Technical Summary
| Product type designation | SB 1221, DI 4×24 V DC 200 kHz |
|---|---|
| Product lifecycle | Active Product |
| Number of digital inputs | 4; Current-sourcing |
| Rated input voltage (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 |
| Parameterizable standard inputs | 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 |
| Diagnostics indication LED for status of the inputs | Yes |
Applications
Digital input signal acquisition
For reading 4 current-sourcing digital input signals in a SIMATIC S7-1200 controller system.
Key Features
Exact module designation
SB 1221, DI 4×24 V DC 200 kHz
Digital input capacity
4 digital inputs, current-sourcing
Input rating
Rated value (DC): 24 V
High-speed input specification
200 kHz
Lifecycle status
Active Product
Frequently Asked Questions
What is Siemens 6ES7221-3BD30-0XB0?
It is a SIMATIC S7-1200 SB 1221 digital input module with 4 DI.
What is the input rating of 6ES7221-3BD30-0XB0?
Rated value (DC): 24 V.
How many digital inputs does the SB 1221 have?
It has 4 digital inputs, current-sourcing.
What cable length is specified for 6ES7221-3BD30-0XB0?
The shielded cable length, max., is 50 m; shielded, twisted pair.
