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Messages - jonny quest

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111
General Mach Discussion / Re: burned a servo
« on: September 18, 2012, 06:57:12 PM »
Thank you! On phone 3 times with gecko... never once did they mention this.

I'll trouble shoot with this later tonight.

112
General Mach Discussion / Re: burned a servo
« on: September 17, 2012, 09:37:45 PM »
As far as I know... pins 6/7 control the Z... but they only send a 5v signal to the Gecko telling Gecko to apply power to servo.

If my servo won't even accept enough power at rest without faulting... it has nothing to do with the pins, computer, or Mach

113
General Mach Discussion / Re: burned a servo
« on: September 17, 2012, 09:34:59 PM »
there's a limit pot that you turn on the Gecko drive. The Gecko isn't allowing me to turn up this pot switch enough to allow the servo to move the Z axis, the limit controls the voltage and or amps going to the servo. Even at rest if I turn the pot switch up past about 30% A fault light comes on the Gecko.

Not changing any settings in Mach at all.

114
General Mach Discussion / Re: burned a servo
« on: September 17, 2012, 03:37:41 PM »
It's a brand new motor. I knew old one was toast...I replaced it.

The problem is, I can't tune new one. The drive faults anytime I try and put more than about 30% power to it.

I've verified that the encoder works perfect, the drive works like it should, the new servo works like it should.

All other drives work like they should, and all 5 drives work off same power source.

I'm stumped!

115
General Mach Discussion / Re: burned a servo
« on: September 17, 2012, 12:00:41 AM »
I had to walk away from it for a couple of days... I'll keep you guys posted.

What really frustrates me is the fact that I can describe the problem. Gecko won't accept enough limit to power servo to move Z. When I called gecko on this they didn't have an answer. Its not the gecko thats bad.. but something either up or downstream of the gecko.

I'd think that gecko would be able to tell me what this could be.

116
General Mach Discussion / Re: burned a servo
« on: September 14, 2012, 05:39:00 PM »
Those are encoder wires. Had them off testing them.

117
General Mach Discussion / Re: burned a servo
« on: September 14, 2012, 04:20:53 PM »


Here's a better picture.

Hood id correct the middle ones a re spindle control.

The thing is, the Gecko faults...WITH NO MOVEMENT AT ALL ABOVE ABOUT 30% ON LIMIT. Doesn't that rule out the bob pins?

The encoder is constantly giving feedback to servo at all times, correct?

I'm almost sure the reason Z isn't moving up and down is because I can't turn limit up enough (without a stationary fault) on Gecko drive so it has enough voltage to move servo.


118
General Mach Discussion / Re: burned a servo
« on: September 14, 2012, 01:49:44 PM »
thats what i was hoping you could tell me from bigger pic. it seems like they go direcly to drive

119
General Mach Discussion / Re: burned a servo
« on: September 14, 2012, 01:26:25 PM »




I did take working Gecko drive from Y, and put it on the Z. Z still didn't work. I also took Z drive and verified it worked on the Y. If that maks sense... drive is working correctly.

As you can see in first pic, my Z drive is close to where parallel wires come into cabinet. They seem to go directly to drive.


120
General Mach Discussion / Re: burned a servo
« on: September 14, 2012, 02:51:39 AM »
I don't know what a "bob" is?

Apparently there is no breakout board.... so I'm told. I'll snap a picture tomorrow and post cabinet electronics.

Couple more tests I did... verified the 4 encoder wires aren't shorted.

I then disconnect my two Z axis servo wires from Z gecko... piggybacked them to my working Y... and jogged Y. Z moved fine. That verified Z servo Is working correctly (it used Y's power and encoder)

I think there is only two possibilities left, bad encoder... or power going to gecko.

I did check voltage variance on working drives to bad drives.. they do seem similar.

Could a bad encoder head cause gecko to not allow me to turn up limit past 30% without faulting?

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