ptonsparky
Tom
- Occupation
- EC - retired
We set up a system where 2 small VFDs control separate pumps. P1 only runs with A product.
P2 only runs with B product and neither should run when the other does. A couple years ago we noticed both pumps running. Someone, we thought, had messed with the parameters for the onboard relay which is part or our interlock. We set the parameter again and locked them. Fast forward to yesterday and we have the same problem. Everyone swears, and I believe them, that they didn’t touch. The parameter and only that one had changed,AFAIK. We had to unlock to change it back.
Anyone with a similar problem with that drive? A solution?
P2 only runs with B product and neither should run when the other does. A couple years ago we noticed both pumps running. Someone, we thought, had messed with the parameters for the onboard relay which is part or our interlock. We set the parameter again and locked them. Fast forward to yesterday and we have the same problem. Everyone swears, and I believe them, that they didn’t touch. The parameter and only that one had changed,AFAIK. We had to unlock to change it back.
Anyone with a similar problem with that drive? A solution?