Refit Kitamura MyCenter Zero

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9 years 6 months ago #92158 by Rescue35
Hello all, I've been lurking and reading for awhile. Now I need some advice. I recently purchased a 1989 Kitamura MyCenter Zero With Fanuc O Mate and Sanyo Denki drives (BA030-04) and servos (65BM004) with a Z axis fault. I was told it was the encoder. The problem was the brake not disengaging. Once that was fixed the Z axis drive faulted with no load, the solution per the manual is to replace the drive.

Instead of fighting this thing through all the problems it may have that I haven't even gotten to yet, I would like to do replace the axis drives and steppers and use LinuxCNC as the controller. I would like to keep the spindle servo and drive so that I can use it to ridged tap and index for tool changes. I found this thread regarding setup of the spindle. forum.linuxcnc.org/30-cnc-machines/29530...center-spindle-motor The 12 position ATC and its controls can wait for phase 2. My main goal is to get the axis, spindle, and drawbar operational.

Here is the hardware that has stuck itself in my brain.
Panel mount touchscreen PC (need to load Linux and check latency)
Mesa7I76E
Clearpath SD servos on X, Y, and Z

Optionally I could reuse the amplifier and servos that work with a Mesa 7I77. Any suggestions on a reliable amp for use with the stock servos?

What would you do? Any help is greatly appreciated.

I have built a couple of small, stepper driven, CNC machines before and ran them with Mach3. I was very disappointed in the control and rigidity. I have installed linuxcnc on a couple of computers in the past to try it out. I have never ran a machine with it.

I tried to link some photos of the machine but recived an error stating I have too many links. I'll try more once I prove Im not a spammer ;)
Bad Z Amplifier
image missing http://i6.photobucket.com/albums/y243/Rescue35/Machine/20170422_120929_zpsm3nylzsr.jpg
image missing http://i6.photobucket.com/albums/y243/Rescue35/Machine/20170422_120938_zpsnot5adxq.jpg

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9 years 6 months ago #92254 by andypugh
Do you have any specs for motor type, current and voltage? (and feedback type, too)

There are lots of drive possibilities, which need to be whittled down a bit.

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9 years 6 months ago #92285 by Rescue35
Thanks for the help.

The spindle is 230v 3 phase AC 2.2 kw continuous (3.7kw for 30min). It is a brushless servo with position control through a D/A converter.
Sanyo Deinki
Controler 65BA030dxt
Encoder 1000 p/r
Scale of velocity command voltage Ei=3V/Krpm

The axis motors are 3 phase brushless servos. 230v
Sanyo Deinki
X&Y 65BL014HXE01 (14kg/cm or 194 oz/in)
Encoder 2500 P/R
3000 rpm

Z 65BL030HBE08 (30kg/cm or 416 oz/in)
Encoder 1500 P/R
3000 rpm
Axis controllers are 3 phase full wave 30 amp
Sanyo Deinki
X&Y 65BA030DXT04
Z 65BA030DXT06

The axis encoders use A+-, B+-, C+-, U+-, V+-, W+-, 5V+,5V-.

D/A Converter I/O
image missing http://i6.photobucket.com/albums/y243/Rescue35/20170428_113735_zpszf485n82.jpg

I will work on getting the manual scanned.

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9 years 6 months ago #92313 by tommylight
That about encoders using UVW is not right.
They are incremental encoders with A/A, B/B, and C/C that should be index.
The servos seem to use cv/ccv signals, as far as i know 7i77 can do that, but you should wait for PCW or Andy to confirm that.
The following user(s) said Thank You: Rescue35

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