The Siemens SIMATIC S7-400 SM 431 (6ES7431-0HH00-0AB0) is a high-performance analog input module featuring 16 non-isolated channels for precise signal measurement. Designed for integration into SIMATIC S7-400 PLC architectures, it supports standard voltage and current signals, including ±10 V, ±20 mA, and 4–20 mA. This module delivers reliable signal conversion with a 13-bit resolution and a fast 20 ms conversion time for demanding industrial process control.
The Siemens 6ES7431-0HH00-0AB0 SM 431 analog input module expands the input processing capabilities of the SIMATIC S7-400 programmable logic controller system. Equipped with 16 non-isolated analog input channels, it allows industrial automation systems to interface with sensors and field devices.
Main Features
This module provides 16 non-isolated analog input channels with 13-bit resolution. It supports multiple input ranges for voltage and current signals, including ±10 V, ±20 mA, and 4–20 mA. The module is designed for accurate analog signal acquisition and reliable data processing in SIMATIC S7-400 industrial automation systems.
Benefits
By offering 16 channels in a single slot, the SM 431 reduces backplane space requirements and installation overhead in industrial control panels. Its high resolution provides reliable data acquisition, allowing operators to monitor operational parameters accurately. Plug-in connection compatibility simplifies field wiring and unit replacement.
Applications
The module is designed for continuous process monitoring and control across factory automation environments. It connects to pressure transmitters, flow meters, temperature sensors, and level transducers in heavy manufacturing, power generation, water treatment, and chemical processing plants.
| Specification | Details |
| Brand | Siemens |
| Model | 6ES7431-0HH00-0AB0 |
| Product Type | SIMATIC S7-400 Analog Input Module (SM 431) |
| Number of Inputs | 16 Channels (Non-isolated) |
| Analog Resolution | 13 Bit |
| Conversion Time | 20 ms |
| Input Ranges (Voltage) | $\pm10\text{ V}$ |
| Input Ranges (Current) | $\pm20\text{ mA}$, $4\text{–}20\text{ mA}$ |
| Supply Voltage | 24V DC |
| Power Loss | 2 W |
| Dimensions (W x H x D) | 25 x 290 x 210 mm |
| Weight | Approx. 0.81 kg |
| Warranty | Standard Manufacturer Warranty |
Q: What is the main purpose of the Siemens 6ES7431-0HH00-0AB0 module?
A: It converts analog signals from field sensors (such as pressure, flow, and level transmitters) into digital data for processing by a Siemens SIMATIC S7-400 PLC system.
Q: How many analog inputs are available on this module?
A: The module features 16 non-isolated analog input channels.
Q: What signal types does the module support?
A: It supports voltage input of $\pm10\text{ V}$ and current inputs of $\pm20\text{ mA}$ and $4\text{–}20\text{ mA}$.
Q: What is the resolution and conversion speed of the SM 431 module?
A: It operates at a 13-bit resolution with a conversion time of 20 ms.
Q: Is this module compatible with other Siemens S7 series systems?
A: No, this SM 431 module is engineered specifically for the Siemens SIMATIC S7-400 automation system architecture.
Q: Does the module require a separate front connector for wiring?
A: Yes, wiring to the module is accomplished through a compatible S7-400 front connector system.
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