On 02/09/2015 06:36 AM, Dean Posekany wrote:
Thanks everyone for your insight. Its really been helpful. I think
I'm going to pick up one of the cheap MA860H's, install it and use the
pulled Parker drive for a back-up. That way I can give it a spin before
committing to the other two axes.
I had a OEM750 drive sitting on my desk so I opened the case and took a
couple of pictures of the board.
This is a 1997 vintage drive.
https://www.dropbox.com/s/g90twchelqan52b/2015-02-09%2013.23.13%20%28Medium%29.jpg?dl=0
On 02/08/2015 08:40 AM, Dean Posekany wrote:
... snip
only (at least for now) a 3-axis machine. But, six years later I've lost
two additional OEM750's and I'm now running on my last three. Another
failure and I'm down and its decision time.
...snip
Don't throw your bad drives out. If you want
On Monday, February 09, 2015 02:59:45 PM Dave Cole wrote:
I had a OEM750 drive sitting on my desk so I opened the case and took a
couple of pictures of the board.
This is a 1997 vintage drive.
https://www.dropbox.com/s/g90twchelqan52b/2015-02-09%2013.23.13%20%28Me
dium%29.jpg?dl=0
Thanks everyone for your insight. Its really been helpful. I think
I'm going to pick up one of the cheap MA860H's, install it and use the
pulled Parker drive for a back-up. That way I can give it a spin before
committing to the other two axes.
Anyone out there have any proven step and
On 2/9/2015 1:46 PM, Kirk Wallace wrote:
On 02/09/2015 06:36 AM, Dean Posekany wrote:
Thanks everyone for your insight. Its really been helpful. I think
I'm going to pick up one of the cheap MA860H's, install it and use the
pulled Parker drive for a back-up. That way I can give it a spin
Thanks John. Never have seen the Leadshine drivers. I'll take a look.
On 2/8/2015 12:16 PM, John Alexander Stewart wrote:
Dean;
Personally - my location makes my situation different than yours.
I have 3 CNC builds - two with Gecko 540s, one with Leadshine stepper
drivers ordered from
Hi Jon:
Thanks for the input. I guess I had two things that I wondered about
when I was considering this. What, if anything special, am I getting in
the big name industrial drive from Parker that I can't get from a
lower priced Gecko or Leadshine? And is it worth the money. And
second, are
On 2/8/2015 11:40 AM, Dean Posekany wrote:
A little background :
About six years ago, as I was just starting to design my shop-built
gantry machine, I came across a SUPER deal on Ebay for six sets of drive
components. Each set included a line filter, Parker OEM300 75V, 7.5A
power supply,
On Sunday, February 08, 2015 11:40:19 AM Dean Posekany wrote:
A little background :
About six years ago, as I was just starting to design my shop-built
gantry machine, I came across a SUPER deal on Ebay for six sets of drive
components. Each set included a line filter, Parker OEM300 75V,
A little background :
About six years ago, as I was just starting to design my shop-built
gantry machine, I came across a SUPER deal on Ebay for six sets of drive
components. Each set included a line filter, Parker OEM300 75V, 7.5A
power supply, Parker OEM750 stepper driver and a stepper
My old Starturn lathe came with a smaller drive that failed, the
repair was about £4 for a chip, it can be very cheap to do your own
drive repair.
Dave
On 08/02/2015, Jon Elson el...@pico-systems.com wrote:
On 02/08/2015 10:40 AM, Dean Posekany wrote:
Here's my question for the worldly
Dave:
That crossed my mind and I've done some SMD board repair before. I've
spent the past two days searching for repair info on these drives and
have come up empty. I've got no clue as to where to start on these as
far as repair goes.
On 2/8/2015 12:39 PM, Dave Caroline wrote:
My old
Dean;
Personally - my location makes my situation different than yours.
I have 3 CNC builds - two with Gecko 540s, one with Leadshine stepper
drivers ordered from China.
Ok - of the Gecko G540 machines; one is Mesa 5i25 driven, the other is
software stepping. The 5i25/G540 really works VERY
On 02/08/2015 10:40 AM, Dean Posekany wrote:
Here's my question for the worldly experience of the group. I'm retired
and this is a serious hobby machine and I don't have a great deal of
money that I can throw that this. So when the inevitable failure of the
next stepper driver occurs, what
On 2/8/2015 2:01 PM, Gene Heskett wrote:
Yes, I am a Certified Electronics Technician. And I like to teach. And
being both 80 yo, and long retired myself, I do consider the costs in
the long view if I can.
Thanks Gene. I'm a loong way from an electronics technician. So, if
you're
On 2/8/2015 2:16 PM, Kirk Wallace wrote:
On 02/08/2015 10:11 AM, Dave Cole wrote:
... snip
I'm wondering why they are failing on you?
Do you have the drives heat sinked?The back of the drives are smooth
aluminum and are designed to be
heatsinked to a backplane or the heatsink that
On 02/08/2015 01:19 PM, Dean Posekany wrote:
... snip
Stupid question time: How would one do this? Currently I have a
switched feed that feeds --line filters---power supplies---drivers.
Would I need to put a switch between each PS and driver?
On my mill, I think I should have linked the
On 02/08/2015 11:16 AM, Kirk Wallace wrote:
... snip
technology and components to run the PWM at higher frequency. I got a
Leadshine'ish (MA860H from eBay) drive to replace one of my blown out
drives and the current limit is silent, meaning the frequency is
probably above 10kHz. I suppose
On 02/08/2015 11:40 AM, Dean Posekany wrote:
Hi Jon:
Thanks for the input. I guess I had two things that I wondered about
when I was considering this. What, if anything special, am I getting in
the big name industrial drive from Parker that I can't get from a
lower priced Gecko or
On 02/08/2015 10:11 AM, Dave Cole wrote:
... snip
I'm wondering why they are failing on you?
Do you have the drives heat sinked?The back of the drives are smooth
aluminum and are designed to be
heatsinked to a backplane or the heatsink that Parker sold (use heat
sink compound).
If you
On 2/8/2015 1:11 PM, Dave Cole wrote:
I'm wondering why they are failing on you?
Do you have the drives heat sinked?The back of the drives are smooth
aluminum and are designed to be
heatsinked to a backplane or the heatsink that Parker sold (use heat
sink compound).
Hi Dave:
Yea, I
On 2/8/2015 12:01 PM, Gene Heskett wrote:
If you have an oscilloscope, bad/old caps will be obvious because of the 20
volt or more noise spikes from the motor drivers at the supply outputs.
I'd open them up and have a look at the capacitors for bulging and leaking.
1997 is in the capacitor
Hi Dean,
I've been using imported stepper motors and drivers (the type you find
cheap on eBay) and have been very happy with them. They have generally
much more robust designs than the older high dollar industrial controls,
and they're much smarter. The new stepper motor controllers have
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