MK1 Steel router build log 1500x800x200

[Clive S]

Bert Did you check out the rapidonline list I sent you for the power supply. post #95

[driftspin]

Bert Did you check out the rapidonline list I sent you for the power supply. post #95

Hi Clive S,
Uh farnell vs Rapid online.... that was a quick 50% price drop...
Thanks, you just earned some beers :-)


Just checked the mains voltage
Now it is not ~225volts


It is 235.4 volts on fluke 87 V.
Oopsie +10 volts, so 24 or 25 volt secondary still?



Theory : uh was it like ....
(25+25)*sqrt 2 / 230v*235v?? = 72,2 volts
(24+24)*sqrt 2 / 230v*235v?? = 69.4 volts
Goal : 68volts DC

Well, rectifier steals maybe 1 volt (Vf =1.1 volt) ?

Can you please confirm? 24+24 is harder to find.



Post #95 The links are shorted and messed up somehow,
hard to handle on smart phone icw google, so on a pc now:

I had google find me the bom list you suggest.

-DC Components KBPC5006 Bridge Rectifier 50A 600V.

OK 50Amps@600volts :-) Nice

1*
-Vigortronix VTX-146-500-225 500VA Toroidal Transformer 2x115V Primary 2 x 25V
OK, uh dual primairy? 2 series 115volts=230 volts?

Do i want single 230v or dual 115v primairy, and why is that?

3*
- LCR EP0882-P 35mm Nylon Capacitor Mounting Clamp
OK


3*
- Jianghai ECS2ABZ472MT6P23550 4700uF 100V Snap-in Alum. Elect. Cap. 85° 4khrs
OK




Thanks again for this Clive S.


Grtz Bert.

[Clive S]

Theory : uh was it like ....
(25+25)*sqrt 2 / 230v*235v?? = 72,2 volts
(24+24)*sqrt 2 / 230v*235v?? = 69.4 volts
Goal : 68volts DC

Well, rectifier steals maybe 1 volt (Vf =1.1 volt) ?

Can you please confirm? 24+24 is harder to find.

Ok I am not a math person but I think you might be doing this the wrong way.

25-25 = 50 x 1.414 = 70.07 - rectifier 2 x 1.1 v = 68.5v

Single or double primary no difference, dual primary are easier to find. You won't have any trouble with 25-25 or 24-24 v sec.

Don't forget you are measuring V without load. You also said you have a 25Mtr run

Sorry about the links the forum shortened them.

[driftspin]

Ok I am not a math person but I think you might be doing this the wrong way.

25-25 = 50 x 1.414 = 70.07 - rectifier 2 x 1.1 v = 68.5v

Single or double primary no difference, dual primary are easier to find. You won't have any trouble with 25-25 or 24-24 v sec.

Don't forget you are measuring V without load. You also said you have a 25Mtr run

Sorry about the links the forum shortened them.

Hi Clive S ...

I was just compensating for the raised mains voltage 235 vs 230...

So what about the drives.
I understand leadshine does not manufacture am882 no more ? Where do those am882's come from then?
Good / bad clones?
Any reputable place to buy them ?

So... can one use the uc300 eth with gcode to control spindle speed over 0-10v from the ub1 ?

Is uc software licence bound to the motioncontroller or to the pc hardware?


Grtz Bert.



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[Clive S]

Bert I have had to much sauce tonight to be of any use. But there are plenty of drives to go for have you seen these:-
https://www.ebay.co.uk/itm/2DM860H-2...72.m2749.l2649

and then you have the AM806 drives

[driftspin]

Bert I have had to much sauce tonight to be of any use. But there are plenty of drives to go for have you seen these:-
https://www.ebay.co.uk/itm/2DM860H-2...72.m2749.l2649

and then you have the AM806 drives

Yes, Nr1madman has the same steppers from cnc4you as i.

And he actually bought those.
Do those have stall protection? I also have the dual X setup.


I know the am882 is tested and proven, so the safe route.

I have no preference yet. Did not do enough research yet. Guess i settled for the am882.

Grtz. Bert.

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[Nr1madman]

Yes, Nr1madman has the same steppers from cnc4you as i.

And he actually bought those.
Do those have stall protection? I also have the dual X setup.


I know the am882 is tested and proven, so the safe route.

I have no preference yet. Did not do enough research yet. Guess i settled for the am882.

Grtz. Bert.

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:D

I don't think they have stalldetect.
And I don't think stalldetect is as safe as everyone says ;)

The 2dm860 seems to have had an upgrade. The one that is linked to have a different cover than mine and seem to have more dip switches than mine with functions that I can only change with software (and cable)

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