Product Description
Key Features
- Product identity: SIPLUS S7-1200 SM 1221, DI 8×24 V DC, based on 6ES7221-1BF32-0XB0.
- Digital inputs: 8 digital inputs, in groups of 2, with sink/source capability and an IEC 61131 type 1 input characteristic curve.
- Supply voltage: Rated value: 24 V DC; permissible range: 20.4 V to 28.8 V.
- Environmental data: Ambient temperature during operation: -40 °C to 70 °C; start-up at -25 °C. At Tmax > +60 °C, 4 inputs may be simultaneously activated for horizontal mounting, with no adjacent points.
- Protection and coating: IP20 degree of protection and conformal coating. The supplied plug covers must remain in place over unused interfaces during operation.
- Installation and dimensions: Required front connector; 45 mm width, 100 mm height and 75 mm depth.
Technical Summary
| Product type | SM 1221, DI 8×24 V DC |
|---|---|
| Based on | 6ES7221-1BF32-0XB0 |
| Product lifecycle | Active Product |
| Digital inputs | 8 |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V |
| Input characteristic | IEC 61131, type 1 |
| IP degree of protection | IP20 |
| Operating temperature | -40 °C to 70 °C; start-up at -25 °C |
| Conformal coating | Yes; Class 2 for high reliability |
Frequently Asked Questions
What exact model and base code should be verified?
Verify 6AG1221-1BF32-2XB0 and its base code 6ES7221-1BF32-0XB0.
How many digital inputs does this module have?
It has 8 digital inputs, in groups of 2.
What supply voltage does the module use?
The rated supply voltage is 24 V DC, with a permissible range of 20.4 V to 28.8 V.
What environmental temperature data should be confirmed?
Operating ambient temperature is -40 °C to 70 °C, with start-up at -25 °C. At Tmax > +60 °C, 4 inputs may be simultaneously activated for horizontal mounting, with no adjacent points.
