8 AC outputs at 0.5 A — what that means for your BOM
The 6ES7222-1EF22-0XA0 is the S7-200 EM 222 expansion module with 8 digital outputs rated 0.5 A each at 220/230 V AC. Each channel switches resistive, inductive, or lamp loads up to that current, with a 60 W lamp load ceiling per output. The 0.5 A per-channel limit holds across the full 0 to 55 °C operating range — no derating to track. The outputs are isolated in groups of 1 — each channel is its own group — via optocoupler, so a short on one output won't pull down the others. That matters when you're driving solenoids or contactors on separate phases and need fault containment.
AC load switching — voltage range and frequency limits
The module accepts 65 to 264 V AC at 47 to 63 Hz, covering 120 V and 230 V line supplies globally. The minimum load current to guarantee a clean '1' signal is 50 mA; below that the output may not switch reliably. Residual leakage at '0' state is up to 1.8 mA at 264 V AC — enough to ghost a small LED indicator if you don't add a bleeder resistor. Inductive loads need an external snubber or flyback diode — the module has no internal suppression and the manual explicitly calls for external shutdown-voltage limiting. Factor that into your panel layout; it's not a fit-and-forget detail on valve or relay coils.