The Bernier Divider was a little more complex only because it has to VFD's in it and the current plc in it was doing just fine, but the VFD's were giving us issues. We wanted to replace the VFD's with a different brand. I presented the options of replacing the VFD's: Ask Bernier to re-program the plc to work the VFDs of our choosing, purchase the programming software for the plc that's currently in the divider, or replace the plc, hmi, and the VFD's of my choosing.
Replacing the plc, hmi, and the VFD's were going to be the best option for us. Only because I wasn't getting any more money for being the resident programmer. We got the parts in for this machine, I spent a good while programming this one to make sure the VFD's were working as they should. The first VFD was the main machine speed and dictated by the HMI. The second VFD speed was a discharge belt and speed was a percentage of the main machine speed with the option to change faster or slower via the hmi.
There was quite a bit of wiring and installation issues, but I got it done in 3 days. I was then on a time clock to debug any issues with this as I had a new job waiting on me. I spent the next two weeks drilling the machine and the operators to make sure they knew the machine and how to operate it. (Even though I kept the look and feel as close to the original as I could.)
I have been back to this plant for various other support reasons and checked in on this machine. All is still doing ok and working as I left it. I did have to replace the hmi due to oil saturation, but it was back in operation with 3 hours.
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