Siemens 6AG1221-1BF32-2XB0 Digital Input Module
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Technical Specifications
| Parameter | Description |
|---|---|
| Product Model | 6AG1221-1BF32-2XB0 |
| Product Type | Digital Input Module |
| Product Series | SIPLUS S7-1200 |
| Base Model | 6ES7221-1BF32-0XB0 |
| Number of Digital Inputs | 8 |
| Input Voltage | 24 V DC |
| Permissible Voltage Range | 20.4–28.8 V DC |
| Input Type | Sink/Source |
| Input Groups | 4 groups, 2 inputs per group |
| Input Signal “0” | 5 V DC at 1 mA |
| Input Signal “1” | 15 V DC at 2.5 mA |
| Typical Input Current | 4 mA |
| Configurable Input Delay | 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8 ms |
| Backplane Bus Current | 5 V DC, max. 105 mA |
| Typical Power Loss | 1.5 W |
| Input Standard | IEC 61131 Type 1 |
| Operating Temperature | -40°C to +70°C |
| Startup Temperature | -25°C |
| Special Protection | Conformal Coating |
| Dimensions | 45 × 100 × 75 mm |
| Weight | 0.160 kg |
FAQ
1. What is the primary function of the 6AG1221-1BF32-2XB0 digital input module?
The 6AG1221-1BF32-2XB0 is an 8-channel digital input module designed for Siemens SIPLUS S7-1200 automation systems. It receives 24 V DC signals from field devices such as proximity switches, push buttons, limit switches, and other digital sensors. The module converts these field signals into digital information that the PLC CPU can process to execute control logic, monitor equipment status, and coordinate automated operations.
2. How many digital input channels does this module provide?
This module provides 8 digital input channels, arranged in groups of two. Each channel can receive a digital signal from a compatible field device. This configuration is suitable for monitoring multiple machine states, detecting sensor signals, and collecting on/off status information in industrial control applications. When designing the wiring, users should check the input grouping and common-terminal arrangement to ensure correct electrical connections.
3. What is the required operating voltage for the 6AG1221-1BF32-2XB0?
The module operates with a nominal input voltage of 24 V DC and supports a permissible voltage range of 20.4 to 28.8 V DC. The connected field devices and power supply should remain within this range to ensure reliable signal detection. Unstable voltage, excessive electrical noise, or incorrect grounding may cause intermittent input signals and unexpected PLC responses.
4. Is the 6AG1221-1BF32-2XB0 suitable for harsh industrial environments?
Yes. As a SIPLUS version of the S7-1200 digital input module, it features conformal coating for enhanced protection in demanding industrial environments. Its specified operating temperature range is -40°C to +70°C, with a startup temperature of -25°C. These characteristics make it suitable for applications exposed to wider temperature variations and environmental conditions. Installation should still follow Siemens’ environmental and enclosure requirements.
5. How can users configure the input delay time?
The input delay can be configured through the Siemens engineering environment, depending on the PLC project and supported module settings. Available delay values include 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, and 12.8 ms. A shorter delay provides faster response to signal changes, while a longer delay can help filter brief electrical disturbances or contact bounce. The selected value should match the response requirements of the connected sensors and control process.
6. Which field devices can be connected to this digital input module?
Compatible devices include 24 V DC proximity sensors, photoelectric sensors, mechanical limit switches, push buttons, selector switches, and relay contacts with suitable signal interfaces. Before connecting a device, verify its output type, voltage level, current requirements, and wiring polarity. The field device must provide electrical signals compatible with the module’s digital input specifications.
7. What should be checked if an input channel does not respond?
Start by checking the 24 V DC power supply and confirming that the voltage is within the specified range. Then inspect the wiring, terminal connections, common reference, and sensor output. Test the field device independently to determine whether it is producing a valid signal. If the wiring and sensor are functioning correctly, check the PLC hardware configuration, input address, and online input status. Persistent faults may indicate a damaged channel or an issue elsewhere in the control system.
8. Can the 6AG1221-1BF32-2XB0 replace the standard 6ES7221-1BF32-0XB0 module?
The 6AG1221-1BF32-2XB0 is based on the standard 6ES7221-1BF32-0XB0 model and belongs to the SIPLUS product range. However, replacement should not be determined by the base model number alone. Before installation, verify the hardware compatibility, environmental requirements, firmware and configuration support, terminal arrangement, and system documentation. This helps prevent commissioning problems and ensures that the replacement meets the operating requirements of the application.
Siemens 6AG1221-1BF32-2XB0 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.
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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.
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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.
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