Date   
Re: cheap retrofit with the Allegro UCN5804B chip

cncwannabe
 

Peter,

You should be able to find schematics in the files section of this or the F1 group. I'll summarize what you will find.

There is a six pin connector for each axis on the F1 Stepmotor board. They are designated X34, X35, and X36. The pin #'s and labels for each axis are:

Pin Signal
1 5V
2 GND
3 C
4 D
5 A
6 B

The ABCD signals match the UCN5804B data sheet.

You may need to add 5V pull-up resistors to the outputs of the UCN5804B. I don't know if the Stepmotor board provides them. Hopefully it doesn't have pull-downs. You may also need to provide an intermediate buffer (CMOS inverters would do) to provide some noise margin due to the Darlington transistor outputs of the Allegro part. You want the logic zero output to be well below 0.8V.

The EMCO system uses the "two-phase drive sequence" described in the data sheet.

Good luck with your conversion.

Walt

--- In Emco_cnc_users@..., "keizer.peter" wrote:

Hi guys,
While searching for a cheap (an temporary) way to retrofit my F1 (and
maybe also the 5CNC) machines i found this old message here on the
beard:
"Hi
Funny, this seems to be the first post :)
A little background on my experiences.Okay, I own a F1 CNC mill for
about four years now.The native programming for the F1 is in a word
SUX.So, I look around and found the company WelSoft,its
www.welsoft.co.uk and looked at their Wellmillconversion board. Simple
thing methinks, butgodalmighty aint they expensive!!!So, I do a little
research on the way the wellmillconnected to the emco. Having a circuit
diagram forthe F1 helps a lot :)
Lo and behold, I came up with a design that worksfor the past 3 years.
I use Allegro's UCN5804B chips for step/dir control,TurboCNC from DAK
engineering for the Gcode to Step/dir translator,DeskProto for STL to
GCODE translator andSolidworks for design.
If anyone need some help...
Gelandangan."
I have searched in google, i have read basically every message up here
and also the EmcoF1Mill group.But i couldn't find any good explanation
of how to do this.
It seems that it's possible to actually use the Emco stepdriver board
and the original drivers.Then you just hook up the machine to your pc
and use it with Mach3 or whatever and use it like that.
Is there anyone that knows how it works or can be done?
I've already ordered 3 of those chips on ebay, since they're very
cheap.I wasn't sure whether i needed 1 chip per axis, or one chip per
machine.
I hope one of you guys can help me out!
Thanks a lot in advance!
Peter Keizer.
(I'll be posting this same question in the EmcoF1Mill group.If we can
figure out how it works, i'll make a nice tutorial of it so others can
do it as well.)

cheap retrofit with the Allegro UCN5804B chip

keizer.peter <keizer.peter@...>
 

Hi guys,

While searching for a cheap (an temporary) way to retrofit my F1 (and maybe also the 5CNC) machines i found this old message here on the beard:

"Hi

Funny, this seems to be the first post :)

A little background on my experiences.
Okay, I own a F1 CNC mill for about four years now.
The native programming for the F1 is in a word SUX.
So, I look around and found the company WelSoft,
its www.welsoft.co.uk and looked at their Wellmill
conversion board. Simple thing methinks, but
godalmighty aint they expensive!!!
So, I do a little research on the way the wellmill
connected to the emco. Having a circuit diagram for
the F1 helps a lot :)

Lo and behold, I came up with a design that works
for the past 3 years.

I use Allegro's UCN5804B chips for step/dir control,
TurboCNC from DAK engineering for the Gcode to Step/dir translator,
DeskProto for STL to GCODE translator and
Solidworks for design.

If anyone need some help...

Gelandangan."

I have searched in google, i have read basically every message up here and also the EmcoF1Mill group.
But i couldn't find any good explanation of how to do this.

It seems that it's possible to actually use the Emco stepdriver board and the original drivers.
Then you just hook up the machine to your pc and use it with Mach3 or whatever and use it like that.

Is there anyone that knows how it works or can be done?

