Roland mdx-650a question

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10 May 2013 08:19 #33861 by jlviloria
greetings to all.

Today annoyed with this little machine, buy it at a great price considering LinuxCNC ... as the solution.!

But I realize that not have the main card. This board controls all servomotors.

ac-servomotors
dc-spindle

so I have servomotors, encoders but I have no drivers.

my question is I can adapt some other drivers or is it better to buy servomotors and new driver.

roland consider the option, but I failed communication with them.

thanks in advance for your help.








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10 May 2013 18:43 - 10 May 2013 18:52 #33880 by andypugh
Replied by andypugh on topic Roland mdx-650a question
They look like brushless DC servo motors with Hall sensors and Encoders.

Do you have any idea what voltage and current they work on?

[Edit]
A bit of web-searching says that they use AC servos on the axes and a 400W DC-brushless motor on the spindle.

As far as LinuxCNC is concerned a DC-brushless motor and an AC servo are exactly the same thing.

400W is a bit much for the Mesa 7i39, which would have been my first suggestion.
It also a bit low for the 8i20, espcially if the supply voltage is < 50V.

Maybe the Pico amps? www.pico-systems.com/acservo.html
Last edit: 10 May 2013 18:52 by andypugh.
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10 May 2013 20:46 #33884 by jlviloria
Replied by jlviloria on topic Roland mdx-650a question
Andy, greetings .... thanks for your answer.

MIra this machine has information but nothing about servomotors have neither plate nor information anywhere.

in the brochure and internet product say they are AC-digital-servo and spindle is the DC-motor.

but looking at the spindle motor I realize that says AC100V 400W.

This totally confuses me. know I'm not the most expert in these matters.

the brochure accompanying the machine.

www.rolanddg.com/PDF/mdx-650.pdf


this photo is spindle motor::





Thanks
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13 May 2013 00:10 #33963 by andypugh
Replied by andypugh on topic Roland mdx-650a question

in the brochure and internet product say they are AC-digital-servo and spindle is the DC-motor.

Despite the difference in the names, these types of motor are effectively identical, and can be driven by the same drives.

The Spindle motor appears to run at 100V, so the 7i39 would not be suitable.

Do you still have the power supply? If so, what power was supplied to the missing driver boards?

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16 May 2013 21:49 #34194 by jlviloria
Replied by jlviloria on topic Roland mdx-650a question
Andy,

The power supply if any, has 24VDC output and spindle unit is brand roland, and has a 94VAC input.

I got the information of servomotors of the axes,

SHINANO KENSHI
LA052-040E7N01

enclosing a brochure, I hope with this I can you please collaborate to choose the best driver for these servomotors.

Thanks.
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16 May 2013 22:23 #34196 by andypugh
Replied by andypugh on topic Roland mdx-650a question

SHINANO KENSHI
LA052-040E7N01.


The servos look like a very good for for the 7i39.
The spindle motor is less convenient to control. Maybe the Pico brushless drive
www.pico-systems.com/acservo.html
You can probably control that with one leg of a 3-phase PWM.
What you would end up with is a system of 2 x 7i39 with 4 x 3-phase PWM, but with one of the 7i39 channels not being used except as an encoder connector, and the pwm broken-out to the Pico amplifier with a special cable.
(Not the neatest solution).
it might be easier to use something like
www.ebay.com/itm/B25A20ACQ-CL1-ADVANCED-...-AS-IS-/360637778409
For the spindle (but you only have 2 hours to decide :-)
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16 May 2013 22:54 #34203 by jlviloria
Replied by jlviloria on topic Roland mdx-650a question
Andy this machine has 4 axis with the spindle would be five drivers right?

that would be the most convenient. 7i39x2 purchase and purchase separate spindle drivers?.

I think that's what you're writing me up, but I can not understand well with the translation of the translator.

communication is simple spindle motor, with any drivers?

cables attached photo that has the spindle motor

Thanks.





Jorge
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16 May 2013 23:02 #34205 by andypugh
Replied by andypugh on topic Roland mdx-650a question

Andy this machine has 4 axis with the spindle would be five drivers right?
that would be the most convenient. 7i39x2 purchase and purchase separate spindle drivers?.

Yes.
So, 2 x 7i39 and 1x any other random brushless drive looks ideal.

cables attached photo that has the spindle motor

That does look like 3 power wires + power/gnd/3 Hall sensors.
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27 Oct 2013 04:31 - 27 Oct 2013 05:18 #40332 by jlviloria
Replied by jlviloria on topic Roland mdx-650a question
Hello,


I have a problem to connect my spindle motor.

REF = UGBTEH-5
400W
100AC
brand = NIDEC

is the one in the photo above,


is that the 3 wires (black, red, brown) are the power cables.

and the others are the SENSOR HALL.

Here is where I have the problem more I searched the internet, I wrote to the manufacturer and nothing I could define the configuration of the cable.

I have fear going to damage the motor, when connected wrong.

any idea how can know the configuration of the cables?

driver. = pwm servo de picosystem

any test?, or someone who has already worked with this brand?



thanks,

Jorge Viloria
Last edit: 27 Oct 2013 05:18 by jlviloria.

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27 Oct 2013 06:42 #40334 by andypugh
Replied by andypugh on topic Roland mdx-650a question

I have fear going to damage the motor, when connected wrong.


Spotting the motor windings is easy with a resistance meter.

I am not sure how to identify the Hall sensors. Perhaps it is worth buying a hall sensor and seeing what it looks like to you muiltimeter in diode mode?
(You can also try connecting +5V to the output pin, and see if it damages it.)

If I had to guess, it would be red +5V Brown 0V, and Green, Yellow, Orange as the Hall outputs .
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