Messages

31

General Mach Discussion / Re: Help / Advice on Power Supply for Series 1 Interact 1 Conversion

« on: February 07, 2012, 05:38:31 PM »

That was quick Hood.  I wasn't expecting anything until at least tomorrow!

The original transformer outputs 180V before rectification from a 415V supply. From my understanding the original drives (Bosch ZX15-1-240V) rectify and reduce the voltage to that required by the motors.

I had hoped to use the existing transformer, for testing at least. There are multiple input and output taps so I hoped to get a combination that would give a useable output voltage from a 240V input. What I am not sure of is the effect on the transformer of using a combination of input and output taps that are out of spec, so to speak.

Thanks
Alastair 

32

General Mach Discussion / Help / Advice on Power Supply for Series 1 Interact 1 Conversion

« on: February 07, 2012, 04:46:02 PM »

Having done some research what I am planning to do is:-
Keep the SEM servo motors replacing the encoders with AMT103 encoders from Digikey
Replace the servo drives with CNCDrive DG2S-16035, which I believe replaced the Dugong models
http://www.cncdrive.com/DG2S_16035.html

I am not sure what to do about powering the drives or exactly how large a power supply is required to get reasonable performance. Previously I have built my own power supplies but, these were for smaller machines with stepper motors so voltage and current requirements were less. The plate on the motors says 140V and the datasheet that I found lists continuous stall current at 6.1A. I would also like to run the machine from 230V single phase.

I have done some searching and found details of a few conversions but a lot of these used Gecko drives and limited the power supply to 80V.

Can anyone make any suggestions or point me in the direction of some info?

Thanks
Alastair

33

General Mach Discussion / Re: mach 3 beeps, loses position, does unexpected moves..

« on: October 14, 2011, 09:31:50 AM »

I don't even have speakers, so how does it beep?...

If you are hearing a beep without any speakers attached it is probably coming from the on board speaker on the motherboard. If this is the case then it is unlikely that what I suggested is your problem as the PC you are using probably doesn't have a sound card installed, doesn't have the sound card drivers installed or it's soundcard is disabled already.

It affected me and one other user that i know of. In my case it was very easy to reproduce once I realised what was happening. Everytime there was a comment line in the program the PC would beep and the steppers would stall a split second later.

Unfortunately I don't have the knowledge to be of much further help. Random issues can be a real pain to track down but I hope you manage to get sorted.

Alastair

34

General Mach Discussion / Re: mach 3 beeps, loses position, does unexpected moves..

« on: October 12, 2011, 05:36:06 AM »

Also check if it's actually the beep that is causing the move error.

I had an issue where if the PC beeped it caused the steppers to stall. I assume it was an IRQ conflict between the sound card and the Mach3 driver. I disabled the sound card and the problem went away.

Look to see if there is a comment line in the Gcode that you are running. A comment line causes the PC to beep. In my case the beep then caused the steppers to stall.

Alastair

35

General Mach Discussion / Re: ( COMMENT ) causes stall on rapid moves?

« on: August 16, 2010, 05:44:52 AM »

Glad you got it going.

The monitor I use had built in speakers so I could here the beeb. Eventually the penny droped that the stall always happened shortly after a beep.

Alastair

36

General Mach Discussion / Re: ( COMMENT ) causes stall on rapid moves?

« on: August 13, 2010, 05:36:22 AM »

I had the same problem.

I my case it was caused by the computer going beep when the comment was displayed.
I disabled sounds and haven't had any issues since.

Alastair