Модуль ввода Siemens SIMATIC 6ES7321-7RD00-0AB0
34 525 р.
SIMATIC S7, digital input SM 321, isolated, 4 DI; 24 V DC,NAMUR/DIN 19234, for signals from the hazardous area,diagnostics-capable, PTB tested
| Supply voltage | |
| Rated value (DC) | 24 V |
| Reverse polarity protection | Yes |
| Input current | |
| from load voltage L+ (without load), max | 50 mA |
| from backplane bus 5 V DC, max | 80 mA |
| Encoder supply | |
| Type of output voltage | via the inputs |
| Power loss | |
| Power loss, typ. | 1.1 W |
| Digital inputs | |
| Number of NAMUR inputs | 4 |
| Input voltage | |
| Rated value (DC) | 8.2 V; from internal power circuit supply |
| Input current | |
| on wire-break, max | 0.1 mA |
| on short-circuit, max | 8.5 mA |
| for NAMUR encoders | |
| for signal "0" | 0.35 to 1.2 mA |
| for signal "1" | 2.1 to 7 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 | Yes; 0.1 / 0.5 / 3 / 15 / 20 ms (plus 0.25 ms preparation time) |
| Cable length | |
| unshielded, max. | 200 m |
| Encoder | |
| Connectable encoders | |
| NAMUR encoder | Yes; Two-wire connection |
| Interrupts/diagnostics/status information | |
| Diagnostics function | Yes |
| Diagnostic messages | |
| Diagnostic information readable | Yes |
| Diagnostics indication LED | |
| Group error SF (red) | Yes |
| Status indicator digital input (green) | Yes |
| Channel fault indicator F (red) | Yes |
| Ex(i) characteristics | |
| Module for Ex(i) protection | Yes |
| Maximum 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 |
| Potential separation | |
| Potential separation digital inputs | |
| Potential separation digital inputs | Yes |
| between the channels, in groups of | 1 |
| Ambient temperature during operation max | 60 °C |