| SIPLUS S7-300 SM321 - 40-POLE -40 ... +70°C with conformal coating conformity TO EN50155 T1 CAT 1 CL A/B based on 6ES7321-1BL00-0AA0. DIGITAL INPUT OPTICALLY ISOLATE 32DI, 24 V DC, 1 X 40 PIN |
| Supply voltage |
| Load voltage L+ |
| Rated value (DC) | 24 V |
| permissible range, lower limit (DC) | 20.4 V |
| permissible range, upper limit (DC) | 28.8 V |
| Input current |
| from backplane bus 5 V DC, max. | 15 mA |
| Power loss |
| Power loss, typ. | 6.5 W |
| Digital inputs |
| Number of digital inputs | 32 |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
| Number of simultaneously controllable inputs |
| horizontal installation |
| — up to 40 °C, max. | 32 |
| — up to 60 °C, max. | 16; 12 @ > 60 °C |
| Input voltage |
| Type of input voltage | DC |
| Rated value (DC) | 24 V |
| for signal "0" | -30 to +5V |
| for signal "1" | 13 to 30V |
| Input current |
| for signal "1", typ. | 7 mA |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| — parameterizable | No |
| — at "0" to "1", min. | 1.2 ms |
| — at "0" to "1", max. | 4.8 ms |
| — at "1" to "0", min. | 1.2 ms |
| — at "1" to "0", max. | 4.8 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. | 1.5 mA |
| Isochronous mode |
| Isochronous operation (application synchronized up to terminal) | No |
| Interrupts/diagnostics/status information |
| Diagnostics function | No |
| Alarms |
| Diagnostic alarm | No |
| Hardware interrupt | No |
| Diagnostics indication LED |
| Status indicator digital input (green) | Yes |
| Potential separation |
| Potential separation digital inputs |
| between the channels | No |
| between the channels, in groups of | 16 |
| between the channels and backplane bus | Yes; Optocoupler |
| Permissible potential difference |
| between different circuits | 75 V DC/60 V AC |
| Isolation |
| Isolation tested with | 500 V DC |
| Standards, approvals, certificates |
| CE mark | Yes |
| UL approval | Yes; File E239877 |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| EAC (formerly Gost-R) | Yes |
| Use in hazardous areas |
| ATEX | Yes |
| Railway application |
| EN 50155 | Yes; Sections 4, 5 and 12; no further agreements apply; T1, Category 1, Class A/B, EN 50155:2007 |
| Ambient conditions |
| Ambient temperature during operation |
| min. | -40 °C; = Tmin |
| max. | 70 °C; = Tmax; for use on railway vehicles according to EN50155, the rated temperature range -25 ... +55 °C (T1) or 60 °C @ UL/ULhaz/ATEX/FM use applies |
| Ambient temperature during storage/transportation |
| min. | -40 °C |
| max. | 70 °C |
| Altitude during operation relating to sea level |
| Installation altitude above sea level, max. | 5 000 m |
| Ambient air temperature-barometric pressure-altitude | Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax -20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m) |
| Relative humidity |
| With condensation, tested in accordance with IEC 60068-2-38, max. | 100 %; RH incl. condensation/frost (no commissioning under condensation conditions) |
| Resistance |
| Use in stationary industrial systems |
| — to biologically active substances according to EN 60721-3-3 | Yes; Class 3B2 mold, fungus and dry rot spores (with the exception of fauna); Class 3B3 on request |
| — to chemically active substances according to EN 60721-3-3 | Yes; Class 3C4 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); * |
| — to mechanically active substances according to EN 60721-3-3 | Yes; Class 3S4 incl. sand, dust, * |
| Use on land craft, rail vehicles and special-purpose vehicles |
| — to biologically active substances according to EN 60721-3-5 | Yes; Class 5B2 mold, fungus and dry rot spores (with the exception of fauna); Class 5B3 on request |
| — to chemically active substances according to EN 60721-3-5 | Yes; Class 5C3 (RH < 75 %) incl. salt spray acc. to EN 50155 (ST2); * |
| — to mechanically active substances according to EN 60721-3-5 | Yes; Class 5S3 incl. sand, dust; * |
| Use on ships/at sea |
| — to biologically active substances according to EN 60721-3-6 | Yes; Class 6B2 mold and fungal spores (excluding fauna); Class 6B3 on request |
| — to chemically active substances according to EN 60721-3-6 | Yes; Class 6C3 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); * |
| — to mechanically active substances according to EN 60721-3-6 | Yes; Class 6S3 incl. sand, dust; * |
| Remark |
| — Note regarding classification of environmental conditions acc. to EN 60721 | * The supplied plug covers must remain in place over the unused interfaces during operation! |
| Connection method |
| required front connector | 40-pin |
| Dimensions |
| Width | 40 mm |
| Height | 125 mm |
| Depth | 120 mm |
| Weights |
| Weight, approx. | 260 g |
| last modified: | 03/28/2019 |
