Product Overview
Technical Summary
| Product type designation | SB 1221, DI 8x 24 V DC 100 kHz |
|---|---|
| Digital inputs | 8; sink / source |
| Rated input voltage | 24 V DC |
| STEP 7 TIA Portal version | V20 or higher |
| Input current from backplane bus | 108 mA, typ. |
| Power loss | 2.4 W, typ. |
| Protection degree | IP20 |
Key Features
8 digital inputs, sink/source, arranged in groups of 8.
Rated input voltage: 24 V DC; signal “0”: 5 V DC or 0.5 mA; signal “1”: 15 V DC at 2.5 mA.
The product designation specifies DI 8x 24 V DC 100 kHz.
Configurable/integrated from STEP 7 TIA Portal version V20 or higher.
Maximum shielded cable length: 500 m; 50 m shielded for HSC inputs. Maximum unshielded cable length: 300 m.
Packaging dimensions L x W x H: 82.00 x 34.00 x 79.00 mm; net weight: 0.048 kg; protection degree: IP20.
Frequently Asked Questions
What is the exact product type of 6ES7221-3BF50-0XB0?
It is an SB 1221 digital input module with 8 DI at 24 V DC and 100 kHz.
How many digital inputs does this module have?
It has 8 digital inputs with sink/source capability, arranged in groups of 8.
Which STEP 7 TIA Portal version supports configuration and integration?
Configuration and integration are supported from STEP 7 TIA Portal V20 or higher.
What cable lengths are specified for this line item?
The maximum is 500 m for shielded cable, 50 m shielded for HSC inputs, and 300 m for unshielded cable.
What should I provide for a project quotation?
Provide the requested quantity, destination, schedule context, and any additional BOM lines.
