Dear All

We wish to measure the voltage of electrolyser cells. This electrolyser is supplied with 110Vdc and each cell should have about 5V.  I want to connect each cell to different channels of SM331. But I'm worried about the maximun voltage between channels and Mana. I'm planning to use the module 6ES7331-7NF00-0AB0 of 6ES7331-7NF10-OAB0.

Anyone has experience doing this type of connection or can anyone suggest me another solution or module for this application?

Thanks in advance.

hi Eddo,

see the technical data of 6ES7-7NF10:

so when your voltage of all is 110V DC, this is not the right module for it. 

for the 7NF00 it is the same between M and the input. 

Unfortunally I have no idea, how to handle this best.

regards,

Thanks MOP

Your answer confirm what I was thinking.