I've already ordered 3 of those chips on ebay, since they're very cheap.
I wasn't sure whether i needed 1 chip per axis, or one chip per machine.

I hope one of you guys can help me out!

Thanks a lot in advance!

Peter Keizer.

(I'll be posting this same question in the EmcoF1Mill group.
If we can figure out how it works, i'll make a nice tutorial of it so others can do it as well.)

Re: DC motor

wild_kow
 

It can only be the brushes which are worn or one of the windings has gone 'open'. Brushes can be modified to fit if originals are not available and the motor can be rewound - although this may be expensive - and the commutator re-machined. Brushes may be available from the motor manufacturer or at least the specifications. There are small motor rewinding companies, at least in the UK. If the brushes have been allowed to wear below the Emco stated minimum, this may welll be the problem.

Having the motor rebuilt would get over the problem of not being able to use a secondhand one.

How do you know it is the motor and not the powersupply / controller board?

John
________________________________________
From: Emco_cnc_users@... [Emco_cnc_users@...] On Behalf Of belgyseppe [belgyseppe@...]
Sent: Thursday, January 03, 2013 11:41 AM
To: Emco_cnc_users@...
Subject: [Emco_cnc_users] Re: DC motor

Because the engine is broke, and I can't find the axact same motor in Belgium. And we are not allowed to do the chance with a second handed motor. but thanks

--- In Emco_cnc_users@...<mailto:Emco_cnc_users%40yahoogroups.com>, Marty Escarcega wrote:

Its a 90vdc .5hp motor. Why do you want to change it? Its a good motor. DC
controllers are readily available and would give you variable speed.
Marty

Re: DC motor

Brian Smith <shopdweller1@...>
 

Yes but don't have the RPM's of the original 4000 + & may need to make a flange to mount it. . I put new bearings in mine and it is very smooth & consistant RPM's.

Brian


 

Both 90VDC and 180VDC motors are fairly common in the US from companies such as WW Grainger.

 

gary

 


From: Emco_cnc_users@... [mailto:Emco_cnc_users@...] On Behalf Of mustgofast2002
Sent: Thursday, January 03, 2013 10:39 AM
To: Emco_cnc_users@...
Subject: [Emco_cnc_users] Re: DC motor

 

 

Hi

In Europe the motor voltage will be 180vDC when using a 230v AC supply,
Marty refers to 110/120v supply as in USA where the 90vDC motor is used.

--- In Emco_cnc_users@..., Marty Escarcega wrote:
>
> Its a 90vdc .5hp motor. Why do you want to change it? Its a good motor. DC
> controllers are readily available and would give you variable speed.
> Marty
>

Re: DC motor

nitewatchman5
 

Both 90VDC and 180VDC motors are fairly common in the US from companies such as WW Grainger.

 

gary

 


From: Emco_cnc_users@... [mailto:Emco_cnc_users@...] On Behalf Of mustgofast2002
Sent: Thursday, January 03, 2013 10:39 AM
To: Emco_cnc_users@...
Subject: [Emco_cnc_users] Re: DC motor

 

 

Hi

In Europe the motor voltage will be 180vDC when using a 230v AC supply,
Marty refers to 110/120v supply as in USA where the 90vDC motor is used.

--- In Emco_cnc_users@..., Marty Escarcega wrote:
>
> Its a 90vdc .5hp motor. Why do you want to change it? Its a good motor. DC
> controllers are readily available and would give you variable speed.
> Marty
>

Re: DC motor

mustgofast2002 <m.wg@...>
 

Hi

In Europe the motor voltage will be 180vDC when using a 230v AC supply,
Marty refers to 110/120v supply as in USA where the 90vDC motor is used.

--- In Emco_cnc_users@..., Marty Escarcega wrote:

Its a 90vdc .5hp motor. Why do you want to change it? Its a good motor. DC
controllers are readily available and would give you variable speed.
Marty

Re: Welturn Software

postema_indian
 

Hi Adam and David,

Finally I got it on the users site. The program from welturn for running your machine with the computer. My name will be in the screen when running the program but there's a textfile with my name in it. When you change that in your name, your name will be on the screen in stead of mine.

good luck with it.


