Input Current (from backplane bus): 5 V DC, max. 30 mA

Power Loss: Typ. 2 W

Digital Inputs: 8

Input Voltage:

Type of input voltage: DC

For signal "0": 0 to 5 V

For signal "1": +15 to +30 V

Input Current (for signal "1"): Typ. 4 mA

Dimensions:

Width: 46 mm

Height: 80 mm

Depth: 62 mm

Weight: .150 g

The Siemens 6ES7221-1BF22-0XA0 is a digital input module from the SIMATIC S7-200 series, designed exclusively for use with S7-22X CPUs. This module offers eight digital inputs, each operating at 24 V DC and supporting both sinking and sourcing configurations. The 6ES7221-1BF22-0XA0 is engineered for seamless integration into industrial environments, providing reliable signal acquisition and consistent performance in demanding production settings. Its robust design ensures long-term operation, while easy installation minimizes downtime for maintenance or upgrades. The compact form factor of the 6ES7221-1BF22-0XA0 makes it suitable for control cabinets where space is at a premium.

Frequently asked questions：

Q1: What is the Siemens 6ES7221-1BF22-0XA0 used for?

A: It is used as a digital input module to acquire signals from field devices for Siemens S7-200 PLCs.

Q2: How many digital inputs does this module support?

A: It supports 8 digital inputs.

Q3: Is this module compatible with Siemens S7-200 PLCs?

A: Yes, it is designed specifically for S7-200 series PLCs.

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