Technical Summary
| Product type designation | SM 1221, DI 8×24 V DC |
|---|---|
| Based on | 6ES7221-1BF32-0XB0 |
| Number of digital inputs | 8 |
| Supply voltage, rated value (DC) | 24 V |
| Supply voltage, permissible range, lower limit (DC) | 20.4 V |
| Supply voltage, permissible range, upper limit (DC) | 28.8 V |
| Input current from backplane bus 5 V DC, max. | 105 mA |
| Power loss, typ. | 1.5 W |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
| Input voltage for signal "0" | 5 V DC at 1 mA |
| Input voltage for signal "1" | 15 V DC at 2.5 mA |
| Ambient temperature during operation | -40 °C; = Tmin (incl. condensation/frost); start-up @ -25 °C |
Key Features
8 digital inputs
Digital input module with 8 DI at 24 V DC.
Digital input module with 8 DI at 24 V DC.
Sink/source input behavior
Digital inputs with sink/source.
Digital inputs with sink/source.
Conformal coating
Conformal coating for the printed circuit board assemblies.
Conformal coating for the printed circuit board assemblies.
Extended temperature range
Operating temperature: -40…+70 °C, with start up -25 °C.
Operating temperature: -40…+70 °C, with start up -25 °C.
Based on 6ES7221-1BF32-0XB0
Variant based on 6ES7221-1BF32-0XB0.
Variant based on 6ES7221-1BF32-0XB0.
Applications
24 V DC digital signal acquisition
Collects 24 V DC digital input signals through 8 DI.
Collects 24 V DC digital input signals through 8 DI.
Interrupt input monitoring
Supports interrupt inputs with parameterization, diagnostics, diagnostic alarm, and input status indication.
Supports interrupt inputs with parameterization, diagnostics, diagnostic alarm, and input status indication.
Frequently Asked Questions
What is the exact model of Siemens 6AG1221-1BF32-2XB0?
It is a SIPLUS S7-1200 SM 1221 digital input module, type SM 1221, DI 8×24 V DC.
How many digital inputs does 6AG1221-1BF32-2XB0 have?
It has 8 digital inputs.
What is the rated supply voltage for 6AG1221-1BF32-2XB0?
The rated supply voltage is 24 V DC, with a permissible range of 20.4 V DC to 28.8 V DC.
What temperature range does 6AG1221-1BF32-2XB0 support?
Operating temperature is -40…+70 °C, and start up is -25 °C.
