
6ES7221-1BF32-0XB0 - Siemens
MPN6ES7221-1BF32-0XB0
Active
SIMATIC S7-1200, Digital input SM 1221, 8 DI, 24 V DC, Sink/Source
$88.90 – $216.32Ref. price · indicative, final on quote
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MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jun 2026
Specifications
Inputs
| Parameter | Value |
|---|---|
| Number of digital inputs | 8 |
| Max. inputs, up to 40 °C | 8 |
Electrical
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V |
| Input voltage at signal "1" | 15 V DC at 2.5 mA |
| Input voltage at signal "0" | 5 V DC at 1 mA |
| Permissible range, lower limit (DC) | 20.4 V |
| Permissible range, upper limit (DC) | 28.8 V |
| Input current at signal "1" (typ.) | 4 mA |
| Input current at signal "0", max. (permissible quiescent current) | 1 mA |
| Power loss (typ.) | 1.5 W |
| Current consumption from backplane bus (5 V DC), max. | 105 mA |
| Cable length, unshielded, max. | 300 m |
| Cable length, shielded, max. | 500 m |
Timing
| Parameter | Value |
|---|---|
| Input delay, parameterizable values | Yes |
Environmental
| Parameter | Value |
|---|---|
| Max. ambient temperature, horizontal installation | 60 °C |
Diagnostics & Isolation
| Parameter | Value |
|---|---|
| Diagnostic alarm | Yes |
| Channels per isolated group | 2 |
Mechanical
| Parameter | Value |
|---|---|
| Depth | 75 mm |
| Height | 100 mm |
| Width | 45 mm |
MPN
6ES7221-1BF32-0XB0