Date   
Re: compact 5: advance motor "humming"

fredoavelo
 

hi
maybe you can buy a cheap XPROTOLAB it's a very small osciloscope 200kHz bandwith, 5 volt power needed and 20V max input voltage for nearly 40 buks but enougth for this job i think

Re: compact 5: advance motor "humming"

bastiensphoto@...
 

I do not have access to an oscilloscope ... i have used them a lot, but dont have one (im looking for a decent used one ...)
i have not verified the consistency between channels
i know have access to a working stepper the time of my repair which should make my work a lot easier :)

Re: spare parts

Croonen
 

for emergency stop switch you can put in from every other brand name, the key for to switch the motor auto are manual I have I think 2 pieces.

greetings Benny

Re: spare parts

Toschr <Toschr@...>
 

I have some of these parts if you are still looking

 

 

Robert T. Tosch CMfgE

CNC CAD/CAM Instructor
Alpena Community College
(989) 358-7421

 

From: Emco_cnc_users@... [mailto:Emco_cnc_users@...] On Behalf Of gregory.busick@...
Sent: Tuesday, May 06, 2014 10:19 PM
To: Emco_cnc_users@...
Subject: [Emco_cnc_users] spare parts

 

 

I recently purchased a used Emco Compact 5 CNC Lathe. It is missing the following items:

Keys for lathe motor and main unit.

Emergency stop switch

Tail stock

Can anyone provide these?  Thank you.

 

Best regards, Greg

Re: compact 5: advance motor "humming"

cncwannabe
 

Have you verified consistency between channels at the outputs of the opto's?  If so, do you have access to an oscilloscope?

Re: compact 5: advance motor "humming"

bastiensphoto@...
 

X34 and X35 match ...
it seem like i get matching signal on the entire board ... could a capacitor be bad?
if so, how can i identify it?

thanks cncwanabe for your idea of testing X34 and X35
i worked on the board from top to bottom, now i need to restart and work from bottom to top ...

Re: compact 5: advance motor "humming"

cncwannabe
 

You could try to produce a schematic by following the pcb traces to refine your troubleshooting.  Posting it would generate suggestions as to where to look.

You could also take advantage of the fact that you have a working axis with identical circuitry.  Start at the input connectors X34 and X35 and compare signals while moving each axis one step at a time.  Monitoring with a scope or logic analyzer would be ideal but it could be done with a DMM.  It is possible that the problem is on the computer board.  Matching the X34 and X35 signals give you immediate direction.

Matching signals on the connectors would tell you the problem is on the Step Motor Board.  Trace the signals to the next device.  There may be a wrinkle because the chips are multi gate devices and connections may not match between channels.  You should search for the part data sheets to understand the connection differences between axes (if any).  The data sheets will show you the chip outputs you need to look at for the next stage comparison.

Move forward through the chips until the signals don't match.  You may want to start testing with the power plug at X33 disconnected.  The front end circuitry gets its power from X34 and X35 and motor power isn't needed until you get past the opto's and into the transistor circuits.

Good luck,

Walt






spare parts

 

I recently purchased a used Emco Compact 5 CNC Lathe. It is missing the following items:

Keys for lathe motor and main unit.

Emergency stop switch

Tail stock

Can anyone provide these?  Thank you.


Best regards, Greg

Re: compact 5: advance motor "humming"

bastiensphoto@...
 

I just replace all the transistor on the board, still the same problem ...
i tried a compact 5 PC stepper board (from a friend) and it work grate ...

anyone hva any idea on what i could try?

Re: VFD for Emco Compact 5

Croonen
 

so posibilty you have not only burn the potmeter but some other things maybe you have make a short circuit, whit to place the pcb board on something metal are something that give a conection you have to understand that there is still the main power on the board and whit a small connection you burn a lot of components.
you if you milling board still work I would let sit it in the machine, do you have some friend that can reapir elektronics you have the schematics and he can repair the board.
are a older person that have repair Radio are TV, he can fix you the board 
Benny


2014-04-29 20:06 GMT+02:00 Benny Croonen <plasmaboog@...>:

 

Hello Nikolay

the spindel board elektronic is the samen for a turning machine you have the rpm meter on it.
But I can repair the board if you wont.

greetings Benny


2014-04-29 18:59 GMT+02:00 <nikos_zou@...>:
 
[Attachment(s) from nikos_zou@... included below]

Hello Benny, 

unfortunately my spindle pcb doesn't work any more.....I did something and burned the potentiometer....I change it with a new one but...it refuses to work...although there is nothing black on it. Have you ever faced something like this?? The good news is that I have an emco mill and I will aply what you told me there. 

I understood what I have to to with the 7808 and the resistance....but could you please tell me if I can do the same with the mill spindle pcb board??? 

Would it be posible to use the mill pcb board to the lathe???
Do you have any suggestions with what to replace the lathe spindle pcb board??

Thank you very much for your time and help...!!!!!!!




Re: VFD for Emco Compact 5 [2 Attachments]

Croonen
 

Hello Nikolay

the spindel board elektronic is the samen for a turning machine you have the rpm meter on it.
But I can repair the board if you wont.

greetings Benny


2014-04-29 18:59 GMT+02:00 <nikos_zou@...>:

 
[Attachment(s) from nikos_zou@... included below]

Hello Benny, 

unfortunately my spindle pcb doesn't work any more.....I did something and burned the potentiometer....I change it with a new one but...it refuses to work...although there is nothing black on it. Have you ever faced something like this?? The good news is that I have an emco mill and I will aply what you told me there. 

