                                                                            Resolution	13 bit
                                                                                                                                                                                                                                                                                                                                            Input Type	Analog Voltage / Current
                                                                                                                                                                                                                                                                                                                                            Voltage Ranges	±1 V, 1–5 V, ±10 V
                                                                                                                                                                                                                                                                                                                                            Current Ranges	±20 mA, 4–20 mA
                                                                                                                                                                                                                                                                                                                                            Measurement Principle	Integrating
                                                                                                                                                                                                                                                                                                                                            Integration Time	50 / 60 ms
                                                                                                                                                                                                                                                                                                                                            Basic Conversion Time	55 / 65 ms
                                                                                                                                                                                                                                                                                                                                            50/60 Hz Noise Rejection	Supported
                                                                                                                                                                                                                                                                                                                                            Input Resistance	10 MΩ for ±1 V; 100 MΩ for ±10 V / 1–5 V
                                                                                                                                                                                                                                                                                                                                            Current Input Resistance	50 Ω
                                                                                                                                                                                                                                                                                                                                            2-Wire Transmitter	Supported
                                                                                                                                                                                                                                                                                                                                            4-Wire Transmitter	Supported
                                                                                                                                                                                                                                                                                                                                            Max. 2-Wire Transmitter Load	750 Ω
                                                                                                                                                                                                                                                                                                                                            Sensor Supply	24 VDC
                                                                                                                                                                                                                                                                                                                                            Backplane Current	Max. 100 mA
                                                                                                                                                                                                                                                                                                                                            Power Dissipation	Approx. 2 W
                                                                                                                                                                                                                                                                                                                                            Electrical Isolation	Non-isolated
                                                                                                                                                                                                                                                                                                                                            Max. Shielded Cable Length	200 m
                                                                                                                                                                                                                                                                                                                                            Dimensions	25 × 290 × 210 mm
                                                                                                                                                                                                                                                                                                                                            Approx. Weight	500 g
                                                                                                                                                                                                                                                                                                                                            Product Status	Phased out since Oct. 1, 2025

                                                                                                                                                                                                                                                                                                                                            Specifications are based on Siemens' S7-400 module documentation and current Industry Mall data.

                                                                                                                                                                                                                                                                                                                                            Advantages & Features

                                                                                                                                                                                                                                                                                                                                            • 16 analog input channels
                                                                                                                                                                                                                                                                                                                                            • 13-bit analog resolution
                                                                                                                                                                                                                                                                                                                                            • Supports both voltage and current signals
                                                                                                                                                                                                                                                                                                                                            • Supports common 4–20 mA industrial instrumentation
                                                                                                                                                                                                                                                                                                                                            • Supports ±10 V voltage signals
                                                                                                                                                                                                                                                                                                                                            • Integrating A/D conversion with 50/60 Hz interference suppression
                                                                                                                                                                                                                                                                                                                                            • Supports 2-wire and 4-wire current transmitters
                                                                                                                                                                                                                                                                                                                                            • Suitable for a wide range of industrial sensors
                                                                                                                                                                                                                                                                                                                                            • Designed for the proven SIMATIC S7-400 platform

                                                                                                                                                                                                                                                                                                                                            Typical Applications

                                                                                                                                                                                                                                                                                                                                            • Process control
                                                                                                                                                                                                                                                                                                                                            • Temperature, pressure and flow monitoring
                                                                                                                                                                                                                                                                                                                                            • 4–20 mA transmitter acquisition
                                                                                                                                                                                                                                                                                                                                            • Industrial instrumentation
                                                                                                                                                                                                                                                                                                                                            • Factory automation
                                                                                                                                                                                                                                                                                                                                            • Chemical and manufacturing systems
                                                                                                                                                                                                                                                                                                                                            • Power and utility automation
                                                                                                                                                                                                                                                                                                                                            • Legacy S7-400 control system replacement

.The structure and details of the product：

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