Description
The Siemens 6ES7331-7KB02-0AB0 (SM331) is a high-precision analog input module designed for the SIMATIC S7-300 PLC platform. It provides 2 isolated analog input channels, enabling accurate acquisition of industrial process signals.
With selectable 9-, 12-, or 14-bit resolution, the module ensures flexibility between speed and measurement precision. It supports multiple signal types including voltage (U), current (I), thermocouples, and resistance sensors, making it suitable for a wide range of industrial instrumentation and monitoring applications.
Integrated diagnostics and alarm functions enhance system reliability by detecting faults and abnormal conditions early. The module features a 20-pole removable front connector and supports active backplane bus insertion and removal, simplifying maintenance and system expansion.
This SM331 module is ideal for process automation, machine control, and industrial monitoring systems requiring stable and precise analog signal processing.
Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Part Number | 6ES7331-7KB02-0AB0 |
| Model | SM331 |
| System | SIMATIC S7-300 |
| Number of Inputs | 2 Analog Inputs |
| Input Types | Voltage, Current, Thermocouple, Resistance |
| Resolution | 9 / 12 / 14 Bit (Selectable) |
| Isolation | Yes (Isolated Channels) |
| Diagnostics | Integrated |
| Alarm Function | Yes |
| Connector Type | 1 × 20-Pole Removable |
| Backplane | Active Backplane Bus |
| Packaging Dimensions (L × W × H) | 15.1 × 12.8 × 5.0 cm |
| Net Weight | 0.249 kg |
| Application | Industrial Process Measurement & Control |
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