--- On Thu, 1/3/13, adan333 wrote:

From: adan333
Subject: [Emco_cnc_users] Re: Welturn Software
To: Emco_cnc_users@...
Date: Thursday, January 3, 2013, 3:52 AM

 

I think a few of us are in the same boat. I would like to get a copy as well. I did receive a floppy disk with my lathe. but up till now i dont have the ability to read a floppy drive.
thanks
adam

--- In Emco_cnc_users@..., "iain" wrote:
>
> I have the original welturn software on hard drive but old laptop only has floppy drive so im not sure i can get it off.
>
> Id also appreciate a copy of latest welturn, I have asked welsoft about getting it through them but they have stopped even replying to emails now.
>
>
>
> --- In Emco_cnc_users@..., "nz_dgraham" wrote:
> >
> > Hi Henk-Jan
> > I take it that it is to big to just email to me. If possible, would you be able to upload it to a file sharing site, so that i can download it of that, such as rapidshare.
> >
> > Thank you,
> > David Graham
> >
> > --- In Emco_cnc_users@..., henk-jan postema wrote:
> > >
> > > Hi David,
> > >  
> > > I'm a user of the welturn and welmill software and it seems to work ok. I do have the compact 5 pc. The software-cd includes the program for the compact 5 pc and compact 5 cnc. The only thing that I don't know is how everything works with the toolchanger cause the 5 pc doesn't have one. I can provide you the software but have to figure out how I can deliver it to you.
> > >  
> > > see you Henk-Jan.
> > >
> > > --- On Thu, 5/17/12, nz_dgraham wrote:
> > >
> > >
> > > From: nz_dgraham
> > > Subject: [Emco_cnc_users] Welturn Software
> > > To: Emco_cnc_users@...
> > > Date: Thursday, May 17, 2012, 1:06 PM
> > >
> > >
> > >
> > >  
> > >
> > >
> > >
> > > Hi everyone.
> > >
> > > Does anyone have a copy of the Welturn software that they could email to me, as it seems that i have lost the software, however I have the upgrade card so I need to software to run the lathe.
> > > I have tried emailing Welsoft, but have yet to get a reply.
> > >
> > > Thanks,
> > > David
> > >
> >
>

New file uploaded to Emco_cnc_users

Emco_cnc_users@...
 

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the Emco_cnc_users
group.

File : /Autorun.inf
Uploaded by : postema_indian <postema_indian@...>
Description : welturn part 2

You can access this file at the URL:
http://groups.yahoo.com/group/Emco_cnc_users/files/Autorun.inf

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/l/us/yahoo/groups/original/members/web/index.html
Regards,

postema_indian <postema_indian@...>

Re: DC motor

belgyseppe <belgyseppe@...>
 

Because the engine is broke, and I can't find the axact same motor in Belgium. And we are not allowed to do the chance with a second handed motor. but thanks

--- In Emco_cnc_users@..., Marty Escarcega wrote:

Its a 90vdc .5hp motor. Why do you want to change it? Its a good motor. DC
controllers are readily available and would give you variable speed.
Marty

Re: DC motor

marty_in_mesa
 

Its a 90vdc .5hp motor. Why do you want to change it? Its a good motor. DC controllers are readily available and would give you variable speed.
Marty

Re: Welturn Software

adan333
 

I think a few of us are in the same boat. I would like to get a copy as well. I did receive a floppy disk with my lathe. but up till now i dont have the ability to read a floppy drive.
thanks
adam

--- In Emco_cnc_users@..., "iain" <still_cool40@...> wrote:

I have the original welturn software on hard drive but old laptop only has floppy drive so im not sure i can get it off.

Id also appreciate a copy of latest welturn, I have asked welsoft about getting it through them but they have stopped even replying to emails now.



