| Article number |
6ES7221-1BF22-0XA0
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***Spare part*** SIMATIC S7-200, Digital input EM 221, only for S7-22X CPU, 8 DI, 24 V DC, sinking-sourcing |
| Input current |
| from backplane bus 5 V DC, max. |
30 mA |
| Power loss |
| Power loss, typ. |
2 W |
| Digital inputs |
| Number of digital inputs |
8 |
| Source/sink input |
Yes |
| Input voltage |
| ● Type of input voltage |
DC |
| ● Rated value (DC) |
24 V |
| ● for signal "0" |
0 to 5 V |
| ● for signal "1" |
+15 to +30 V |
| Input current |
| ● for signal "1", typ. |
4 mA |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| — at "0" to "1", max. |
4.5 ms |
| Cable length |
| ● shielded, max. |
500 m |
| ● unshielded, max. |
300 m |
| Encoder |
| Connectable encoders |
| ● 2-wire sensor |
Yes |
| — permissible quiescent current (2-wire sensor), max. |
1 mA |
| Potential separation |
| Potential separation digital inputs |
| ● Potential separation digital inputs |
Yes; Optocoupler |
| ● between the channels, in groups of |
4 |
| connection method |
| Plug-in I/O terminals |
Yes |
| Dimensions |
| Width |
46 mm |
| Height |
80 mm |
| Depth |
62 mm |
| Weights |
| Weight, approx. |
150 g |