Product Overview
Technical Summary
| Product designation | SB 1221, DI 8x 24 V DC 100 kHz |
|---|---|
| Digital inputs | 8; sink/source |
| Rated input voltage | 24 V DC |
| Input frequency | 100 kHz |
| STEP 7 TIA Portal version | V20 or higher |
| Diagnostics function | Yes |
| Diagnostic alarm | No |
| Potential separation between channels | No |
| IP degree of protection | IP20 |
| Product lifecycle | Active Product |
Key Features
- Product designation: SB 1221, DI 8x 24 V DC 100 kHz.
- Digital inputs: 8 digital inputs, sink/source, arranged in 1 group of 8.
- Rated input voltage: 24 V DC.
- Input signal thresholds: Signal "0": 5 V DC or 0.5 mA; signal "1": 15 V DC at 2.5 mA.
- Configuration and diagnostics: Configurable or integrated with STEP 7 TIA Portal V20 or higher; diagnostics function and DIAG LED are available.
- Protection and dimensions: IP20; packaging dimensions are 82.00 x 34.00 x 79.00 mm and net weight is 0.048 kg.
Frequently Asked Questions
What does Siemens 6ES7221-3BF50-0XB0 identify?
It identifies the SIMATIC S7-1200 G2 SB 1221 digital input module with 8 DI, 24 V DC, and 100 kHz.
Which specifications distinguish this exact module variant?
Check the complete 6ES7221-3BF50-0XB0 code together with 8 sink/source digital inputs, 24 V DC rated input voltage, and 100 kHz input capability.
What configuration details should be checked before quotation?
Check the complete order number, the nameplate, STEP 7 TIA Portal V20 or higher, the input count, signal thresholds, cable type and length, and IP20 protection.
What quantity and destination are needed for a quotation?
Provide the required quantity and destination together with the complete 6ES7221-3BF50-0XB0 order number.