--- In Emco_cnc_users@..., "nz_dgraham" <nz.dgraham@> wrote:

Hi Henk-Jan
I take it that it is to big to just email to me. If possible, would you be able to upload it to a file sharing site, so that i can download it of that, such as rapidshare.

Thank you,
David Graham

--- In Emco_cnc_users@..., henk-jan postema <postema_indian@> wrote:

Hi David,
 
I'm a user of the welturn and welmill software and it seems to work ok. I do have the compact 5 pc. The software-cd includes the program for the compact 5 pc and compact 5 cnc. The only thing that I don't know is how everything works with the toolchanger cause the 5 pc doesn't have one. I can provide you the software but have to figure out how I can deliver it to you.
 
see you Henk-Jan.

--- On Thu, 5/17/12, nz_dgraham <nz.dgraham@> wrote:


From: nz_dgraham <nz.dgraham@>
Subject: [Emco_cnc_users] Welturn Software
To: Emco_cnc_users@...
Date: Thursday, May 17, 2012, 1:06 PM



 



Hi everyone.

Does anyone have a copy of the Welturn software that they could email to me, as it seems that i have lost the software, however I have the upgrade card so I need to software to run the lathe.
I have tried emailing Welsoft, but have yet to get a reply.

Thanks,
David

DC motor

belgyseppe <belgyseppe@...>
 

hello, I need to find the data sheet of an DC motor of the emco compact 5 cnc for my school. And if it's not to difficult I need to replace it with an other motor, but I don't know witch motor. I would be very grateful if someone could help me
thank you

Re: newbie

Mike Sharp
 

> My bad, the circuit installed is a welturn. if anyone has the software or
> knows a software that will work with these please let me know.

I think someone on the "The Chaski Home Machinist Site" mentioned having a working welturn system.
http://www.chaski.org/homemachinist/

  --Mike

Re: newbie

adan333
 

My bad, the circuit installed is a welturn. if anyone has the software or knows a software that will work with these please let me know.
thanks

--- In Emco_cnc_users@..., "adan333" <adan333@...> wrote:

After much wire chasing and probing i found the issue with no motor or turret movement. the system was upgraded to serial control, and in doing so they cut out the link between the cpu and the motors. Easy enough to fix but since i wanted pc control i will leave it as is. I just now need to get some cnc software installed on a laptop and begin playing with the software. thanks again guys for the schematics and the insight. Any advice on what software i can now use? the upgrade was to an emco serial port. does mach3 support this?


--- In Emco_cnc_users@..., "adan333" <adan333@> wrote:

thanks guys! i appreciate the insight. i will trouble shoot the existing board and will plan on upgrading if i cant get this one going. I also wanted to ask if anyone has looked into an auto chuck system? I havent seen anything like this so far. If anyone has done this or knows of one i would appreciate the information. and does mach3 support it? i want to be able to run some simple parts and be able to walk away and maybe get a dozen or so made.
thanks
adam


--- In Emco_cnc_users@..., "markotime" <markotime@> wrote:

and for a lot fewer dollars and a little more work, two Gecko single axis units can be used in place of the G540.

When choosing stepper motors, I used round ones only because the
heat sinks from the originals provide a neat way of managing the
cables to the motors. 120 oz-in motors will do, although 150-200
do provide some advantage.

Note that the motor pulleys usually have to be turned end for end
to make room for the thru-pin - most new motor shafts are just
slightly shorter than the ones on the originals.

You may be able to sell the originals for 100.00 or more, as well
as some of the electronics for die-hards looking for spares.

