Siemens 6AG1221-3AD30-5XB0 Digital Input Module
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Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 6AG1221-3AD30-5XB0 |
| Brand | Siemens |
| Product Type | Digital Input Module |
| Product Series | SIPLUS S7-1200 |
| Module Type | SB 1221 |
| Base Model | 6ES7221-3AD30-0XB0 |
| Number of Digital Inputs | 4 DI |
| Number of Digital Outputs | 0 DO |
| Rated Input Voltage | 5 V DC |
| Input Type | Current-sourcing |
| Input Grouping | 4 inputs per group |
| Maximum Input Frequency | 200 kHz |
| Typical Input Current at Signal “1” | 15 mA |
| Typical Power Loss | 1 W |
| Backplane Bus Current | 5 V DC, typical 40 mA |
| Input Status Indication | LED |
| Conformal Coating | Yes |
| Operating Temperature | -40°C to +60°C |
| Startup Temperature | -25°C |
| Storage Temperature | -40°C to +70°C |
| Maximum Installation Altitude | 5,000 m |
| Protection Rating | IP20 |
| System Compatibility | SIMATIC S7-1200 |
| Dimensions | 38 × 62 × 21 mm |
| Weight | 0.029 kg |
FAQ
1. What is the main function of the Siemens 6AG1221-3AD30-5XB0 Digital Input Module?
The Siemens 6AG1221-3AD30-5XB0 is a SIPLUS SB 1221 digital input signal board designed for SIMATIC S7-1200 PLC systems. It provides four additional digital input channels for collecting 5 V DC signals from compatible field devices. The module is particularly suitable for applications requiring high-speed signal acquisition, such as pulse monitoring, sensor signal detection, and machine control. It plugs directly into the compatible S7-1200 CPU.
2. How many digital input channels does this module provide?
This module provides four digital input channels, arranged in one group. All four channels are designed for 5 V DC input signals. The compact signal board expands the input capacity of a compatible S7-1200 controller without requiring a separate full-size signal module. When planning the system, check the CPU compatibility and available signal board installation position.
3. What is the rated input voltage of the 6AG1221-3AD30-5XB0?
The module uses a rated input voltage of 5 V DC. It is designed for current-sourcing input signals, with a typical input current of 15 mA at signal “1”. This is an important difference from standard 24 V DC digital input modules. Connecting a 24 V DC signal directly to this module may damage the input circuit. Always verify the output voltage of the connected sensor or signal source before wiring.
4. What does the 200 kHz input frequency mean?
The 200 kHz specification indicates that the module supports high-frequency digital input signals up to 200,000 signal cycles per second under the specified operating conditions. This makes it suitable for applications involving fast pulse signals and high-speed sensor feedback. When designing a control system, the actual signal frequency, pulse width, wiring quality, and PLC processing configuration should all be considered to ensure reliable signal acquisition.
5. Which devices can be connected to this digital input signal board?
The module can be used with compatible 5 V DC signal sources, including electronic pulse generators, suitable sensors, and other devices that provide matching digital output signals. Before connection, verify the output voltage, signal current, switching frequency, and electrical interface. A sensor designed exclusively for 24 V DC inputs or outputs should not be connected directly without an appropriate signal conversion interface.
6. Can the 6AG1221-3AD30-5XB0 be installed directly on an S7-1200 CPU?
Yes. The SB 1221 is a signal board designed to plug directly into a compatible SIMATIC S7-1200 CPU. This installation method allows users to expand the controller’s digital input capacity without adding a conventional expansion module. Before installation, check the CPU model, available signal board position, and hardware configuration requirements. The PLC project should also be updated to reflect the installed hardware.
7. What environmental conditions can this SIPLUS module withstand?
The 6AG1221-3AD30-5XB0 features conformal coating and supports an operating temperature range of -40°C to +60°C. Its specified startup temperature is -25°C. These characteristics make it suitable for industrial applications where temperature variations and environmental exposure may be more demanding than those in standard indoor installations. Proper enclosure protection, ventilation, grounding, and wiring practices are still necessary for reliable operation.
8. How should users troubleshoot signal acquisition problems?
If the PLC cannot detect an input signal, first verify that the signal source provides the required 5 V DC level and sufficient input current. Next, inspect the signal board installation, connector contacts, wiring polarity, and signal ground. Check whether the input frequency exceeds the supported 200 kHz limit and whether the pulse signal is stable. The input status LEDs can help identify channel activity. If the electrical signal is correct but the PLC still does not recognize it, review the hardware configuration, input addressing, and CPU diagnostic information.
Siemens 6AG1221-3AD30-5XB0 Digital Input Module is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Company Introduction
Xiamen Shengruite Trading Co., Ltd. is a company specializing in the supply of industrial PLC spare parts.
We provide high-quality PLC spare parts to customers in the global manufacturing, energy and power, chemical and other fields.
Since its establishment in 2011, after 13 years of rapid development, the cumulative global shipments have reached 223,650 pieces, with an annual output value of US$50 million.
Successfully served more than 500 customers in more than 100 countries and regions including Saudi Arabia, UAE, the United States, Europe, Africa, and Southeast Asia
Our Mission
Provide customers with the best quality PLC spare parts and the fastest delivery service to ensure that their industrial automation systems are always in the best operating condition.
We provide a 1-year warranty service, and we support returns and exchanges for any issues to ensure your rights and interests are fully protected.
We can provide detailed product images upon request, and our team can arrange warehouse photos for confirmation to ensure you have all the information you need before making a purchase.
Shipping times vary depending on your location. With the support of our 16 global warehouses, we strive to deliver orders as quickly as possible. Contact us to get an estimated delivery time for your specific location.
The minimum order quantity (MOQ) is typically one unit. However, for larger orders, please contact us for potential discounts and pricing details.
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We accept various payment methods for wholesale orders, including bank transfers (T/T), letters of credit, and other options upon agreement. For large transactions, please contact us directly for payment terms.
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We occasionally offer promotional discounts for new wholesale customers. Contact us to learn more about any current offers available for first-time buyers.
If you are unsure of compatibility with your existing setup please provide your system details and our support team can verify compatibility prior to purchase.
Returns are accepted within 30 days if the product is unused, unopened, and in its original packaging. Please note that return shipping and associated costs are the buyer\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s responsibility.
Yes, we offer technical support for the installation and integration of our products. Our team can assist with setup, configuration, and troubleshooting to ensure a smooth installation.
