Erik, I'm glad you gave a translation otherwise I would have had no idea. My alternative languages are Cockney,Strine and Ebonics.

I've had my fair share of battling transients lately - I've redesigned a controller to replace a PLC and a handful of relays and due to the method I use to test the operation of the system, my 0V is common to my logic, relay drive and the motor (24VDC rectified but not filtered) supplies. Previously the motor drive was isolated from the PLC supply. I found I was getting quite a spike when the motors stopped both from the motor and the transformer that didn't upset my micro but did upset the opto-isolated RS485/USB converter box. After doing some measurements, I was getting some good spikes that must've got through the optos and upset the usb/serial chip. Solution was some MOVs on the transformer secondary and straight across the motors. Just goes to show optos aren't quite the magic bullet you hope they are.


My saying of the day:
'couldn't drive screws into a wooden doll's arse' - used to describe someone who is useless.