Programmable Logic Controller Guide: Selection, Application, and Maintenance for Engineers
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- Part number
- 6ES7221-3BD30-0XB0
- Model no
- SB 1221, DI 4x24 V DC 200 kHz
In stock · 50+
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· From Türkiye
0
SIMATIC S7-1200Siemens 6ES7221-3BD30-0XB0 SIMATIC S7-1200 SB 1221 4DI 24VDC 200kHz Digital Input Signal Board
SIMATIC S7-1200 SB 1221 signal board, 4 DI, 24V DC sourcing, 200 kHz HSC input.
Description
About the SB 1221, DI 4x24 V DC 200 kHz
About the SB 1221, DI 4x24 V DC 200 kHz
The Siemens 6ES7221-3BD30-0XB0 SIMATIC S7-1200 SB 1221 signal board adds 4 current-sourcing digital inputs at 24 V DC to a compact CPU, with a 200 kHz high-speed counting input option. It draws 40 mA from the backplane bus, dissipates 1 W, and mounts directly onto the CPU front without extra rack space.
Certifications & Standards
- CE
- CSA
- UL
- cULus
- FM
- RCM
- KC
- Marine
Selection Notes
This SB 1221 variant provides 4 current-sourcing inputs at up to 200 kHz; a higher-channel-count sibling in the same signal board family instead offers 8 inputs at 100 kHz. Choose this 4-channel 200 kHz version when the application needs faster edge detection on fewer points, such as a quadrature encoder input, and the 8-channel version when more digital sensing points matter more than raw counting speed. The 50 m shielded cable length limit is notably shorter than the 500 m rating on standard S7-1200 digital input modules, reflecting the higher 200 kHz bandwidth this board is built for.
Applications
Fits high-speed counting tasks directly on an S7-1200 CPU without a rack slot: quadrature encoder feedback, fast proximity sensor pulses, and flow-meter counting up to 200 kHz per channel.
Specification
Full specification
General information 1
| Product type designation | SB 1221, DI 4x24 V DC 200 kHz |
|---|
Input current 1
| from backplane bus 5 V DC, typ. | 40 mA |
|---|
Power loss 1
| Power loss, typ. | 1 W |
|---|
Show all 53 specifications ↓ Show less ↑50 more values in Identification, Digital inputs, Interrupts/diagnostics/status information, Standards, approvals, certificates, Ambient conditions, Mechanics/material, Dimensions, Weights, Logistics.
Identification 10
| Part number | 6ES7221-3BD30-0XB0 |
|---|---|
| Type designation | SB 1221, DI 4x24 V DC 200 kHz |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 6940408100787 |
| ETIM class | EC001419 |
| eCl@ss | 27242204 |
Digital inputs 10
| Number of digital inputs | 4; Current-sourcing |
|---|---|
| in groups of | 4 |
| Input voltage: Rated value (DC) | 24 V |
| Input voltage: for signal "0" | (L+ minus 5.0 V DC) ... L+ (1.4 ... 0 mA) |
| Input voltage: for signal "1" | 0 V ... (L+ minus 10 V DC (10 ... 2.9 mA)) |
| Input current: for signal "0", max. (permissible quiescent current) | 1.4 mA |
| Input current: for signal "1", min. | 2.9 mA |
| Input current: for signal "1", typ. | 7 mA |
| Input delay (for rated value of input voltage) for standard inputs: Parameterizable for interrupt inputs | Yes; 0.1 / 0.2 / 0.4 / 0.8 / 1.6 / 3.2 / 6.4 / 10.0 / 12.8 / 20.0 μs; 0.05 / 0.1 / 0.2 / 0.4 / 0.8 / 1.6 / 3.2 / 6.4 / 10.0 / 12.8 / 20.0 ms |
| Cable length: shielded, max. | 50 m; shielded, twisted pair |
Interrupts/diagnostics/status information 1
| Diagnostics indication LED: for status of the inputs | Yes |
|---|
Standards, approvals, certificates 8
| 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 |
Ambient conditions 10
| 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: vertical installation, min. | -20 °C |
| 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 % |
Mechanics/material 1
| Enclosure material (front): plastic | Yes |
|---|
Dimensions 3
| Width | 38 mm |
|---|---|
| Height | 62 mm |
| Depth | 21 mm |
Weights 1
| Weight, approx. | 35 g |
|---|
Logistics 6
| Net weight | 0.03 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.53 kg |
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7221-3BD30-0XB0
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- CE mark
- CSA approval
- UL approval
- cULus
- FM approval
- RCM (formerly C-TICK)
- KC approval
- Marine approval
Quick answers
Questions about the SB 1221, DI 4x24 V DC 200 kHz
Which supply voltage is SB 1221, DI 4x24 V DC 200 kHz rated for?
The rated operational voltage of SB 1221, DI 4x24 V DC 200 kHz is 24 V AC.
What is the HS code of SB 1221, DI 4x24 V DC 200 kHz for customs?
The tariff (HS) code on file for SB 1221, DI 4x24 V DC 200 kHz is 85389091.
What is the EAN of SB 1221, DI 4x24 V DC 200 kHz?
The EAN (GTIN) of SB 1221, DI 4x24 V DC 200 kHz is 6940408100787.
Where does SB 1221, DI 4x24 V DC 200 kHz ship from, and how fast?
SB 1221, DI 4x24 V DC 200 kHz ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
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Reviews
Customer reviews
Series
Siemens SIMATIC S7-1200
- Brand
- Siemens
- Series
- SIMATIC S7-1200
