Hi 123MB, I just want to say that in our company, in the recent years we always add supression diodes on solenoids. In our system this has nothing to do with the plc output itself, as output is switching a small relay, which then swith on the coils.
Some examples of problems we have had, before...
A load breaker is just a switch, for example 3 or 4 poles, for turning on and off electrical loads. There is no protection against overcurrent in this device. cool:)
I am working in an installation company, recently we used an old cable in a new innstallation. Before installing the cable we measured with an insulation tester that it was OK. Now, when the ship is on commissioning there is an earth fault in this cable due to its age i guess.. Next time we are...
