6ES7421-1FH20-0AA0 SIMATIC S7-400, DIG.INPUT MOD.
SIMATIC S7-400, DIG.INPUT MOD. SM 421, OPTIC. ISOLATED, 16 DI, 120/230V UC INPUTS PER IEC1131-2 TYPE 2
| Input current |
| from backplane bus 5 V DC, max. |
80 mA |
| Power loss |
| Power loss, typ. |
12 W |
| Digital inputs |
| Number of digital inputs |
16 |
| Number of simultaneously controllable inputs |
| ● Number of simultaneously controllable inputs |
16 |
| Input voltage |
| ● Type of input voltage |
AC/DC |
| ● Rated value (UC) |
230 V; 120/230 V UC |
| ● for signal "0" |
0 to 40 V AC/ -40 to +40 V DC |
| ● for signal "1" |
74 to 264 V AC; 80 to 264 V DC, -80 to -264 V |
| ● Frequency range |
47 ... 63 Hz |
| Input current |
| ● for signal "0", max. (permissible quiescent current) |
6 mA; AC: 6 mA; DC: 2 mA |
| ● for signal "1", typ. |
10 mA; at 120 V: 10 mA AC, 1.8 mA DC; at 230 V: 14 mA AC, 2 mA DC |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| — at "0" to "1", max. |
20 ms; AC: 20 ms; DC: 15 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. |
5 mA; AC: 5 mA |
| Potential separation |
| Potential separation digital inputs |
| ● between the channels, in groups of |
4 |
| ● between the channels and backplane bus |
Yes |
| Isolation |
| Isolation tested with |
1500 V AC |
| Dimensions |
| Width |
25 mm |
| Height |
290 mm |
| Depth |
210 mm |
| Weights |
| Weight, approx. |
650 g |
