6ES7221-1BF32-0XB0 DIGITAL INPUT SM 1221, 8DI, 24V DC
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SIMATIC S7-1200, DIGITAL INPUT SM 1221, 8DI, 24V DC, SINK/SOURCE INPUT
Supply voltage |
Rated value (DC) |
|
● 24 V DC |
Yes |
permissible range, lower limit (DC) |
20.4 V |
permissible range, upper limit (DC) |
28.8 V |
Input current |
from backplane bus 5 V DC, max. |
105 mA |
Digital inputs |
● from load voltage L+ (without load), max. |
4 mA; per channel |
Output voltage |
Power supply to the transmitters |
● present |
Yes |
Power loss |
Power loss, typ. |
1.5 W |
Digital inputs |
Number of digital inputs |
8 |
● in groups of |
2 |
Input characteristic curve in accordance with IEC 61131, type 1 |
Yes |
Number of simultaneously controllable inputs |
all mounting positions |
— up to 40 °C, max. |
8 |
horizontal installation |
— up to 40 °C, max. |
8 |
— up to 50 °C, max. |
8 |
vertical installation |
— up to 40 °C, max. |
8 |