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Siemens 6ES7331-7NF00-0AB0 Programmable Logic Controller
The Siemens 6ES7331-7NF00-0AB0 Programmable Logic Controller from the SIMATIC S7-300 Series features the SM 331 8 AI Analog Input Module engineered for precise analog signal measurement in industrial automation environments. Developed by Siemens AG, it supports 8 isolated analog inputs with ranges of ±5/10V, 1–5V, ±20mA, and 0/4–20mA, achieving 16-bit resolution and stable performance at 55 ms conversion time. It provides excellent signal isolation (50V common mode) and diagnostic reliability for process and temperature measurement. Integrated into the Siemens PLC architecture, the 6ES7331-7NF00-0AB0 ensures accurate analog data acquisition for applications like material processing, packaging automation, and machine control across industries in India.
| Brand | Siemens |
| Product Type | Programmable Logic Controller (PLC) |
| Product | 6ES7331-7NF00-0AB0 |
Siemens 6ES7331-7NF00-0AB0 Programmable Logic Controller – Technical Specifications
| Specification | Value |
|---|---|
| Product Description | SIMATIC S7-300, Analog input SM 331, isolated, 8 AI; +/-5/10V, 1-5 V, +/-20 mA, 0/4 to 20 mA, 16 bit (55ms), Single rooting (50 V COM.), 1x 40-pole |
| Product family | SM 331 analog input modules |
| Product Lifecycle (PLM) | PM400:Phase Out Started |
| Net Weight (kg) | 0,311 Kg |
| Packaging Dimension | 12,80 x 15,20 x 5,20 |
| Package size unit of measure | CM |
| Country of origin | Germany |
The Siemens 6ES7331-7NF00-0AB0 Programmable Logic Controller(PLC) is an analog input module from the SM 331 family, engineered for high-accuracy signal acquisition. It supports 8 isolated analog inputs with ranges including ±5/10V, 1–5 V, ±20 mA, and 0/4–20 mA, making it highly versatile for field instrumentation. With a resolution of 16-bit at 55 ms sampling time, it ensures precision even in complex process environments. Its 40-pole connector simplifies wiring, while the isolation up to 50 V COM safeguards against electrical disturbances. Weighing only 0.311 kg and measuring 12.8 × 15.2 × 5.2 cm, it offers a compact yet durable design, well suited for tight control cabinets. Manufactured in Germany under Siemens’ strict quality standards, it maintains long-term reliability even under industrial stress. Although it falls under the PM400: Phase Out Started lifecycle, the 6ES7331-7NF00-0AB0 remains widely used in expansions and retrofits due to its compatibility and robust build. Engineers continue to trust this module for critical automation tasks where signal integrity and reliability are essential.
In practical applications, the 6ES7331-7NF00-0AB0 is deployed in industries such as chemical processing, material handling, utilities, and manufacturing plants requiring stable analog data acquisition. Its ability to handle current and voltage inputs makes it valuable for connecting transmitters, flow meters, pressure sensors, and temperature devices directly to the PLC system. Maintenance teams appreciate its straightforward diagnostics and durable design, which minimize downtime during replacement or integration. For engineering students and technicians, the Siemens SIMATIC S7-300 8 AI SM331 provides a strong foundation for learning PLC signal handling, analog conversions, and field integration. Even as newer models emerge, this module remains relevant for plants seeking proven Siemens reliability, ease of use, and consistent performance in automation networks.
Before purchase, many buyers refer to the 6ES7331-7NF00-0AB0 manual, check the 6ES7331-7NF00-0AB0 price, or download the 6ES7331-7NF00-0AB0 datasheet to verify details such as supported ranges, dimensions, and weight (0.311 kg). Alternate references like 6ES7331 7NF00 0AB0 and 6es73317nf000ab0 ensure correct identification during procurement. With Siemens’ German engineering excellence and the trusted legacy of the Siemens SIMATIC S7-300 8 AI SM331 range, the 6ES7331-7NF00-0AB0 continues to be a dependable choice for industrial automation projects worldwide.
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