Hello,

I got two solenoid valve in 24VDC but i only have one wire for the 0V 

Wire 1 : solenoid A

Wire 2 : solenoid B

Wire 3 : common ( - ) 

Can i put the common wire on the M (DO0 & DO1) like in the attachment ? 

Thank you 

Hi Steph,

Good Practice suggests : Never!

Site Practice suggests: Use separate 1A MCB to use the common (M-) bus. But one risk stays that if an unknown spike or GND problem occur then might both the channels might get damaged. It's better you use standard practice.

Regards

OmKris

 Hi

StephDORS

Hello,

I got two solenoid valve in 24VDC but i only have one wire for the 0V 

Wire 1 : solenoid A

Wire 2 : solenoid B

Wire 3 : common ( - ) 

Can i put the common wire on the M (DO0 & DO1) like in the attachment ? 

Thank you 

 I prefer to control solenoid valves,using 4 F-DO module in conjuction with safety relays or 1 F-RO modules.

It is more convenient to deal with common wire signal when you have volt free contacts.(also isolate load from DO module).

Then you must watch out for the availability and reliability of the loop to meet your SIF requirements.

As dear OMKRIS2017 said using external fuses for load circuits is necessary to protect relay contacts.

Hope this helps