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SIMATIC S7/PCS 7, SM 321 DIGITAL INPUT, 16 DI, DC 24/125V, 1 X 40-PIN FRONT CONNECTOR WITH WIRE BREAK DIAGNOSIS HARDWARE INTERRUPT DIAGNOSTICS |
| Supply voltage |
| Load voltage L+ |
| ● Rated value (DC) |
24 V |
| ● permissible range, lower limit (DC) |
24 V |
| ● permissible range, upper limit (DC) |
125 V |
| Input current |
| from backplane bus 5 V DC, max. |
90 mA |
| Power losses |
| Power loss, typ. |
2 W; V_in = 24 V DC |
| Time stamping |
| Time stamping, supported |
Yes |
| Accuracy |
0.1 ms; Use shielded cables and parameterize an input delay of 0.1 ms. |
| Digital inputs |
| Number of digital inputs |
16 |
| Input characteristic curve in accordance with IEC 61131, type 1 |
Yes |
| Number of simultaneously controllable inputs |
| horizontal installation |
| — up to 60 °C, max. |
16; V_in = 100 V DC |
| vertical installation |
| — up to 40 °C, max. |
16; V_in = 100 V DC |
| Input voltage |
| ● Rated value (DC) |
24 V; 24 V DC to 125 V DC |
| ● for signal "0" |
-146 to 5V |
| ● for signal "1" |
15 to 146V |
| Input current |
| ● for signal "1", typ. |
3.5 mA |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| — Parameterizable |
Yes; 0.1 / 0.5 / 3 / 15 / 20 ms |
| Cable length |
| ● Cable length, shielded, max. |
1 000 m |
| ● Cable length unshielded, max. |
600 m |
| Encoder |
| Connectable encoders |
| ● 2-wire sensor |
Yes |
| — Permissible quiescent current (2-wire sensor), max. |
1 mA |
| Isochronous mode |
| Isochronous operation (application synchronized up to terminal) |
No |
| Interrupts/diagnostics/status information |
| Alarms |
| ● Diagnostic alarm |
Yes; Parameterizable |
| ● Hardware interrupt |
Yes; Parameterizable |
| Diagnostic messages |
| ● Diagnostic functions |
Yes; Parameterizable |
| Diagnostics indication LED |
| ● Group error SF (red) |
Yes |
| ● Status indicator digital input (green) |
Yes |
| Galvanic isolation |
| Galvanic isolation digital inputs |
| ● between the channels |
No |
| ● between the channels, in groups of |
16 |
| ● between the channels and the backplane bus |
Yes; Optocoupler |
| Permissible potential difference |
| between different circuits |
250V AC/300V DC |
| Isolation |
| Isolation checked with |
3500V DC |
| Ambient conditions |
| Operating temperature |
| ● Min. |
0 °C |
| ● max. |
60 °C |
| Connection method |
| required front connector |
1x 40-pin |
| Dimensions |
| Width |
40 mm |
| Height |
125 mm |
| Depth |
120 mm |
| Weights |
| Weight, approx. |
200 g |
| last modified: |
13.10.2014 |
