Product Overview
Technical Summary
| Product type designation | SB 1221, DI 4×5 V DC 200 kHz |
|---|---|
| Digital inputs | 4; Current-sourcing |
| Rated input voltage | 5 V |
| Input current from backplane bus | 5 V DC, typ. 40 mA |
| Power loss | 1 W |
| Diagnostics indication LED | for status of the inputs: Yes |
| Product lifecycle | Active Product |
Key Features
SB 1221 digital input with 4 current-sourcing digital inputs, arranged in groups of 4.
Rated input voltage: 5 V DC.
Product type designation: SB 1221, DI 4×5 V DC 200 kHz.
For signal "0": maximum 2.2 mA; for signal "1": minimum 5.1 mA and typical 15 mA.
Shielded cable length: maximum 50 m, shielded twisted pair. LED indication is provided for input status.
Frequently Asked Questions
What exact Siemens line item is this?
It is Siemens 6ES7221-3AD30-0XB0, product type SB 1221, DI 4×5 V DC 200 kHz.
How many digital inputs does the configuration have?
It has 4 current-sourcing digital inputs, in groups of 4.
What input voltage should be retained in the quotation?
The rated input voltage is 5 V DC.
What cable limit is specified?
The specified limit is a maximum 50 m shielded twisted-pair cable.
What should I provide for a project quotation?
Provide the requested quantity, destination, schedule context, and any additional BOM lines.
