Product Description
Key Features
- Product type: SM 1221, DI 8×24 V DC digital input module.
- Digital inputs: 8 digital inputs, arranged in groups of 2, with sink/source operation.
- Supply voltage: Rated supply voltage: 24 V DC; permissible range: 20.4 V to 28.8 V.
- Environmental design: Conformal coating; ambient temperature during operation: -25 °C to 60 °C, with +70 °C for 10 min (OT1, ST1/ST2 according to EN 50155).
- Installation and connection: Rail-based design with a required front connector; dimensions: 45 mm width, 100 mm height, 75 mm depth.
- Protection and lifecycle: IP20 degree of protection and Active Product lifecycle.
Technical Summary
| Order number | 6AG2221-1BF32-1XB0 |
|---|---|
| Product type | SM 1221, DI 8×24 V DC |
| Digital inputs | 8; in groups of 2 |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Input voltage for signal "0" | 5 V DC at 1 mA |
| Input voltage for signal "1" | 15 V DC at 2.5 mA |
| Installation | Rail-based; required front connector |
| Protection | IP20 |
| Operating ambient temperature | -25 °C to 60 °C; +70 °C for 10 min (OT1, ST1/ST2 according to EN 50155) |
| Lifecycle | Active Product |
Frequently Asked Questions
What exact Siemens order number should be verified?
Verify order number 6AG2221-1BF32-1XB0 and product type SM 1221, DI 8×24 V DC.
How many digital inputs does this module have?
It has 8 digital inputs arranged in groups of 2.
What supply voltage does the module use?
The rated supply voltage is 24 V DC, with a permissible range from 20.4 V to 28.8 V DC.
What installation connection should be confirmed?
Confirm the rail-based installation and the required front connector.
