| SIMATIC S7-1200, Digital output SM 1222, 16 DO, 24 V DC, transistor 0.5 A |
| Supply voltage |
| 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. | 140 mA |
| Power loss |
| Power loss, typ. | 2.5 W |
| Digital outputs |
| Number of digital outputs | 16 |
| in groups of | 1 |
| Short-circuit protection | No; to be provided externally |
| Limitation of inductive shutdown voltage to | typ. (L+) -48 V |
| Switching capacity of the outputs |
| with resistive load, max. | 0.5 A |
| on lamp load, max. | 5 W |
| Output voltage |
| Rated value (DC) | 24 V |
| for signal "0", max. | 0.1 V; with 10 kOhm load |
| for signal "1", min. | 20 V DC |
| Output current |
| for signal "1" rated value | 0.5 A |
| for signal "0" residual current, max. | 10 µA |
| Output delay with resistive load |
| "0" to "1", max. | 50 µs |
| "1" to "0", max. | 200 µs |
| Total current of the outputs (per group) |
| horizontal installation |
| — up to 50 °C, max. | 8 A; Current per mass |
| Relay outputs |
| Switching capacity of contacts |
| — with inductive load, max. | 0.5 A |
| — on lamp load, max. | 5 W |
| — with resistive load, max. | 0.5 A |
| Cable length |
| shielded, max. | 500 m |
| unshielded, max. | 150 m |
| Interrupts/diagnostics/status information |
| Alarms |
| Diagnostic alarm | Yes |
| Diagnostics indication LED |
| for status of the outputs | Yes |
| Potential separation |
| Potential separation digital outputs |
| between the channels, in groups of | 1 |
| between the channels and backplane bus | 500 V AC |
| Degree and class of protection |
| Degree of protection acc. to EN 60529 | |
| IP20 | Yes |
| Standards, approvals, certificates |
| CE mark | Yes |
| CSA approval | Yes |
| UL approval | Yes |
| cULus | Yes |
| FM approval | Yes |
| RCM (formerly C-TICK) | Yes |
| Marine approval | Yes |
| Ambient conditions |
| Free fall |
| Fall height, max. | 0.3 m; five times, in product package |
| Ambient temperature during operation |
| min. | -20 °C |
| max. | 60 °C |
| horizontal installation, min. | -20 °C |
| horizontal installation, max. | 60 °C |
| vertical installation, min. | -20 °C |
| vertical installation, max. | 50 °C |
| permissible temperature change | 5°C to 55°C, 3°C / minute |
| Ambient temperature during storage/transportation |
| min. | -40 °C |
| max. | 70 °C |
| Air pressure acc. to IEC 60068-2-13 |
| Storage/transport, min. | 660 hPa |
| Storage/transport, max. | 1 080 hPa |
| Relative humidity |
| Operation at 25 ℃ without condensation, max. | 95 % |
| Connection method |
| required front connector | Yes |
| Mechanics/material |
| Enclosure material (front) | |
| Plastic | Yes |
| Dimensions |
| Width | 45 mm |
| Height | 100 mm |
| Depth | 75 mm |
| Weights |
| Weight, approx. | 220 g |
| last modified: | 03/13/2019 |
