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Home Product 6ES7221-3BD30-0XB0 Siemens S7-200 PLC Digital Input Module 8x24VDC SM 221 Expansion
6ES7-221-3BD30-0XB0

6ES7221-3BD30-0XB0 Siemens S7-200 PLC Digital Input Module 8x24VDC SM 221 Expansion

Siemens 6ES7221-3BD30
SIMATIC S7-300 DI
6ES7221 Digital Input
6ES7221-3BD30-0XB0
Siemens 6ES7221-3BD30 Digital Input Module for SIMATIC S7-300 PLC systems. Offers 16-channel 24V DC digital input with high-density design. Supports industrial automation signal processing and integration in harsh environments.
Categories:Automation
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Product Description

The Siemens 6ES7221-3BD30-0XB0 is a SIMATIC S7-300 DI (Digital Input) module designed for industrial automation systems. This 6ES7221 Digital Input unit features 16 digital inputs compatible with 24V DC signals, enabling direct connection to sensors or switches. Integrated into the S7-300 PLC system via a backplane bus, it supports seamless scalability within racks. Operating at 20.4-28.8V DC with a temperature range of 0-60°C, it is ideal for harsh environments in manufacturing, process control, and machinery. The module offers high noise immunity, LED status indicators per channel, and simple front-terminal wiring. Key advantages include robust construction, rapid response times (<1ms), and plug-and-play compatibility with S7-300 systems. Limitations include no intrinsic safety certification for hazardous areas. Its compact design (40mm width) optimizes control cabinet space without compromising performance.
Parameter Specification
Module Type Siemens 6ES7221-3BD30 (SIMATIC S7-300 DI)
Number of Inputs 16 Digital Inputs
Rated Input Voltage 24 V DC
Power Consumption (Backplane) 5 V DC / 40 mA
Power Consumption (External) 24 V DC / 0 mA
Input Delay (0.1 to 3 ms) Configurable
Isolation Optical Isolation between Channels and Backplane
Connection Type Screw Terminal
Diagnostics Short-Circuit Detection
Certification CE, UL, ATEX
question:Why is the shipping cost high? Are there cheaper options?
answer:Shipping costs reflect reliable carriers for safe delivery. We offer cost-effective options with longer transit times to balance affordability and security.
question:What advantages does your company offer over competitors?
answer:As Asia's leading industrial automation supplier with 20+ years expertise, we prioritize quality, reliability, and long-term client trust, proven by 85% repeat business.
question:Can you guarantee consistent product supply?
answer:Yes, our established supplier networks and efficient logistics ensure stable inventory and timely delivery to meet customer demands seamlessly.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Why is the shipping cost high? Are there cheaper options?
answer:Shipping costs reflect reliable carriers for safe delivery. We offer cost-effective options with longer transit times to balance affordability and security.
question:What advantages does your company offer over competitors?
answer:As Asia's leading industrial automation supplier with 20+ years expertise, we prioritize quality, reliability, and long-term client trust, proven by 85% repeat business.
question:Can you guarantee consistent product supply?
answer:Yes, our established supplier networks and efficient logistics ensure stable inventory and timely delivery to meet customer demands seamlessly.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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