Hitachi Seiki with Yasnac LX1

[besc]

I am trying to find someone I can collaberate with on a HS HT20 with a yasnac LX1 controller. I am having a hard time finding someone. Mike.

[ajl6549]

I've used an mx3 yasnak, if that helps. Is this a lathe or mill

[CNCRim]

I worked with HS HT20 and HT40 for 5years, but don't ask me anything about the machine parameter. The machines are working great, I haven't attempt to change anything since day one.

[besc]

Thanks guys for the response. I need to be able to ramp my spindle up and down on stopping and going instead of full speed or dead stop at once. It is blowing out my output trasistors and they are 400 dallers each. Too much current stopping and going like this. I think I have a sick machine. Its a HS HT20, lathe. I like its accuracy. It has other issues that I will bring up in time but need to get this resolved first. Appreciate any help. Mike.

[JDC]

Originally Posted by besc I am trying to find someone I can collaberate with on a HS HT20 with a yasnac LX1 controller. I am having a hard time finding someone. Mike.

Mike,you are going to specify what kind of calibration-ie:axis,main drive,
pitch error?
JDC

[besc]

Well as stated above I need to know if there is a parameter for setting a rammp up and ramp down on the spindle starting and stopping. This starting and stopping on a dime is causing damage to the drive board. Cant remember what error mesage it is but if I do it too often I have to buy new expensive output transistors. A slow up and down speed would certanly be nice, if I am able to achieve this. Thanks. Mike.

[ajl6549]

It sounds to me like your spindle drive is bad. Unless you suspect somone has fiddeled with the acc./dec. parameters. Otherwise try swaping the drive with a known good one and see if the prob. goes away. If you don't have one to swap with you may have to send the drive out for repairs etc.

[besc]

Hmm. So there is no parameter to set so I can slowdown the acc/dec of the spindle drive. They want 800.00 before they even look at the board. Mike.

[CNCRim]

I think your spindle motor is number, we had a simular problem and it cost us $3200 to fix. Then my vice president decided to sell the machine and get new Mori instead fix them and I don't think there is parameter to control it.

[ajl6549]

There are parameters for acc./dec. etc. but they don't "unset" them selves. Also if the drive is bad adjusting the parameters won't change anything. I take it you don't have one to swap with?

[besc]

No. Dont have one to swap with. I get around the problem by putting in incremental Sxxx commands(S100,S200 etc) but this is a real hassel. Wish I knew the parameters. Thanks. Mike.

[JDC]

Originally Posted by besc No. Dont have one to swap with. I get around the problem by putting in incremental Sxxx commands(S100,S200 etc) but this is a real hassel. Wish I knew the parameters. Thanks. Mike.

Mike,You have a slight problem with the-improper set on your
Torque limit settings the ones with time base Accell&Decell
on your drive its' self.