dyna 3000 lathe to linux

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10 Sep 2014 22:29 #51036 by shoot2014
Replied by shoot2014 on topic dyna 3000 lathe to linux
theres a lad going to help me set all this up when ive got as far as I can go
.hes also the one who suggested i go the Linux route..which im sticking with
im a little out of my depth,at this point,..do you think I should go with the pmdx 107 spindle speed board I also have?i did dismiss using it in favour for that drive.

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10 Sep 2014 22:42 #51037 by andypugh
Replied by andypugh on topic dyna 3000 lathe to linux

do you think I should go with the pmdx 107 spindle speed board I also have?i did dismiss using it in favour for that drive.


It's hard to say...

Can you list the hardware that you currently have, including the original stuff from the lathe?

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10 Sep 2014 23:12 #51038 by shoot2014
Replied by shoot2014 on topic dyna 3000 lathe to linux
the spindle was powered by a big 240v to 110v transformer that's still on there.these are fitted in the back as standard
see image I still have things like spindle motor with its tach and brake the heds encoder the slotted sensor on the spindle and the turret board with its sensors
everything else has gone


second image you see a pair of 24v supplys and 1 x 5v


the parts I have so far are below
3 nema 23's 2 for axis's one for turret.
3 drivers- DQ860MA 80V 7.8A( I realise an 80v driver is excessive for the turret and will most likely change that)
70v toroidal power supply
pmdx 126 break out board and the 107 spindle speed board that plugs into it..
the dgs4 dc servo drive. and a braking circuit.

Attachments:

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10 Sep 2014 23:21 #51039 by ArcEye
Replied by ArcEye on topic dyna 3000 lathe to linux
Hi

Looking at the macro, all it does is turn a stepper defined as Axis A, forward by x amount and then back by y amount, presumably to lock against a pawl.
There is nothing in there about a solenoid or sensors.

As it stands, the nearest toolchanger is the one for the Boxford.
wiki.linuxcnc.org/cgi-bin/wiki.pl?Contri...oolchanger_component

However if you have a locking solenoid and positioning sensors, those need to be factored in.

Need to know what inputs and outputs you have.

regards
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10 Sep 2014 23:44 - 11 Sep 2014 00:00 #51040 by shoot2014
Replied by shoot2014 on topic dyna 3000 lathe to linux
thanks ArcEye this is the chap that kindly give me the macro and is using it here

im overwhelmed with the help on this forum.
ive been trying to upload a jpeg with the complete wiring info to this lathe but it wont let us.
I get a new pc plus a second parallel port card next day or two
Last edit: 11 Sep 2014 00:00 by shoot2014.

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11 Sep 2014 00:05 #51041 by andypugh
Replied by andypugh on topic dyna 3000 lathe to linux

I get a new pc plus a second parallel port card ether today or tomorrow.


I wouldn't go for a second parallel port. Look instead at the Mesa 5i25. That can drive both sets of inputs to the PMDX board. The advantage there is that it can generate far faster, smoother pulses than the parallel port. It can also count encoders many times faster, and that might matter.
eusurplus.com/index.php?route=product/pr...ue&sub_category=true
It's a bit more expensive than a parallel port, but it does a whole lot more.

Normally I would suggest the matching 7i76 board as the breakout, but you already have the PMDX board, and that ought to work (albeit with less total IO)
eusurplus.com/index.php?route=product/pr...ue&sub_category=true

I have met the PMDX guys at a LinuxCNC meetup and it is possible that they might have advice on LinuxCNC setup.

Do _not_ buy a Smoothstepper, that won't work with LinuxCNC.
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11 Sep 2014 00:09 #51042 by andypugh
Replied by andypugh on topic dyna 3000 lathe to linux
The lathe in that video looks painfully slow. I don't know if he has just been very conservative with the settings or if there is another limit being hit.

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11 Sep 2014 15:18 #51063 by shoot2014
Replied by shoot2014 on topic dyna 3000 lathe to linux
thanks andy
you've given me a lot to think about,i hadn't heard of these mesa boards until yesterday..
need to chew on this for a bit ;)

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11 Sep 2014 17:23 #51069 by ArcEye
Replied by ArcEye on topic dyna 3000 lathe to linux

ive been trying to upload a jpeg with the complete wiring info to this lathe but it wont let us.


There are size limits on images and jpgs are often quite large

Try putting the image in a zip, the image won't compress much but the .zip extention is often accepted for larger files

regards

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11 Sep 2014 19:39 - 11 Sep 2014 19:41 #51075 by andypugh
Replied by andypugh on topic dyna 3000 lathe to linux
A single parport is just about enough for a lathe, so I would suggest wiring things up and getting things moving with just the parport and PMDX 126.

Cross-referencing the PMDX and Gecko G540 pinouts (because the 5i25 is available with a firmware that matches the G540 pin arrangement)

P-port pinG540PMDX 126
1OUTPUT 2Relay
2X-AXIS STEPOutput
3X-AXIS DIRECTIONOutput
4Y-AXIS STEPOutput
5Y-AXIS DIRECTIONOutput
6Z-AXIS STEPOutput
7Z-AXIS DIRECTIONOutput
8A-AXIS STEPOutput
9A-AXIS DIRECTIONOutput
10INPUT 1E-stop Input
11INPUT 2J12 Input
12INPUT 3J12 Input
13INPUT 4J12 Input
14VFD PWM (50 Hz)Relay
15FAULT (input to PC)J12 Input
16CHARGE PUMP (]10 kHz)J6 Output
17OUTPUT 1J6 Output
18GNDGND
19GNDGND
20GNDGND
21GNDGND
22GNDGND
23GNDGND
24GNDGND
25GNDGND

So you can use the G540 pin allocations with the PMDX with no problems, and then if you later decide on the 5i25 you can use the G540 firmware without having to make any wiring changes.
(In fact you can keep two separate configs, one for parport and one for 5i25)
Last edit: 11 Sep 2014 19:41 by andypugh.

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