I understood what I have to to with the 7808 and the resistance....but could you please tell me if I can do the same with the mill spindle pcb board??? 

Would it be posible to use the mill pcb board to the lathe???
Do you have any suggestions with what to replace the lathe spindle pcb board??

Thank you very much for your time and help...!!!!!!!



Re: VFD for Emco Compact 5 [1 Attachment]

nikos_zou@...
 

Hello Benny, 
unfortunately my spindle pcb doesn't work any more.....I did something and burned the potentiometer....I change it with a new one but...it refuses to work...although there is nothing black on it. Have you ever faced something like this?? The good news is that I have an emco mill and I will aply what you told me there. 

I understood what I have to to with the 7808 and the resistance....but could you please tell me if I can do the same with the mill spindle pcb board??? 

Would it be posible to use the mill pcb board to the lathe???
Do you have any suggestions with what to replace the lathe spindle pcb board??

Thank you very much for your time and help...!!!!!!!


Re: VFD for Emco Compact 5 [1 Attachment]

Croonen
 

I send you a photo you have to zoom it in to see the details.
you see in Red the work aria

I have write where the resistor sit from 27 k
look good how the 7808 sit one pin sit where the resitor was before.

look where you have to make a wire connection on the PCB

the middel pin of the 7808 this you have to make a wire connection to the - of the condesator.

if you have quistion ask if and make good photo.

Benny




2014-04-29 16:59 GMT+02:00 Benny Croonen <plasmaboog@...>:

Hello Nikos

it is the wrong place where that you have mark you are in the region.
But when the other machines com I wil make some photo of the modification But I gone look if I have a good photo of the spindelboard.

Greetings Benny


2014-04-29 12:22 GMT+02:00 <nikos_zou@...>:

 
[Attachment(s) from nikos_zou@... included below]

Hello Benny, How are you??

I received your pcb last week (great job!!) and now I try to make it work. I was wondering if you can help me with re replacement of the resistance. I have managed to find where the R71 is on the spindle board ( it is placed a little upper than the other components ) but i can't understand the connections on the board (with the c23 capasitor ). I send you a photo of the board. I would appreciate it if you could give me some advices. Do you angree that the R71 is the one that i have indicated???

Thank you in advance!!   



Re: VFD for Emco Compact 5 [1 Attachment]

Croonen
 

Hello Nikos

it is the wrong place where that you have mark you are in the region.
But when the other machines com I wil make some photo of the modification But I gone look if I have a good photo of the spindelboard.

Greetings Benny


2014-04-29 12:22 GMT+02:00 <nikos_zou@...>:

 
[Attachment(s) from nikos_zou@... included below]

Hello Benny, How are you??

I received your pcb last week (great job!!) and now I try to make it work. I was wondering if you can help me with re replacement of the resistance. I have managed to find where the R71 is on the spindle board ( it is placed a little upper than the other components ) but i can't understand the connections on the board (with the c23 capasitor ). I send you a photo of the board. I would appreciate it if you could give me some advices. Do you angree that the R71 is the one that i have indicated???

Thank you in advance!!   


Re: VFD for Emco Compact 5

nikos_zou@...
 

Hello Benny, How are you??
I received your pcb last week (great job!!) and now I try to make it work. I was wondering if you can help me with re replacement of the resistance. I have managed to find where the R71 is on the spindle board ( it is placed a little upper than the other components ) but i can't understand the connections on the board (with the c23 capasitor ). I send you a photo of the board. I would appreciate it if you could give me some advices. Do you angree that the R71 is the one that i have indicated???

Thank you in advance!!   

Re: EMCO compact 5 CNC lathe

corey@...
 

I have two 3rd gen (mk4) with turrets and monitors....I would sell one of them for the right price. I also have a mill/drill attachment that I would part with as well. I would imagine that shipping to the Netherlands would be expensive. Corey@....

EMCO compact 5 CNC lathe

2rn@...
 

Dear Members,


I am looking for a neat & clean EMCO compact 5 CNC lathe with original control unit.


Having already a EMCO F1 CNC mill, and a manual lathe machine, since I have a lot of applications that would be perfect for an EMCO compact 5 CNC lathe, and I love the original simple NC code programming, although I realise it is limited, I am looking for such a machine.


Anyone who wants to sell his machine or knows a friend who has one for sale, let me know.


I live in The Netherlands.


Thanks & best regards,

Richard

Compact 5 pc

brent48@...
 

Hi guys I've followed the instructions for modifying my pc 5 to work with mach 3. So far only getting the motors to warm but no movement. Anybody got any ideas? I see the software upgrade article by Jerry Gold refers to figure 4 but it does not show it.... could that be the problem. I'm even toying with the idea of trashing the entire guts and doing a complete rewire because to be honest this thing is frustrating the hell out of me. If anyone can help please contact me I would really appreciate any help I can get, I really want to get this thing going but I'm running out of ideas of what to do.


Thanks guys


Brent

Re: compact 5: advance motor "humming"

bastiensphoto@...
 

i just replace the db140, no change :(
i found a tip2955 that give me false reading, i will replace it and see, any other idea?

Re: VFD for Emco Compact 5

fredoavelo
 

hi all

be aware thats not +5V on the green wire but 1.1V if it is connected and 5V if disconnected.
There an 68 ohm resistor in series on the PCB to power the photointerrupter