Product Overview
Technical Summary
| Product designation | SB 1221, DI 4×24 V DC 200 kHz |
|---|---|
| Digital inputs | 4; current-sourcing, in groups of 4 |
| Rated input voltage | 24 V DC |
| Input current from backplane bus | 40 mA typical at 5 V DC |
| Signal "0" input current | 1.4 mA maximum |
| Signal "1" input current | 2.9 mA minimum; 7 mA typical |
| Power loss | 1 W typical |
| Input-status LED | Yes |
Key Features
- Product designation: SB 1221, DI 4×24 V DC 200 kHz
- Digital inputs: 4 digital inputs; current-sourcing, in groups of 4
- Rated input voltage: 24 V DC
- Input current: 40 mA typical from the backplane bus at 5 V DC; 7 mA typical for signal "1"
- Parameterizable inputs: Standard, interrupt, and technological-function inputs are parameterizable. Standard input times: 0.1 / 0.2 / 0.4 / 0.8 / 1.6 / 3.2 / 6.4 / 10.0 / 12.8 / 20.0 μs and 0.05 / 0.1 / 0.2 / 0.4 / 0.8 / 1.6 / 3.2 / 6.4 / 10.0 / 12.8 / 20.0 ms
- Diagnostics and cable: Input-status LED indication; shielded twisted-pair cable up to 50 m
Frequently Asked Questions
What does 6ES7221-3BD30-0XB0 identify?
It identifies the SIMATIC S7-1200 SB 1221 digital input module with 4 DI, 24 V DC, and 200 kHz.
Which specifications distinguish this digital input variant?
The distinguishing specifications are 4 current-sourcing digital inputs, 24 V DC rated input, 200 kHz capability, and inputs in groups of 4.
What code and nameplate details should be checked?
Check the complete order number 6ES7221-3BD30-0XB0 and the product designation SB 1221, DI 4×24 V DC 200 kHz.
What information is needed for a quotation?
Provide the required quantity and destination for the quotation.