/mark


--- In Emco_cnc_users@..., "Dan Groot" <dan@> wrote:

Adam.I don't know what your budget is.Or the shape of the other electrical
parts on your machine.But if it was me, I got a gecko g540, some nema 23
mount steppers with dual shaft.( incase you want to go with encoders later,)
I got a link to the motors.)
Take off your old stepper pulleys.Put them on the new motors, get an old PC,
and a Free trial version of mach 3.
You would be set. Then you could put your time into learning how to make the
Mach 3,do what you want it to do( its the most common machine controller
software, or at least 1 of them.) .I never have used the old electronics at
all. A lot of guys go with the Cheaper boards, and have had good luck., I
never did, and 2 boards and some madjic smoke later, and a lot of
frustration, I got the g540's.,Let me know if you want the link to the
motors and some more info.
Do you have the DC motor? KB electronics has a DC motor controller that
will take input from the g540 and give you spindle speed control.-----
Original Message -----
From: "adan333" <adan333@>
To: <Emco_cnc_users@...>
Sent: Saturday, December 29, 2012 7:35 PM
Subject: [Emco_cnc_users] newbie


Hi Everyone,
I just recieved my partially functioning compact 5 cnc with tool turret.
So far the spindle works as well as the speed controller. the motors dont
move in manual mode. not sure if this is a fuse issue. the turret doesnt
turn either, but when i turn it on the turrent does this movement like its
trying to find its start point. I'm thinking its the manual control board
that is not taking inputs. Has anyone had similar problems? maybe point me
in the right direction? i have downloaded the schematic but there is alot
to try and trouble shoot.
thanks
Adam



------------------------------------

Yahoo! Groups Links



Re: newbie

adan333
 

After much wire chasing and probing i found the issue with no motor or turret movement. the system was upgraded to serial control, and in doing so they cut out the link between the cpu and the motors. Easy enough to fix but since i wanted pc control i will leave it as is. I just now need to get some cnc software installed on a laptop and begin playing with the software. thanks again guys for the schematics and the insight. Any advice on what software i can now use? the upgrade was to an emco serial port. does mach3 support this?

--- In Emco_cnc_users@..., "adan333" <adan333@...> wrote:

thanks guys! i appreciate the insight. i will trouble shoot the existing board and will plan on upgrading if i cant get this one going. I also wanted to ask if anyone has looked into an auto chuck system? I havent seen anything like this so far. If anyone has done this or knows of one i would appreciate the information. and does mach3 support it? i want to be able to run some simple parts and be able to walk away and maybe get a dozen or so made.
thanks
adam


--- In Emco_cnc_users@..., "markotime" <markotime@> wrote:

and for a lot fewer dollars and a little more work, two Gecko single axis units can be used in place of the G540.

When choosing stepper motors, I used round ones only because the
heat sinks from the originals provide a neat way of managing the
cables to the motors. 120 oz-in motors will do, although 150-200
do provide some advantage.

Note that the motor pulleys usually have to be turned end for end
to make room for the thru-pin - most new motor shafts are just
slightly shorter than the ones on the originals.

You may be able to sell the originals for 100.00 or more, as well
as some of the electronics for die-hards looking for spares.

/mark


--- In Emco_cnc_users@..., "Dan Groot" <dan@> wrote:

Adam.I don't know what your budget is.Or the shape of the other electrical
parts on your machine.But if it was me, I got a gecko g540, some nema 23
mount steppers with dual shaft.( incase you want to go with encoders later,)
I got a link to the motors.)
Take off your old stepper pulleys.Put them on the new motors, get an old PC,
and a Free trial version of mach 3.
You would be set. Then you could put your time into learning how to make the
Mach 3,do what you want it to do( its the most common machine controller
software, or at least 1 of them.) .I never have used the old electronics at
all. A lot of guys go with the Cheaper boards, and have had good luck., I
never did, and 2 boards and some madjic smoke later, and a lot of
frustration, I got the g540's.,Let me know if you want the link to the
motors and some more info.
Do you have the DC motor? KB electronics has a DC motor controller that
will take input from the g540 and give you spindle speed control.-----
Original Message -----
From: "adan333" <adan333@>
To: <Emco_cnc_users@...>
Sent: Saturday, December 29, 2012 7:35 PM
Subject: [Emco_cnc_users] newbie


Hi Everyone,
I just recieved my partially functioning compact 5 cnc with tool turret.
So far the spindle works as well as the speed controller. the motors dont
move in manual mode. not sure if this is a fuse issue. the turret doesnt
turn either, but when i turn it on the turrent does this movement like its
trying to find its start point. I'm thinking its the manual control board
that is not taking inputs. Has anyone had similar problems? maybe point me
in the right direction? i have downloaded the schematic but there is alot
to try and trouble shoot.
thanks
Adam



------------------------------------

Yahoo! Groups Links



Re: correct fuse, motor for turret.

