| Article number |
6ES7321-1FF01-0AA0
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|
|
SIMATIC S7-300, Digital input SM 321, isolated, 8 DI, 120 V/230 V AC, 1x 20-pole |
| Supply voltage |
| Load voltage L1 |
| ● Rated value (AC) |
230 V; 120/230 V AC |
| Input current |
| from backplane bus 5 V DC, max. |
29 mA |
| Power loss |
| Power loss, typ. |
4.9 W |
| Digital inputs |
| Number of digital inputs |
8 |
| Input characteristic curve in accordance with IEC 61131, type 1 |
Yes |
| Number of simultaneously controllable inputs |
| horizontal installation |
| — up to 60 °C, max. |
8 |
| vertical installation |
| — up to 40 °C, max. |
8 |
| Input voltage |
| ● Type of input voltage |
AC |
| ● Rated value (AC) |
230 V; 120/230 V AC (47 ... 63 Hz) |
| ● for signal "0" |
0 to 40V |
| ● for signal "1" |
79 to 264V |
| Input current |
| ● for signal "1", typ. |
6.5 mA; (120 V); 11 mA (230 V) |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| — parameterizable |
No |
| — at "0" to "1", max. |
25 ms |
| — at "1" to "0", max. |
25 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. |
2 mA |
| Interrupts/diagnostics/status information |
| Alarms |
No |
| Diagnostics function |
No |
| Alarms |
| ● Diagnostic alarm |
No |
| ● Hardware interrupt |
No |
| Diagnostics indication LED |
| ● Group error SF (red) |
No |
| ● Status indicator digital input (green) |
Yes |
| Potential separation |
| Potential separation digital inputs |
| ● between the channels |
No |
| ● between the channels, in groups of |
2 |
| ● between the channels and backplane bus |
Yes; Optocoupler |
| Isolation |
| Isolation tested with |
4 000 V DC |
| connection method |
| required front connector |
20-pin |
| Dimensions |
| Width |
40 mm |
| Height |
125 mm |
| Depth |
120 mm |
| Weights |
| Weight, approx. |
240 g |