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Author Topic: Kasuga NC mill to CNC ?'s  (Read 38922 times)

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Re: Kasuga NC mill to CNC ?'s
« Reply #100 on: June 09, 2012, 05:44:12 PM »
On page 5 the picture of the tach and resolver which is which? I found a place that has a drop in replacement encoder it takes the spot of the old resolver. http://www.quantumdev.com/products/optical_encoders/qd110.html

Offline Hood

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Re: Kasuga NC mill to CNC ?'s
« Reply #101 on: June 09, 2012, 05:57:51 PM »
Resolver was the geared one.
Hood
Re: Kasuga NC mill to CNC ?'s
« Reply #102 on: June 11, 2012, 10:25:35 PM »
So alot of progress was made today! I talked to John again and I was able to get all the displays to light up with his guidance and expert troubleshooting. Tomorrow I will be putting in a new power supply I have laying around and more tests to come. He suggested we sort out the bugs b4 I start the control swap. I'm excited and will keep u guys posted.
Re: Kasuga NC mill to CNC ?'s
« Reply #103 on: June 18, 2012, 06:36:32 PM »
So I found the short and pulled the wire now my power supply is getting 24V to the bandit and it powers up. Now my issue is that the servo motors are running away. They are not hooked up to the ball screws so I wouldn't crash. I was told it has something to do with the NC400. Any thoughts? I already checked the fuses on that panel are at least the 5 I could see and they are all good.

I still have no idea where that wire goes but I'll have to chase it down tomorrow.
« Last Edit: June 18, 2012, 06:38:13 PM by K_Labs »
Re: Kasuga NC mill to CNC ?'s
« Reply #104 on: June 18, 2012, 06:51:54 PM »
http://www.contraves-drives.com/pdf/M502001_d.pdf

So I found the answer but I don't know what it means.
Page 7-2 #4 Wherre it says: A runaway condition is cause for close scruting of polarities.

Offline Hal

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Re: Kasuga NC mill to CNC ?'s
« Reply #105 on: June 18, 2012, 09:49:59 PM »
The tach, armature, and or other polarities could be wired backwards. Start with one axis at a time. Most of the first runs on an axis is done at a slow motion settings.

Check the limit switches and E-stop are working correctly. Just for safety reasons.

Translation- If the tach or motor is wired backwards, the slide will take off until e-stop or limit switch is tripped. Check the manual for which wires to swap.
Re: Kasuga NC mill to CNC ?'s
« Reply #106 on: June 18, 2012, 11:21:17 PM »
Well funny u should mention that because that wire that was shorting was to the Z limit switch and it was triggered. Once I manually move the Z off the limit switch my short was gone and the power supply was fine.
Re: Kasuga NC mill to CNC ?'s
« Reply #107 on: June 21, 2012, 01:03:47 AM »
I was wondering... If I only need the NC400 amps for 100VDC for the servos could I just bypass the rest? It seems that my runaway problem is due to the 15Vdc + and 15Vdc-

Offline Hood

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Re: Kasuga NC mill to CNC ?'s
« Reply #108 on: June 21, 2012, 10:38:40 AM »
What is the +- 15v powering?

Hood
Re: Kasuga NC mill to CNC ?'s
« Reply #109 on: June 22, 2012, 12:57:25 AM »
I have no idea it's what the guy who has been helping me was telling me to look for. I tested the terminal strips for each axis. The X Y and Z each have 2 wires w/2 inside of each wire for a total of 4 wires. Each terminal strip has 1 wire on 1&3 and the other wire on 4&5. So anyways I tested the voltage and I was getting 2.4Vdc for 1&3 on X and -1.4Vdc for 4&5 Z was almost the same just with some variation in the voltage but minimal. However the Y has 2.4Vdc on 1&3 and 1.4Vdc on 4&5. So X is +V and then -V, Y is +V and +V then, Z is +V and -V. Could that be my problem?

On page 5 the pic with the NC400 on it. It's the wires that go into the white terminal strip. The single one in the back.
« Last Edit: June 22, 2012, 01:03:18 AM by K_Labs »