Mike Sharp
 

Just to follow up on my original question...

> I've got a blown fuse on the board that drives the turret.
>
> Its marked 14A/25UD. It appears to be a miniature ceramic fuse.
>
> Is this really a 25V (note: NOT 250V) 14A fuse?

No, it isn't a 14A fuse.  The manufacturer had a bad day on the stamping machine.
Its a T4A/250D, but on my blown fuse the top of the 'T' and the '0' didn't stamp properly.

I don't have a working turret yet (still waiting on the replacement motor) so I don't have any proven method of running it yet.  M06 is suppose to do it though.

  --Mike



Re: correct fuse, motor for turret.

zburhop
 

Anyone know where I can find out how to run the turret?? I am using MFI and can find no references as to how to make the turret rotate with g code.
Thanks,
Zach burhop
zburhop (at)gmail.com

--- In Emco_cnc_users@..., Mike Sharp <Mike_Sharp@...> wrote:


I've got a blown fuse on the board that drives the turret.

Its marked 14A/25UD. It appears to be a miniature ceramic fuse.

Is this really a 25V (note: NOT 250V) 14A fuse? Does anyone know of a
supplier? None of the usual makers (Littlefuse etc) seems to make an equivalent
part.
Digikey does offer some 32V fuses.


As for my earlier question on the approximate RPM of the turret motor...
After watching a video of another turret in operation, and from inspection of
the turret I've got, it appears as if the gearhead motor needs to run at
somewhere in the neighborhood of 200rpm.

Once I can verify that the driver board works (fuse needed as above) I'll see
what motor I can find that will fill my need. $20 for a surplus motor and an
hour or two of machining to making it fit is a lot better than the $600+
recently asked on ebay for a new turret!

--Mike

EMCO PC55 AUTO TOOL CHANGER / TURRENT!

oracle_poet <oracle_poet@...>
 

EMCO PC55 AUTO TOOL CHANGER / TURRENT!. Like new! Will also mount on CNC 5 and PC5.

500 plus 14.95 USPS Priority Mail shipping within lower 48 states.

Re: newbie

adan333
 

thanks guys! i appreciate the insight. i will trouble shoot the existing board and will plan on upgrading if i cant get this one going. I also wanted to ask if anyone has looked into an auto chuck system? I havent seen anything like this so far. If anyone has done this or knows of one i would appreciate the information. and does mach3 support it? i want to be able to run some simple parts and be able to walk away and maybe get a dozen or so made.
thanks
adam

--- In Emco_cnc_users@..., "markotime" <markotime@...> wrote:

and for a lot fewer dollars and a little more work, two Gecko single axis units can be used in place of the G540.

When choosing stepper motors, I used round ones only because the
heat sinks from the originals provide a neat way of managing the
cables to the motors. 120 oz-in motors will do, although 150-200
do provide some advantage.

Note that the motor pulleys usually have to be turned end for end
to make room for the thru-pin - most new motor shafts are just
slightly shorter than the ones on the originals.

You may be able to sell the originals for 100.00 or more, as well
as some of the electronics for die-hards looking for spares.

