| SIMATIC S7, digital output SM 322, isolated, 4 DO, 15 V / 20 mA 1 x 20-pole, for signals from the hazardous area, diagnostics-capable, PTB tested |
| Supply voltage |
| Load voltage L+ |
| Rated value (DC) | 24 V |
| Reverse polarity protection | Yes |
| Input current |
| from load voltage L+ (without load), max. | 160 mA |
| from backplane bus 5 V DC, max. | 85 mA |
| Power loss |
| Power loss, typ. | 3 W |
| Digital outputs |
| Number of digital outputs | 4 |
| Short-circuit protection | Yes; Electronic |
| Response threshold, typ. | Output current with short-circuit protection, min. 20.5 mA + 10 % |
| Load resistance range |
| upper limit | 200 Ω; Two-wire connection |
| Output voltage |
| Rated value (DC) | 15 V |
| Output current |
| for signal "1" permissible range for 0 to 60 °C, max. | 20 mA; ±10 % |
| Switching frequency |
| with resistive load, max. | 100 Hz |
| Cable length |
| unshielded, max. | 200 m |
| Interrupts/diagnostics/status information |
| Diagnostics function | Yes |
| Diagnostic messages |
| Diagnostic information readable | Yes |
| Short-circuit | Yes |
| Diagnostics indication LED |
| Group error SF (red) | Yes |
| Status indicator digital output (green) | Yes |
| Channel fault indicator F (red) | Yes |
| Ex(i) characteristics |
| Module for Ex(i) protection | Yes |
| Maximum values of output circuits (per channel) |
| Co (permissible external capacity), max. | 500 nF |
| Io (short-circuit current), max. | 85 mA |
| Lo (permissible external inductivity), max. | 5 mH |
| Po (power of load), max. | 335 mW |
| Uo (output no-load voltage), max. | 15.75 V |
| Potential separation |
| Potential separation digital outputs |
| Potential separation digital outputs | Yes |
| between the channels, in groups of | 1 |
| Standards, approvals, certificates |
| Use in hazardous areas |
| Type of protection acc. to EN 50020 (CENELEC) | [EEx ib] IIC |
| Type of protection acc. to FM | AIS CL.1, DIV 1, GP A, B, C, D; CL.I, DIV 2, GP A, B, C, D T4 |
| Test number PTB | Ex-96.D.2102X |
| Ambient conditions |
| Ambient temperature during operation |
| max. | 60 °C |
| Connection method |
| required front connector | 20-pin |
| Weights |
| Weight, approx. | 230 g |
| last modified: | 03/13/2019 |
