Siemens 6ES7 331-1KF02-0AB0 Analog input SM 331 6ES73311KF020AB0
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Siemens 6ES7 331-1KF02-0AB0 | SIMATIC S7-300 SM 331 Analog Input Module
Product Overview
The 6ES7 331-1KF02-0AB0 (also known as 6ES73311KF020AB0) is a high-performance analog input module from the SIMATIC S7-300 family, designed for reliable signal acquisition in industrial automation and process control systems. It features 8 isolated analog input channels with broad signal compatibility, supporting voltage, current, resistance, and resistance thermometer (RTD) measurements. With 13-bit resolution and galvanic isolation between channels and the backplane bus, it ensures high immunity to electromagnetic interference (EMI) and stable operation in harsh industrial environments. As a modular expansion component, it seamlessly integrates into S7-300 controllers via the backplane bus, enabling flexible system scaling for applications like manufacturing, energy management, and environmental monitoring.
Key Functions
- Multi-Signal Acquisition: Supports voltage (0–10 V, ±10 V, ±1 V, etc.), current (0–20 mA, 4–20 mA, etc.), resistance, and RTD signals (Pt100, Ni100, Ni1000, etc.), eliminating the need for separate modules for different signal types.
- High Accuracy & Resolution: Delivers 13-bit resolution (including sign) for precise measurements, with typical accuracy of ±0.1%–±0.2% for voltage/current signals, ensuring reliable data for critical control tasks.
- Galvanic Isolation: Provides 500 V DC isolation between each input channel and the backplane bus, protecting the CPU and other modules from ground potential differences and noise in long-distance wiring.
- Configurable Parameters: Allows channel-specific setup of signal ranges, integration times (50/60 ms), and measurement modes via STEP 7 software, with no hardware jumpers required for flexibility.
- Diagnostic Capabilities: Features built-in self-diagnostics to detect sensor breaks, range configuration errors, and overloads, with status indicators for quick troubleshooting.
- Efficient Data Conversion: Performs analog-to-digital conversion in approximately 66 ms per channel, balancing speed and noise immunity for industrial applications.
Technical Features
Core Specifications
表格
| Category | Parameter | Value |
|---|---|---|
| Product Identity | Module Type | SM 331 Analog Input |
| Series | SIMATIC S7-300 | |
| Part Number | 6ES7 331-1KF02-0AB0 / 6ES73311KF020AB0 | |
| Input Configuration | Number of Channels | 8 (isolated) |
| Supported Signals | Voltage, Current, Resistance, RTD (Pt100, Ni100, Ni1000, LG-Ni1000, PTC, KTY) | |
| Input Resistance (Voltage) | 100 kΩ (for 0–10 V, 1–5 V ranges) | |
| Max Permissible Input Voltage | 30 V (destruction limit; 12 V continuous, 30 V for ≤1 s) | |
| Max Permissible Input Current | 40 mA (destruction limit) | |
| Performance | Resolution | 13 bits (including sign) |
| Conversion Time | ~66 ms | |
| Integration Time | Configurable (50 ms / 60 ms) | |
| Power & Bus | Backplane Bus Current | 5 V DC, max 90 mA |
| Typical Power Loss | 0.4 W | |
| Isolation | 500 V DC (channel to backplane bus) | |
| Connection | Front Connector | 40-pole |
| Software | Programming | STEP 7 |
Environmental Specifications
表格
| Parameter | Value |
|---|---|
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5% to 95% (non-condensing) |
| Protection Rating | IP20 |
| Shock/Vibration | Complies with IEC 60068-2-6/2-27 |
Physical Dimensions & Weight
表格
| Parameter | Value |
|---|---|
| Dimensions (W × H × D) | 40 mm × 125 mm × 117 mm (compact, space-saving for S7-300 racks) |
| Net Weight | Approx. 250 g (lightweight for easy installation/handling) |
| Mounting | Standard 35 mm DIN rail (EN 60715 TS35), compatible with S7-300 central processing units (CPUs) and other modules |
WHO WE ARE
About us
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
Where is your company located?
We are located next to Shanghai, the largest city in China, and Kunshan, the first economic county in China. With convenient transportation and developed logistics, it provides a good geographical advantage for our electronic components sales business.
What types of electronic components does your company mainly sell?
We are committed to providing many types and brands of electronic components, including but not limited to Sensors, Switches & Relays, Connectors, Circuit Protectio, Power Supplier & Cable, etc. We have established relationships with many well-known electronic component manufacturers. We have established long-term and stable relationships with many well-known electronic component manufacturers to ensure that the products we sell are of reliable quality and reasonable price.
What are the prices of your products?
Our product prices vary according to market conditions and product models. We are committed to providing high quality electronic components at fair and reasonable prices, and offer our customers a variety of incentives and flexible purchasing methods.
How to purchase your electronic components?
You can contact our customer service staff directly by phone, whatsapp, email, our official website. We support a variety of payment methods, and provide you with fast and safe logistics and distribution services.
How do you guarantee the quality of your products?
We attach great importance to product quality, all the electronic components we sell come from regular channels and undergo strict quality testing. We promise to provide customers with high-quality electronic components, and provide perfect after-sales service to ensure that customers have no worries in the process of use.
If I am not satisfied with the electronic components I purchased, can I return them?
We provide perfect after-sales service, if you are not satisfied with the purchased electronic components, you can return or exchange them within the specified time. Please refer to our official website or consult our customer service staff for the specific return policy and process.
Can your company provide technical support and solutions?
We have a professional technical team that can provide technical support and solutions for our customers. Whether you encounter any problems in choosing or using the products, we will be happy to answer your questions and provide professional technical support.
How to contact your customer service?
You can contact our customer service personnel through the online customer service system on our official website, telephone, e-mail or social media platforms. Our customer service staff will provide you with professional services and answer any questions you may have.
Does your company often organize promotional activities?
In order to give back to our customers, we will organize various promotions from time to time, including discounts, full reductions, giveaways and so on. Please keep an eye on our official website or social media platforms to stay up-to-date with the latest promotions.
