Key Features
- 8 digital inputs: Digital input module with 8 DI.
- 24 V DC input rating: Product type designation: SM 1221, DI 8×24 V DC.
- Conformal coating: SIPLUS variant with conformal coating for industrial process technology use.
- Wide operating temperature range: Operating temperature: -40…+70 °C, with start up -25 °C.
- Required front connector: Connection method: required front connector.
Technical Summary
| Product type designation | SM 1221, DI 8×24 V DC |
|---|---|
| Based on | 6ES7221-1BF32-0XB0 |
| Number of digital inputs | 8 |
| Input voltage, rated value (DC) | 24 V |
| 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 |
| Conformal coating | Yes; Class 2 for high reliability |
| IP degree of protection | IP20 |
Applications
- 8-channel digital input acquisition: For reading 8 digital input signals at 24 V DC.
- Interrupt input monitoring: For interrupt inputs with diagnostics and diagnostic alarm support.
Frequently Asked Questions
What is Siemens 6AG1221-1BF32-2XB0?
It is a SIPLUS S7-1200 SM 1221 digital input module.
How many digital inputs does 6AG1221-1BF32-2XB0 provide?
It provides 8 digital inputs.
What is the input rating for this SM 1221 module?
The product type designation is SM 1221, DI 8×24 V DC, and the rated input voltage is 24 V DC.
What is the operating temperature range of 6AG1221-1BF32-2XB0?
The operating temperature range is -40…+70 °C, with start up at -25 °C.
What connection method is required for this module?
A required front connector is needed.
