servo and spindle drive regen load resistors

[daleman]

this morning i turned on one our vfoe only to discover within 5 mins the servo and spindle drive regen load resistors were glowing red i turned off the machine pulled the fuses not had time to look at the fault yet but welcome some ideas as to what caused this

thanks in advance for any ideas

[serviceman]

spindle drive shot servo dist board shot high incoming voltage bad regens

[Al_The_Man]

Sounds to me like the devices switching the regen resistors are shorted.
Al.

[daleman]

thanks for your input i can't see it being high input voltage as i have 9 other haas vf's running on the main supply will be looking in to it tomorrow hope it is not the spindal drive the machine was not doing anything at the time had just switched it on and powered it up went to switch the next one on then bam saw smoke had a look and the regen resistor was glowing red not good

[HaasTech83]

Sometimes the vector drive will short and just dump voltage onto the regen and thats what you get. Especially if the machine is just sitting there doing nothing. But one of things i check while im in there is the incoming voltage, dc buss etc. You can also check to see if there is voltage going to the regen when the power is applied to the servos. Check everything, all servo amps, motors and cables, and regen restitor, just to be safe.

[daleman]

problem solved the vector drive was to blame it was just dumping all the voltage straight to the regen hence the near meltdown when you switch it on called haas this afternoon and they will fit a new vector drive in the morning i was expecting a bit of a wait but that is pretty good service if you ask me

[daleman]

update vector drive turned up friday but the tech turned up on tue morning every thing went well untill the tech announced that the new vector drive was faulty as it did not work properly when he had installed it this was tue morning now fri night not seen or heard anything from haas as to when they will be back to fix the machine

[NC Cams]

Real encouraging feeling to see/know that the "new" service board the tech brings is DOA. Makes you wonder if the outfit ever heard of or did "quality control testing" prior to shipping of parts.

Check your service bill real closely. If they billed you for the service call wherein the faulty/DOA vector drive was installed, I'd be highly disinclined to pay it.....

[daleman]

the haas tech also ordered new regens found out yesterday that haas uk did not have any they have had to order them from the usa this will take our total downtime to 2 weeks plus that is if they fix it this fri

[NC Cams]

When I hear an "exclusive agent" tell me "we have to order it", I tend to go ballistic.

Typiclaly, they write up a P/O, fax or mail it with a "normal" order (to save or avoid freight) and simply wait for someone else to get over their lethargy and respond in kind to the order. Result: weeks of screwing around and lost productivity on your part and the "agent" doesn't feel any pain or loss - too bad for you and business as usual for him.

When I get the "it has to be ordered", reply, my response is "that is unacceptable". I them outline in logical, concise terms just how much their lack of part support is costing me in time and lost money - don't do this to the tech guy, he's as screwed as you. Take it up with the owner/manager of the local "agency". Tell him, nicely, to get up off his ass and FIND you a part to fix/service your machine.

Tell them what you expect and that you expect more from Haas, in reasonable terms of course - after all, they are a GLOBAL company aren't they??? They do have fax and phone service, don't they? DHL and Fedex fly planes DAILY all over the world, don't they? Haas does have expediters, don't they?. Why don't hey USE them?????

I don't see why, outside of customs B/S that you can't have a part shipped to you in a few days - providing Haas USA stocks it. God help you and Haas if they don't. If not, perhaps its time to find a new/better machine. If they don't service what you have, your service is only going to get worse, not better.

Global companies can/should offer better service that "we'll order the part and wait.....". You can bet the service agent doesn't want to wait for his money to be paid - why should you wait 2 weeks or more to have something that they are the exclusive agent for to be repaired or "ordered". Seems like lame to me.....

Sounds like it is time for some righteous indignation....

[daleman]

follow this link and read what haas uk say about commitment to service


http://www.haas.co.uk/support.html

[Geof]

Originally Posted by daleman follow this link and read what haas uk say about commitment to service....

I did and obviously your fall into the 6% that they do not carry as regular spare part stock.

Have you ever moticed how the people/companies who prattle on about their 'commitment' or whatever, are often the ones who fall down when it comes to actually performing?

And as NC mentions FEDEX and UPS airplanes are flying all the time; I can get replacement parts into the hands of my UK rep within four days so why does it take Haas two weeks.