Technical Summary
| Product type designation | SM 1221, DI 16×24 V DC |
|---|---|
| Based on | 6ES7221-1BH32-0XB0 |
| Rated value (DC) | 24 V |
| Permissible range, lower limit (DC) | 20.4 V |
| Permissible range, upper limit (DC) | 28.8 V |
| Number of digital inputs | 16 |
| 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 |
| Power loss, typ. | 2.5 W |
| IP degree of protection | IP20 |
| Ambient temperature during operation | -20 °C; = Tmin (incl. condensation/frost); start-up @ 0 °C |
Applications
For connecting 16 digital input signals on a 24 V DC system.
For parameterizable interrupt inputs with diagnostic alarm and input status indication.
Key Features
SIPLUS S7-1200 SM 1221 16DI, based on 6ES7221-1BH32-0XB0.
16 DI, 24 V DC, sink/source.
Conformal coating for use in extreme conditions.
-20…+60 °C.
Active Product.
Width 45 mm, height 100 mm, depth 75 mm, weight, approx. 210 g.
Frequently Asked Questions
What is Siemens 6AG1221-1BH32-4XB0?
It is a SIPLUS S7-1200 SM 1221 16DI digital input module based on 6ES7221-1BH32-0XB0.
How many digital inputs does 6AG1221-1BH32-4XB0 have?
It has 16 digital inputs.
What is the rated voltage for this module?
The rated value is 24 V DC, with a permissible range of 20.4 V to 28.8 V.
What are the operating temperature limits for 6AG1221-1BH32-4XB0?
The operating range is -20…+60 °C.
Does this SIPLUS module have conformal coating and active lifecycle status?
Yes. It has conformal coating and the product lifecycle is Active Product.
