Siemens 6ES7221-1BF22-0XA0 Digital Input Module

Siemens 

Siemens 6ES7221-1BF22-0XA0 Digital Input Module

- Product Description -

The Siemens 6ES7221-1BF22-0XA0 is a digital input expansion module for the SIMATIC S7‑200 PLC system. 

It is designed specifically to work with S7‑22X series CPUs, providing reliable acquisition of discrete sensor 

signals in industrial automation applications. The module offers eight 24 V DC digital inputs with both sinking 

and sourcing configurations, ensuring compatibility with a wide range of input devices. It features optically 

isolated inputs for improved noise immunity and signal integrity, compact dimensions for efficient panel 

installation, and easy plug‑in I/O connections for straightforward wiring and maintenance. 

- Product Parameters -

Model Number:6ES7221-1BF22-0XA0

Product Parameters:Digital Input Module

Manufacturer:Siemens

Digital Inputs: 8 channels

Input Voltage: 24 V DC

Input Type: Sinking/Sourcing

Input Current (from backplane 5 V DC): Max 30 mA

Power Loss (typical): 2 W

Input Current (signal “1” typical): 4 mA

Input Delay (“0” to “1” max): 4.5 ms

Shielded Cable Max Length: 500 m

Unshielded Cable Max Length: 300 m

Isolation: Optocoupler input isolation (groups of 4)

- Contact Us for More Information -

- Key Highlights -

1) Extensive Inventory — Over 30,000 commonly used and discontinued models

2) Tested & Guaranteed — Performance reports included, 1-year warranty

3) Global Customer Service — Multi-language support and fast response

4) Sourcing Hard-to-Find Parts — If out of stock, we quickly locate alternatives globally

5) Supports Popular & Rare Models — ABB, Allen‑Bradley, Honeywell, GE, Siemens, Bently Nevada, and more.

- Fast Global Shipping -

1–3 Day Dispatch for In-Stock Items:Most parts ship within 1–3 business days thanks to our 30,000+ industrial 

automation spare parts inventory.

Multiple Reliable Carriers:DHL, FedEx, UPS, and other priority services available with full tracking and insurance.

Emergency & Rare Part Sourcing:Can quickly locate discontinued or hard-to-find components globally.

Secure Packaging:Anti-static, shock-resistant packaging ensures your parts arrive safely.

- Technical & After-Sales Support -

Dedicated Multilingual Team:Pre-sales consultation, compatibility confirmation, and selection guidance from 

experienced engineers.

Fast Quotes & Response:Receive competitive pricing and shipping estimates quickly to minimize downtime.

Inspection & Verification:Optional product photos, videos, and test reports before shipment for peace of mind.

1-Year Warranty:Includes repair, replacement, or refund support according to our warranty policy.

- Automation Parts -

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