Re: camtronics vs gecko

"Tim Goldstein" <timg@k...> wrote:

> To get good microstepping you need to have the voltage in the 10 -

25 X

> the rated motor voltage. Half stepping is very tolerant of low

voltage.

> What is the voltage rating of your motors?

3.2V 2A

So 10X - 25x will make it 32 - 80. I have a 24VAC transformer which
makes the PS 36VDC which will take it to the lower of the range you
mention for the Gecko.

> You say that you are "faulting out". Tell us more.

I mean the motor making chattering noise without any movement.

I have previously noticed that sometime when you set your max.
stepping rate to a low enough value, one can enter 1000 ipm and the
motor will whirr happily without any problem, but at that max.
stepping rate, not the commanded ipm. In this case, when I command a
move at, say 11 ipm, the motor just shudder, but does not move.


What software are you

> using and is the fault something the software is throwing or do

you mean

> the drive is actually having a hardware fault?

I am using DeskWinNC driven from a P3


I will guess that you may

> be using EMC and are seeing a follow error under freqmod.o. If so

you

> need to tune the PID loop to eliminate the follow errors as they

are

> totally software derived and related to your increased step rate

and

> have nothing to do with the ability of the drivers.

Wish I can muster up enough courage to migrate to Linux, but that
will be a future project. Unfortunately still stuck to Bill Gates.


Getting flooded with emails, but vaguesly remembered some posts
where someone was using almost the same config - sherline-camtronics-
sherline motors but getting much higher speed > 30 ipm. What do they
have that I don't?

Thanks

andrew