Time for a Mesa Card Upgrade.
Thanks,
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store.mesanet.com/index.php?route=produc...=7i76&product_id=119
store.mesanet.com/index.php?route=produc...oduct&product_id=215
Rick G
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Assuming all other components of your machine are capable of faster speed
That is the crucial point.
There is a finite limit to how fast a machine can move, factors include gearing, multi-stepping, table weights, motor power, driver capabilities, power supply etc
You need to be sure that spending £200 on cards will actually do anything.
If you have a low power, heavily geared, small router it might be a complete waste of time and money.
A 32K base-thread is pretty good.
If you even could increase speed to 200ipm, are your motors capable of cutting a given depth at that speed or will you have to reduce cutting depths, in which case you are moving faster but doing less, so no advantage.
Increasing pulses will not make you motors more powerful, in fact the opposite, the higher the speed the lower the torque.
Think hard on it.
regards
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I am running into a step rate issue with my current set up.
Also, for stepper systems voltage is king, my plasma is stepper driven and I use a 56v power supply with Gecko 203v drives. I selected them after careful study of the information on the wiki about steppers. I suggest reading up on stepper performance first.
JT
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As ArcEye pointed out stepper motor torque drops off rapidly after a certain rpm.
Rick G
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type of stepper drives used & voltage and amperage of power supply is a good start .
and if using microstepping why ? , (using half step is a good base )
what type of machine is it ?
in a lot of cases increasing voltage will help , but this depends on the spec of the stepper driver .
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You can use a 5i25 as a faster parallel port it has the same number of signal pins and GND pins, though some pins that are GND on the parport can be configured to be 5V on the 5i25.I Will the 5i25 give me the performance upgrade I am looking for or do I also need a card to go with it?
Also, all signal pins can be configured as inputs or outputs.
You can't change the pin numbers of the step and direction pins in HAL like you can on a parport, though. You need to either find a compatible firmware file, make a compatible firmware file or wire the hardware to suit a firmware file.
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'
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I could also decrease my micro stepping, however I do like the resolution I get with 2000 steps/rev which is pretty close to .0001
Are you telling us you need 2.5 micron resolution from a router?
![:laugh: :laugh:](/media/kunena/emoticons/laughing.png)
Just reduce your microstepping to 4x and see if you can more than double your speed without hitting problems - simple, no cost test.
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From reading the responses it sounds like I should upgrade my stepper drivers and maybe my power supply. I could also decrease my micro stepping, however I do like the resolution I get with 2000 steps/rev which is pretty close to .0001'.
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Maybe not yet.
The point is you need to find out what the limiting factors of your machine are. You stated you wanted to go faster and you could not generate steps fast enough to do so. In which case hardware step generation will allow you to do so.
But it would be nice to see if the rest of the machine can go faster. For the same step rate you have at 10 micro steps per revolution if you change to say 5 micro steps revolution for the test the machine could theoretically move twice as fast.
So if you reset your drivers to a lower step rate, change your configuration to reflect the new setting and see how fast your machine can now operate. If it test out O.K. and you want to keep using 10 micro steps the mesa setup will allow you to do that.
Here is a sample torque curve...
www.automationtechnologiesinc.com/wp-con...KL23H286-20-8BTC.pdf
Rick G
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