| SIMATIC S7-300, DIGITAL OUTPUT SM 322, OPTICALLY ISOLATED 16DO, RELAY CONTACTS, 1 X 20 PIN |
| Supply voltage |
| Load voltage L+ |
| Rated value (DC) | 120 V |
| Load voltage L1 |
| Rated value (AC) | 230 V |
| Input current |
| from backplane bus 5 V DC, max. | 100 mA |
| Power losses |
| Power loss, typ. | 4.5 W |
| Digital outputs |
| Number/binary outputs | 16; Relay |
| Lamp load, max. | 50 W; 230 V AC |
| Output current |
| for signal "1" rated value | 2 A |
| for signal "1" minimum load current | 10 mA |
| Switching frequency |
| with resistive load, max. | 1 Hz |
| with inductive load, max. | 0.5 Hz |
| on lamp load, max. | 1 Hz |
| mechanical, max. | 10 Hz |
| Aggregate current of outputs (per group) |
| horizontal installation |
| up to 60 °C, max. | 8 A |
| vertical installation |
| up to 40 °C, max. | 8 A |
| Relay outputs |
| Rated input voltage of relay L+ (DC) | 24 V |
| Number of operating cycles | 100000; 50000 (24 V DC, at 2 A); 700000 (120 V AC, at 2 A); 100000 (230 V AC, at 2 A) |
| Switching capacity of contacts |
| with inductive load, max. | 2 A; 2 A (230 V AC), 2 A (24 V DC) |
| Switching frequency/contacts/at ohmic load/maximum | 2 A; 2 A (230 V AC), 2 A (24 V DC) |
| Cable length |
| Cable length, shielded, max. | 1000 m |
| Cable length unshielded, max. | 600 m |
| Interrupts/diagnostics/status information |
| Alarms |
| Diagnostic alarm | No |
| Diagnoses |
| Diagnostics | No |
| Wire break | No |
| Short circuit | No |
| Fuse blown | No |
| Missing load voltage | No |
| Diagnostics indication LED |
| Rated load voltage PWR (green) | No |
| Fuse OK FSG (green) | No |
| Galvanic isolation |
| Galvanic isolation digital outputs |
| between the channels, in groups of | 8 |
| between the channels and the backplane bus | Yes; Optocoupler |
| Isolation |
| Isolation checked with | 1500 V AC |
| Connection method |
| required front connector | 20-pin |
| Dimensions |
| Width | 40 mm |
| Height | 125 mm |
| Depth | 120 mm |
| Weight |
| Weight, approx. | 250 g |
