Product Overview
Technical Summary
| Product type | SM 1221, DI 8×24 V DC |
|---|---|
| Based on | 6ES7221-1BF32-0XB0 |
| Digital inputs | 8 |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Input grouping | In groups of 2 |
| Operating ambient temperature | -20 °C to 60 °C |
| Protection | IP20 |
| Conformal coating | Class 2 for high reliability according to EN 61086 |
| Front connector | Required |
Key Features
- Product designation: SM 1221, DI 8×24 V DC.
- Digital inputs: 8 digital inputs, in groups of 2, with IEC 61131 type 1 input characteristic.
- Supply voltage: Rated supply voltage: 24 V DC; permissible range: 20.4 V to 28.8 V DC.
- Conformal coating: Conformal coating for printed circuit board assemblies according to EN 61086, Class 2 for high reliability.
- Operating temperature: Ambient temperature during operation: -20 °C to 60 °C; cold restart minimum: 0 °C.
- Protection and connection: IP20 degree of protection; required front connector.
Applications
- Stationary industrial systems: Use in stationary industrial systems with stated biological, chemical and mechanically active substance classifications.
- Industrial process technology: Use in industrial process technology against chemically active substances according to EN 60654-4.
- Ships and sea applications: Use on ships or at sea with stated biological, chemical and mechanically active substance classifications.
Frequently Asked Questions
What does Siemens order number 6AG1221-1BF32-4XB0 identify?
It identifies a SIPLUS S7-1200 SM 1221 digital input module with product type designation SM 1221, DI 8×24 V DC.
Which specifications distinguish this listed variant?
It has 8 digital inputs, a rated supply voltage of 24 V DC, conformal coating, IP20 protection and an operating ambient temperature of -20 °C to 60 °C.
What code and nameplate details should be checked?
Check the complete order number 6AG1221-1BF32-4XB0 and the product type designation SM 1221, DI 8×24 V DC.
What information is needed for a quotation?
Provide the required quantity and destination together with the complete order number 6AG1221-1BF32-4XB0.
