Ready Steady Eddy

[JAZZCNC]

The VFD going faulty sounds exceptionally unlikely

Not that unlikely really has I've got one here that did just that in that it wouldn't turn off thru a signal or the control panel. Turned out to be faulty panel and was replaced by ABB but the fact was it stayed bloody on so no signal would have turned it off.!!

[Jonathan]

Not that unlikely really has I've got one here that did just that in that it wouldn't turn off thru a signal or the control panel. Turned out to be faulty panel and was replaced by ABB but the fact was it stayed bloody on so no signal would have turned it off.!!

What's your point? The timed switch off mentioned twice (now three times) in this thread would have turned it off. Also you can't judge how likely something is with such a small sample size.

A couple of months ago I got a 15kW ABB VFD. Wired it up correctly and 5 minutes later the input rectifier blew up leaving my ears ringing for about half an hour!

[JAZZCNC]

What's your point? The timed switch off mentioned twice (now three times) in this thread would have turned it off. Also you can't judge how likely something is with such a small sample size.

Point is that it does happen and equally you can't say it's unlikely because it has happened.!! . . . . . Agree thou it's irrelevant has it will be safe eventually if power cutoff is just delayed. ( I was more meaning it's unsafe if just relying on Signals.)