| | SIMATIC S7, DIGITAL INPUT SM 321, OPTICALLY ISOLATED, 4 DI, 24V DC, NAMUR/DIN 19234, F. SIGNALS F HAZARDOUS AREAS, CAPABLE OF DIAGNOST.,PTB-TESTED |
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| Supply voltage |
| Load voltage L+ |
| Rated value (DC) | 24 V |
| Электропитание / [nicht versorgt - Eingang] / [nicht versorgt - Eingansstrom] |
| Потребление тока / [nicht versorgt - aus Lastspannung L+ (ohne Last), max.] | 50 mA |
| Потребление тока / [nicht versorgt - aus Rückwandbus DC 5 V,] | 80 mA |
| Power losses |
| Power loss, typ. | 1,1 W |
| Digital inputs |
| Number of NAMUR inputs | 4 |
| Input voltage |
| Входное напряжение / на цифровом выходе / при DC / расчетное значение | 8,2 V |
| Input current |
| on wire break, max. | 0,1 mA |
| on short -circuit, max. | 8,5 mA |
| Input delay (for rated value of input voltage) |
| Input frequency (with a time delay of 0.1 ms), max. | 2 kHz |
| for NAMUR inputs |
| Parameterizable | Да |
| Cable length |
| Cable length unshielded, max. | 200 m |
| Encoder |
| Connectable encoders |
| NAMUR encoder | Да |
| Interrupts/diagnostics/status information |
| Diagnostic messages |
| Diagnostic information readable | Да |
| Diagnostics indication LED |
| Исполнение индикации / [nicht versorgt - für Diagnosefunktion: Kurzschluß je Kanal] / [nicht versorgt - LED rot] | Да |
| Исполнение индикации / [nicht versorgt - für Diagnosefunktion: Kurzschluß Sammelfehler] / [nicht versorgt - LED rot] | Да |
| Ex(i) characteristics |
| Module for Ex(i) protection | Да |
| Max. values of input circuits (per channel) |
| Co (permissible external capacity), max. | 3 µF |
| Io (short-circuit current), max. | 14,1 mA |
| Lo (permissible external inductivity), max. | 100 mH |
| Po (power of load), max. | 33,7 mW |
| Uo (output no-load voltage), max. | 10 V |
| Galvanic isolation |
| Galvanic isolation digital inputs |
| Galvanic isolation digital inputs | Да |
| between the channels, in groups of | 1 |
| Условия окружающей среды |
| Operating temperature |
| Температура окружающей среды / во время эксплуатации / максимальная | 60 °C |
| Weight |
| Weight, approx. | 230 g |
| Status | 27.02.2012 |
