Key Features
- SIMATIC S7-1200 digital input SB 1221: Digital input module for the SIMATIC S7-1200 platform.
- 4 digital inputs: Number of digital inputs: 4; Current-sourcing.
- 24 V DC, 200 kHz: Rated value (DC): 24 V; product type designation: SB 1221, DI 4×24 V DC 200 kHz.
- Parameterizable input functions: For standard inputs: parameterizable; for interrupt inputs: parameterizable; for technological functions: parameterizable.
- Input status diagnostics: Diagnostics indication LED for status of the inputs: Yes.
- Shielded cable length: Cable length, shielded, max.: 50 m; shielded, twisted pair.
Applications
- 24 V DC input signal acquisition: Reading 24 V DC current-sourcing input signals in an S7-1200 input setup.
- High-speed digital signal capture: Capturing input signals at 200 kHz.
Technical Summary
| Product type designation | SB 1221, DI 4×24 V DC 200 kHz |
|---|---|
| Number of digital inputs | 4; Current-sourcing |
| Rated value (DC) | 24 V |
| Input current from backplane bus 5 V DC, typ. | 40 mA |
| Power loss, typ. | 1 W |
| Input current for signal "0", max. (permissible quiescent current) | 1.4 mA |
| Input current for signal "1", min. | 2.9 mA |
| Input current for signal "1", typ. | 7 mA |
| Diagnostics indication LED for status of the inputs | Yes |
| Standard inputs parameterizable | Yes; 0.1 / 0.2 / 0.4 / 0.8 / 1.6 / 3.2 / 6.4 / 10.0 / 12.8 / 20.0 μs; 0.05 / 0.1 / 0.2 / 0.4 / 0.8 / 1.6 / 3.2 / 6.4 / 10.0 / 12.8 / 20.0 ms |
| Interrupt inputs parameterizable | Yes |
Frequently Asked Questions
What is Siemens 6ES7221-3BD30-0XB0?
It is a SIMATIC S7-1200 digital input SB 1221 module.
How many digital inputs does 6ES7221-3BD30-0XB0 provide?
It provides 4 digital inputs and uses a current-sourcing input type.
What input voltage is specified for this SB 1221 module?
The rated input voltage is 24 V DC.
What signal speed is associated with 6ES7221-3BD30-0XB0?
The product type designation includes 200 kHz.
What selection details should be checked for this digital input module?
Check the 4 digital inputs, 24 V DC rating, current-sourcing input type, 50 m shielded cable length, and input diagnostics.
