Roland mdx-650a question

More
18 Nov 2013 11:01 #40916 by nick gill
Replied by nick gill on topic Roland mdx-650a question

board's budget was USD 8000


:woohoo: USD$8000 !
That's ridiculous! I'll get another quote for you.

12,000 rpm is not enough for very small cutters in aluminium. 400W cannot cut aluminium with a cutter > 5mm dia

Please Log in or Create an account to join the conversation.

More
18 Nov 2013 11:15 #40917 by jlviloria
Replied by jlviloria on topic Roland mdx-650a question
I guess not, but I will not cut aluminum, go for special plastic.

because you should know that the servomotors are not going to take much cutting, not even in plastic.

if it was ridiculous!! but this new machine costs USD38.500!! with that money get something more robust not you think?


I think jagger also has hall sensor, but that's not important, may or may not have, the important thing would be to define the driver for the jagger.

Please Log in or Create an account to join the conversation.

More
18 Nov 2013 11:33 #40918 by nick gill
Replied by nick gill on topic Roland mdx-650a question
Here are the voltages to chassis:

Black +12V
Red +12V
Brown +12V
Brown +5V
Red 0V
Orange +5V
Yellow +5V
Green +5V

Attachments:

Please Log in or Create an account to join the conversation.

More
18 Nov 2013 11:34 #40919 by nick gill
Replied by nick gill on topic Roland mdx-650a question

the important thing would be to define the driver for the jagger.


Explain some more about this please

Please Log in or Create an account to join the conversation.

More
18 Nov 2013 18:45 #40929 by andypugh
Replied by andypugh on topic Roland mdx-650a question

What I don't understand is why does the spindle have hall sensors?


It is (almost definitely) a brushless motor.
With a brushless motor you need Hall sensors to know which of the motor phases need to be energised to make the motor run.
en.wikipedia.org/wiki/Brushless_motor

Please Log in or Create an account to join the conversation.

More
18 Nov 2013 19:01 - 18 Nov 2013 19:12 #40930 by nick gill
Replied by nick gill on topic Roland mdx-650a question

With a brushless motor you need Hall sensors to know which of the motor phases need to be energised to make the motor run.

Ok, so you can controll the speed and rotation this way.
Is +5V GND -5V the usual way to drive hall sensors?
What in your opinion Andy, are the questions I need to be asking Jaeger about their spindles? Such as
What method does the spindle use to contol speed (frequency)
and What is the frequency range required to govern your spindle
Sound right ???

Many thanks in advance
Last edit: 18 Nov 2013 19:12 by nick gill.

Please Log in or Create an account to join the conversation.

More
18 Nov 2013 19:33 #40932 by andypugh
Replied by andypugh on topic Roland mdx-650a question

Is +5V GND -5V the usual way to drive hall sensors?

All the ones I have seen have been +5V and 0V power and then the output pin is pulled up to 5V by a resistor. When it is activated by the magnets it pulls the output pin down to 0V.

What in your opinion Andy, are the questions I need to be asking Jaeger about their spindles? Such as
What method does the spindle use to contol speed (frequency)
and What is the frequency range required to govern your spindle


The Jaeger spindles are induction motors, and need to be controlled by a variable frequency drive. Jaeger can probably supply a suitable drive.

Note that of the three you listed, two have automatic tool change (with HSK25 tooling) and the last is manual tool change. Make sure you have a source of HSK tooling before committing yourself.

Please Log in or Create an account to join the conversation.

More
22 Nov 2013 08:54 #41102 by jlviloria
Replied by jlviloria on topic Roland mdx-650a question
Andy,

I need help.
connecting my system (4 servomotors), but did not work.
I did the hardest disarm all and start over.

try to ride one just to see because they had worked and check the connection with one servomotor,

but now I have problems when I try to move the servomotor, sueve moves clockwise, and sometimes a touch touches servo axis for rotation and in the other direction also plays a touch servo axis, but rotates with vibration, probe all servomotors, test all drivers. and the same thing keeps happening.

the only thing different was putting on UTP cable to the hall sensor and encoder.

my question is:

that may be causing this? :(

Please Log in or Create an account to join the conversation.

More
22 Nov 2013 08:58 #41103 by andypugh
Replied by andypugh on topic Roland mdx-650a question
Too late here, I need to sleep.

Can you explain the problem in more detail and remind me what hardware you have?

Please Log in or Create an account to join the conversation.

More
22 Nov 2013 10:00 #41104 by jlviloria
Replied by jlviloria on topic Roland mdx-650a question
pico-systems.com/acservo.html

www.shinano.com/motors/docs/LA052.pdf


understand, is that you have to rest!

I had worked well when I tried it with a single servomotor.

assemble the whole package (4 servo) motors energized but not move.

disarmament all, to see if he had a connection error.

turned to connect a single servo motor home, but now what I wrote about in the previous post.

in negative direction, moves well, sometimes you have to give a touch to the motor shaft to move


in positive direction, moves vibrated, sometimes does not move, you feel a buzz in the engine,

I changed the PID, up and down P, play with D but nothing's the same with all servomotors and all drivers.

test all sensor connections hall, and this was the one that moved,

there may be bad?

thanks

Please Log in or Create an account to join the conversation.

Moderators: cncbasher
Time to create page: 0.123 seconds
Powered by Kunena Forum