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Siemens 6ES7221-1BF32-0XB0
SIMATIC S7-1200, Digital input SM 1221, 8 DI, 24 V DC, Sink/Source
- MPN
- 6ES7221-1BF32-0XB0
- Category
- SM 1221 digital input modules
Price and lead time confirmed within 1 business day
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- 12-month warranty (new) · 3-month (used/refurbished)
- 30-day returns, no restocking fee on unused parts
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What is the Siemens 6ES7221-1BF32-0XB0?
SIMATIC S7-1200, Digital input SM 1221, 8 DI, 24 V DC, Sink/Source
Specifications
General information
| Product type designation | SM 1221, DI 8x24 V DC |
Supply voltage
| Rated value (DC) | 24 V |
| permissible range, lower limit (DC) | 20.4 V |
| permissible range, upper limit (DC) | 28.8 V |
Input current
| from backplane bus 5 V DC, max. | 105 mA |
| Digital inputs — from load voltage L+ (without load), max. | 4 mA; per channel |
Output voltage
| Power supply to the transmitters — present | Yes |
Power loss
| Power loss, typ. | 1.5 W |
Digital inputs
| Number of digital inputs | 8 |
| Number of digital inputs — in groups of | 2 |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
| Number of simultaneously controllable inputs — all mounting positions — up to 40 °C, max. | 8 |
| Number of simultaneously controllable inputs — horizontal installation — up to 40 °C, max. | 8 |
| Number of simultaneously controllable inputs — horizontal installation — up to 50 °C, max. | 8 |
| Number of simultaneously controllable inputs — vertical installation — up to 40 °C, max. | 8 |
| Input voltage — Rated value (DC) | 24 V |
| Input voltage — for signal "0" | 5 V DC at 1 mA |
| Input voltage — for signal "1" | 15 V DC at 2.5 mA |
| Input current — for signal "0", max. (permissible quiescent current) | 1 mA |
| Input current — for signal "1", min. | 2.5 mA |
| Input current — for signal "1", typ. | 4 mA |
| Input delay (for rated value of input voltage) — for standard inputs — parameterizable | Yes; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four |
| Input delay (for rated value of input voltage) — for interrupt inputs — Parameterizable | Yes |
| Cable length — shielded, max. | 500 m |
| Cable length — unshielded, max. | 300 m |
Interrupts/diagnostics/status information
| Alarms — Diagnostic alarm | Yes |
| Diagnostics indication LED — for status of the inputs | Yes |
Potential separation
| Potential separation digital inputs — between the channels, in groups of | 2 |
Degree and class of protection
| IP degree of protection | IP20 |
Standards, approvals, certificates
| CE mark | Yes |
| CSA approval | Yes |
| UL approval | Yes |
| cULus | Yes |
| FM approval | Yes |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Marine approval | Yes |
| Ecological footprint — environmental product declaration | Yes |
| Ecological footprint — Global warming potential — global warming potential, (total) [CO2 eq] | 123 kg |
| Ecological footprint — Global warming potential — global warming potential, (during production) [CO2 eq] | 12.1 kg |
| Ecological footprint — Global warming potential — global warming potential, (during operation) [CO2 eq] | 111 kg |
| Ecological footprint — Global warming potential — global warming potential, (after end of life cycle) [CO2 eq] | -0.434 kg |
Ambient conditions
| Free fall — Fall height, max. | 0.3 m; five times, in product package |
| Ambient temperature during operation — min. | -20 °C |
| Ambient temperature during operation — max. | 60 °C |
| Ambient temperature during operation — horizontal installation, min. | -20 °C |
| Ambient temperature during operation — horizontal installation, max. | 60 °C |
| Ambient temperature during operation — vertical installation, min. | -20 °C |
| Ambient temperature during operation — vertical installation, max. | 50 °C |
| Ambient temperature during operation — permissible temperature change | 5°C to 55°C, 3°C / minute |
| Ambient temperature during storage/transportation — min. | -40 °C |
| Ambient temperature during storage/transportation — max. | 70 °C |
| Air pressure acc. to IEC 60068-2-13 — Storage/transport, min. | 660 hPa |
| Air pressure acc. to IEC 60068-2-13 — Storage/transport, max. | 1 080 hPa |
| Relative humidity — Operation at 25 ℃ without condensation, max. | 95 % |
Connection method
| required front connector | Yes |
Mechanics/material
| Enclosure material (front) — Plastic | Yes |
Dimensions
| Width | 45 mm |
| Height | 100 mm |
| Depth | 75 mm |
Weights
| Weight, approx. | 170 g |
Downloads & documentation
Official documents from Siemens, downloaded directly from the manufacturer.
Data sheets & manuals
6ES7221-1BF32-0XB0: frequently asked questions
When can 6ES7221-1BF32-0XB0 be shipped?
6ES7221-1BF32-0XB0 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up 6ES7221-1BF32-0XB0 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for 6ES7221-1BF32-0XB0 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 6ES7221-1BF32-0XB0, subject to availability and destination.
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