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Topics - comet

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51
General Mach Discussion / Encoder pull up resistors
« on: February 17, 2009, 02:40:49 PM »
Hi,
  Does anyone have experience of using pull up resistors on encoders?
The story is:
 While "playing" with a G340 and a servo (heds 5500 encoder) I noticed I had erratic movement
with cables 12 foot long.
  I swapped each cable out and found that it was the 5volt feed line,and if I shortened it to below
4foot it would work fine,even though the main power and a-b channel (screened) were 12ft long.
 I then put a seperate psu to feed the encoder,this made no differance same problem.
  I remember reading somewhere about putting pullup resistors on long a-b cablles, would this work on
the 5v line? if so what sort of value and series or parallel? which end encoder or drive?
     Cheers

52
General Mach Discussion / step-analog board,CNT 803
« on: January 08, 2009, 05:34:50 AM »
Hi,
  What is the curant state of play with available step-analog conveters?
I have found these,but they are quite expensive:

http://www.vigproducts.com/html/an2step.htm

 Also while Im here does anybody have any information on the Ctek CNT Controller?
I cant get any information out of the manufacturers regarding the servo drives.
I am thinking of retro fitting to Mach3
   Hope someone can help
   Tony

53
General Mach Discussion / cat 5
« on: December 20, 2008, 12:26:38 PM »
Hi,
  would cat5 network cable be ok for the wiring to the encoders on a servo system?
     Tony

54
General Mach Discussion / RF-45 conversion
« on: October 07, 2008, 05:38:48 AM »
Guys,
  has anybody out there converted a RF-45 to cnc?
I am considering one of these as they seem to be the perfect size
for a garage,plus they have a massive dovetail coloum.
I have done a number of mach/servo conversions and upgrades so really
I am looking for the suitability and Ideas about the machine itself,
particualy in the area where the head ataches to the coloum,as this looks a little
on the small size(length of dovetail)for the overhang of the head.
I am thinking of purchasing the ISO 30 version,incase I decide to build a toolchanger,
 with the 3phase motor to run off a 240volt VFD inverter,I'm in the UK.
Cheers
   Tony

55
General Mach Discussion / mastercam posts
« on: August 16, 2008, 12:42:37 PM »
Hi,
  can anyone help,I have mastercam X I use the fanuc generic post which largly works with mach
but I always have a line reading "G91 G28 Z0" before each toolchange which I can edit out but its a pain.
How do I alter the post to remove this line?
  Cheers

56
General Mach Discussion / beefing up a G320
« on: April 19, 2008, 01:21:28 PM »
Hi,
  Is it possible,on the g320, to remove the power mosfets and replace them with remotely mounted 200 volt ones.
to run bigger motors? Assuming they are mosfets!
   Tony
   

57
General Mach Discussion / indexing
« on: April 13, 2008, 04:54:42 PM »
Hi,
  is it possible to set one of the inputs to act as the run or start switch when that pin is taken either high or low for say .5 second?
the reason being that I would like to use mach as an indexing head controller.
   Regards
   Tony

58
General Mach Discussion / anilam servo card
« on: April 10, 2008, 10:37:05 AM »
Guys,
   can anyone help,I have an anilam 1100m cnc controlled turet mill.
the Y servo (brushed DC) quivers slightly when staitonary,it stops if you place you hand on the wheel
to damp it.When the axis is fed it is quite noisey at any speed.The mechanics are fine.
  It is very reminisent of a gecko 320 with too much gain or under damped.
Can you adjust the damping on the card part no (3150009666)? I phoned Anilam but they would only send out an engineer which I simply cant afford,niether can I find any thing regards tuning on the internet.
  Could someone help before the problem gets worse?
   Regards
     Tony

59
General Mach Discussion / rs 232
« on: January 16, 2008, 01:45:29 PM »
Guys
   Can anyone point me in the direction of some DNC freeware?
I need something easy to operate.
    Cheers

60
General Mach Discussion / anilam 1100 retrofit
« on: January 12, 2008, 02:47:36 PM »
Guys,
  just bought a large turretmill (5hp) that is equiped with an anilam 1100m controll
and servo,s. its a 1996 machine.
  althought the anilam works perfectly and the drives are good ect, I am used to using mach3
so I would like to link mach3 to the drives and remove the anilam controll do I need those pixies?
  Any advice positive or negative would be appreciated.
      Tony

Pages: « 1 2 3 4 5 6 7 8 »