6ES7421-1BL01-0AA0 SM421, 32DI, DC24V
SIMATIC S7-400, SM 421 DIGITAL INPUT MODULE, OPTIC. ISOLATED, 32 DI, 24V DC
| Input current |
| from backplane bus 5 V DC, max. |
20 mA |
| Power loss |
| Power loss, typ. |
6 W |
| Digital inputs |
| Number of digital inputs |
32 |
| Number of simultaneously controllable inputs |
| ● Number of simultaneously controllable inputs |
32 |
| Input voltage |
| ● Type of input voltage |
DC |
| ● Rated value (DC) |
24 V |
| ● for signal "0" |
-30 V DC to +5 V DC |
| ● for signal "1" |
13 V DC to 30 V DC |
| Input current |
| ● for signal "0", max. (permissible quiescent current) |
1.3 mA |
| ● for signal "1", typ. |
7 mA |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| — at "0" to "1", min. |
1.2 ms |
| — at "0" to "1", max. |
4.8 ms |
| Cable length |
| ● shielded, max. |
1 000 m |
| ● unshielded, max. |
600 m |
| Encoder |
| Connectable encoders |
| ● 2-wire sensor |
Yes |
| — permissible quiescent current (2-wire sensor), max. |
1.5 mA |
| Potential separation |
| Potential separation digital inputs |
| ● between the channels, in groups of |
32 |
| ● between the channels and backplane bus |
Yes |
| Isolation |
| Isolation tested with |
500 V DC |
| Dimensions |
| Width |
25 mm |
| Height |
290 mm |
| Depth |
210 mm |
| Weights |
| Weight, approx. |
500 g |
