Siemens
Siemens SIMATIC S7-1200 4-Channel Digital Input SB 1221
Siemens SIMATIC S7-1200 Digital Input SB 1221, 4 DI, 200kHz
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4 High-Speed Digital Inputs
200 kHz Response Time
24V DC Operation
Sourcing Input Configuration
For S7-1200 CPUs
Compact Design
Product description
The Siemens 6ES7221-3BD30-0XB0 is a compact digital input signal board for the SIMATIC S7-1200 series. It features 4 digital inputs operating at 24V DC with a fast response time of 200 kHz, specifically configured for sourcing inputs.
This high-speed input board is suitable for demanding applications in motion control, high-frequency counting, or fast signal detection within the S7-1200 automation platform.
Stanlo Automation, your reliable veteran-owned source for surplus industrial automation parts, provides the 6ES7221-3BD30-0XB0 to meet your specific high-speed input requirements.
Technical specifications
| Type | Digital Input Board |
| Series | SIMATIC S7-1200 |
| Model | SB 1221 |
| Inputs | 4 DI |
| Voltage | 24 V DC |
| Speed | 200 kHz |
| Configuration | Sourcing |
Common applications
Motion Control
High-Speed Counting
Fast Signal Detection
Industrial Automation
Machine Control
PLC Expansion
Compatible systems
SIMATIC S7-1200 CPUs
Also known as
Siemens SB1221
S7-1200 4DI 200kHz
6ES72213BD300XB0
Replaces / compatible with
This SB 1221 signal board is designed for the Siemens S7-1200 series, offering high-speed digital input capabilities. It serves as an expansion for S7-1200 CPUs requiring fast signal acquisition.
Technical note
Expert tip
This module must be wired as a sourcing input, meaning the external device provides the voltage to the input signal.What happens next?
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Frequently asked questions
What is the maximum input frequency for the Siemens 6ES7221-3BD30-0XB0 module?
The Siemens 6ES7221-3BD30-0XB0 SB 1221 module supports digital inputs with a maximum frequency of 200 kHz. This makes it ideal for high-speed counting and motion control applications.