/mark


--- In Emco_cnc_users@..., "Dan Groot" <dan@> wrote:

Adam.I don't know what your budget is.Or the shape of the other electrical
parts on your machine.But if it was me, I got a gecko g540, some nema 23
mount steppers with dual shaft.( incase you want to go with encoders later,)
I got a link to the motors.)
Take off your old stepper pulleys.Put them on the new motors, get an old PC,
and a Free trial version of mach 3.
You would be set. Then you could put your time into learning how to make the
Mach 3,do what you want it to do( its the most common machine controller
software, or at least 1 of them.) .I never have used the old electronics at
all. A lot of guys go with the Cheaper boards, and have had good luck., I
never did, and 2 boards and some madjic smoke later, and a lot of
frustration, I got the g540's.,Let me know if you want the link to the
motors and some more info.
Do you have the DC motor? KB electronics has a DC motor controller that
will take input from the g540 and give you spindle speed control.-----
Original Message -----
From: "adan333" <adan333@>
To: <Emco_cnc_users@...>
Sent: Saturday, December 29, 2012 7:35 PM
Subject: [Emco_cnc_users] newbie


Hi Everyone,
I just recieved my partially functioning compact 5 cnc with tool turret.
So far the spindle works as well as the speed controller. the motors dont
move in manual mode. not sure if this is a fuse issue. the turret doesnt
turn either, but when i turn it on the turrent does this movement like its
trying to find its start point. I'm thinking its the manual control board
that is not taking inputs. Has anyone had similar problems? maybe point me
in the right direction? i have downloaded the schematic but there is alot
to try and trouble shoot.
thanks
Adam



------------------------------------

Yahoo! Groups Links



Re: newbie

Dan Groot <dan@...>
 

Ya, I like the jb weld method for securing the pulleys on the new motors, That's what I used the last time.Just heat them and the pulley comes back off.I chose some kiling dual shaft, I will be changing them out and adding the encoders this week if I get time.There cheap. only a dollar or two over the single shafts.Less that 5 volts.Might even be 3.5. I'd have to dig up the specs to be sure.Which is what the guy I got the gecko's from recommended.

----- Original Message -----
From: "markotime" <markotime@...>
To: <Emco_cnc_users@...>
Sent: Sunday, December 30, 2012 10:32 AM
Subject: [Emco_cnc_users] Re: newbie


and for a lot fewer dollars and a little more work, two Gecko single axis units can be used in place of the G540.

When choosing stepper motors, I used round ones only because the
heat sinks from the originals provide a neat way of managing the
cables to the motors. 120 oz-in motors will do, although 150-200
do provide some advantage.

Note that the motor pulleys usually have to be turned end for end
to make room for the thru-pin - most new motor shafts are just
slightly shorter than the ones on the originals.

You may be able to sell the originals for 100.00 or more, as well
as some of the electronics for die-hards looking for spares.

/mark


--- In Emco_cnc_users@..., "Dan Groot" <dan@...> wrote:

Adam.I don't know what your budget is.Or the shape of the other electrical
parts on your machine.But if it was me, I got a gecko g540, some nema 23
mount steppers with dual shaft.( incase you want to go with encoders later,)
I got a link to the motors.)
Take off your old stepper pulleys.Put them on the new motors, get an old PC,
and a Free trial version of mach 3.
You would be set. Then you could put your time into learning how to make the
Mach 3,do what you want it to do( its the most common machine controller
software, or at least 1 of them.) .I never have used the old electronics at
all. A lot of guys go with the Cheaper boards, and have had good luck., I
never did, and 2 boards and some madjic smoke later, and a lot of
frustration, I got the g540's.,Let me know if you want the link to the
motors and some more info.
Do you have the DC motor? KB electronics has a DC motor controller that
will take input from the g540 and give you spindle speed control.-----
Original Message -----
From: "adan333" <adan333@...>
To: <Emco_cnc_users@...>
Sent: Saturday, December 29, 2012 7:35 PM
Subject: [Emco_cnc_users] newbie


Hi Everyone,
I just recieved my partially functioning compact 5 cnc with tool turret.
So far the spindle works as well as the speed controller. the motors dont
move in manual mode. not sure if this is a fuse issue. the turret doesnt
turn either, but when i turn it on the turrent does this movement like its
trying to find its start point. I'm thinking its the manual control board
that is not taking inputs. Has anyone had similar problems? maybe point me
in the right direction? i have downloaded the schematic but there is alot
to try and trouble shoot.
thanks
Adam



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