PLC Pie Guy
Member
I'm sure some of you have seen the video of the ski lift that malfunctioned in Georgia. Its on the CNN site.
Its likely that the investigation will be tight with details but I'm curious if anybody knows what happened there??? Improper wiring or a programming mistake. Why did it go in reverse and at full speed. I would think the drive to have a maximum frequency parameter set and the reverse to be disabled as well.
Surely there was a lack of emergency stopping mechanisms. I don't ski but I can imagine that there are a lot of people examining their ski lifts now for potential bugs like this one.
I hope all were ok, it looked pretty bad in the video!
Its likely that the investigation will be tight with details but I'm curious if anybody knows what happened there??? Improper wiring or a programming mistake. Why did it go in reverse and at full speed. I would think the drive to have a maximum frequency parameter set and the reverse to be disabled as well.
Surely there was a lack of emergency stopping mechanisms. I don't ski but I can imagine that there are a lot of people examining their ski lifts now for potential bugs like this one.
I hope all were ok, it looked pretty bad in the video!