Thread: Dead VFD
After about 10min of running a file the cnc today there was a emergency triggered and everything ground to a halt. I reset everything however after stating it back up i found that the spindle now does not work. It is a Huanyang vfd for a 2.2kw spindle There is still power going to the keep pad and i can see it switching via mach 3 but nothing is spinning.
Is it likely the vfd has just died on its own or more likely something has caused it?
I never found out exactly what was causing my previous problem
however i started transferring the file on to the computer and it didn't do it again in the last 3 times i used it.
Could they be linked?
Im in a bid of a hurry to get it back running so looking for some advice on what i should do and if I'm going to need to be ordering a new vfd should i go for the same one or something else?
ok we did some testing and mysteriously it has started going again which is almost more annoying as i have no idea why it stopped in the first place!
As Jazz says, if it's critical, get a spare.
Plenty alternative options can be found at https://inverterdrive.com/group/AC-I...=Power%7c2.2kWAvoiding the rubbish customer service from AluminiumWarehouse since July '13.
yes i think i may order a spare tomorrow anyway any other recommendations other than the china one or just get the same type of eBay and if so what should i be paying on average for one of the china ones now?
Did it start working with no changes or after you removed & re-applied power?
Some VFDs require errors to be cancelled or the power to be cycled before they'll run after an error.
It's good to have a spare but remember to follow the procedure for capacitor conditioning if it gets left on the shelf for a long time before use,
- NickIf you will not be swayed by logic or experience simply pick the idea you
like best, but ask yourself why you sought advice in the first place and,
for a simple life, perhaps consider not doing so in future
I had turned it of once and it didn't re start then had it off for a little longer and that's when it did, im wondering about over heating but it seams unlikely as it wasn't running for long and it was all feeling quite cool. Im just about to switch it all back on and give it another go this morning
Nick, Can you give us some pointers to the procedure for in-circuit ?
RobIt takes all sorts to make a world, I am just glad I am not one of them.
For capacitors made in the past 20 years you do not need to condition them after a period of not using them. For an explanation as to why have a look here https://en.wikipedia.org/wiki/Alumin...rage_or_disuse
In most cases it is impractical to do this process on equipment without a major dismantle, which may cause additional damage.
The Following User Says Thank You to Graeme For This Useful Post:
so i used the machine today for about a hour and its worked perfect, the spindle was fine and did not do anything out of the ordinary! so the mystery is still out there!
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