Re: [CAD_CAM_EDM_DRO] Re: loosing steps

Here's what I found out.
The Oriental Motor specifications are:

Holding Torque: 305 oz-in(for Unipolar), 430 oz-in(for Bipolar) at full
step
mode.
Voltage: 2 Volt (Unipolar), 1.4Volt (Bipolar)
Amperes: 4.5A/phase (Unipolar), 6.3A/phase (Bipolar)
It is a 8 wire motor hooked up in parallel. it is hooked to gecko 201. I
don't know if its unipolar or bipolar. I guess if its bipolar I need
more amps. I think I need a 390k resistor? can I put a smaller Resistor
and raise the amps a smaller amount ? I sdont think my power supply will
handle a full 6.3 amps, its a 10 amp supply.
Jon Elson wrote:

>
> Gene wrote:
>
> > medium speed is about 60 on the EMC scale for feed override . it makes a
> > clicking sound and then it goes but out of sync.
>
> Oh, yes, one more thing. What is the max_acceleration and default_acceleration
> parameter set to in the xxx.ini file you are using? Too fast an acceleration will
> cause any stepper motor to lose sync. This is expressed in units of inch/sec/sec
> (or mm/sec/sec). 20 In/sec^2 is a lot of acceleration. Try about 2.0 to 3.0
> for a much more reasonable value. Later, once you've found the limits of
> speed under load, you can then increase this acceleration until it causes
> problems, then back off a little.
>
> Jon
>
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