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S7-1200 and solenoid valves

Blog entry posted in 'S7-1200 outputs', Dec 8, 2016.


I need to drive some solenoid valves (220 V, 50HZ) by a Siemens S7-1200 AC/DC/Rly.
Those solenoids will be activated for a time range between 0.5 and 2 seconds, one by one. The DO will be powered by 220V.
I'm wondering if i could connect the solenoids directly to the DO of the PLC (through a protection fuse), or if I have to use a suppressor circuit in between...

Thanks for your help!!