Welcome, Guest. Please login or register.
Did you miss your activation email?
September 01, 2015, 07:08:49 AM

Login with username, password and session length
Search:     Advanced search
* Home Help Search Calendar Links Login Register
  Show Posts
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 »
21  Mach Discussion / General Mach Discussion / Re: AC Servo Spindle and ESS on: April 15, 2015, 01:37:14 AM
Jeff, I neglected to mention that hitting the Estop also cuts power to all drives.

Dan
22  Mach Discussion / General Mach Discussion / Re: AC Servo Spindle and ESS on: April 14, 2015, 02:23:53 PM
Using the latest ESS plugin with 062 Mach version.

I don't have a problem with the Estop as it sends a command directly to the Serrvo emegency stop input. The servo then coasts to a stop. Like I said, I can send a signal over modbus to the servo emergency input on a Stop hit. Wonder if Mach allows to trigger a signal on a reset hit as well.

Dan
23  Mach Discussion / General Mach Discussion / Re: AC Servo Spindle and ESS on: April 14, 2015, 09:09:39 AM
Jeff, it is the possibility of mechanical damage to the machine by hitting a wrong button in Mach which frightens me. I want my machine to be fool proof. Also, I still keep getting the "SmoothStepper ran out of data" message every now and then, and I am not sure about this, but I think it would also cause that sudden stop. Again, not sure about this one as I've just fitted the large chuck and with small one it really never made a difference how it stopped so don't recall.

Russ, it is a 2kW Delta servo. Don't have an external resistor. It has a 6:1 reduction transmission to the spindle, so the motor doesn't experience the full inertia of the load. Still easily tears an HTD-5M 15mm wide belt not even tripping an error.

Dan
24  Mach Discussion / General Mach Discussion / Re: AC Servo Spindle and ESS on: April 14, 2015, 05:53:13 AM
Thanks Hood.

Dan
25  Mach Discussion / General Mach Discussion / Re: AC Servo Spindle and ESS on: April 14, 2015, 03:31:01 AM
Oh... thought that threading issue with the CSMIO had been resolved.

Mentioned it to Greg a few times in the past, but as I recall he didn't know how it was different from the SS. He said he was pursuing the original Mach's behaviour and thought this was the normal behaviour it. On the small lathe I too have the habit of turning the spindle off prior to Stop, but sometimes I forget which is not a big deal - it's not nice as you say. However, with this machine, it is much more than being merely not nice with a chuck weighing more that 70kg.

As a workaround I could probably send a signal from Mach upon a Stop (or Reset) hit, to the Servo Emergency Stop input. Somehow, hoped you might had a more elegant solution for this after years of use Wink

Anyway, will talk to Greg again, and unless he can fix it real soon, will have to switch to CSMIO.

Have you switched to Mach4 on any of your machines, by the way?

Thanks,
Dan
26  Mach Discussion / General Mach Discussion / AC Servo Spindle and ESS on: April 14, 2015, 02:10:44 AM
Hi,

Have fitted an AC servo to a large spindle (380mm chuck). It uses an ESS as a controller. Trouble is, when spindle runs, hitting the Stop in Mach causes an abrupt stop of the pulse train to the servo drive and it instantaneously stops. With a chuck that big, it means tearing the belt and causing other damage. With the USB SS it has never been an issue (have it on two machines) and hitting Stop still smoothly decelerates to a stop.

Hood, I am sure you encountered this on your Computurn with the large chuck prior to switching to CSMIO. How did you solve this?

Thanks,
Dan
27  Mach Discussion / Mach4 General Discussion / Re: Mach 4 Bug Reports on: April 06, 2015, 05:01:27 AM
Is there a fully functional plugin yet? The website still has the initial Beta plugin, several months old, which doesn't include many features.

Dan
28  Mach Discussion / Mach4 General Discussion / Re: Mach4 Screw Error Mapping on: March 12, 2015, 04:06:05 AM
Thanks Steve.

Dan
29  Mach Discussion / Mach4 General Discussion / Re: Mach4 Screw Error Mapping on: March 11, 2015, 02:26:14 PM
Sad So no kinematics? Is it possible? I know I can do it with a PLC - the pulse train from Mach would go through a PLC which would have the mapping data and add or subtract a few steps to account for the error. But having this in Mach would greatly simplify things.

Dan
30  Mach Discussion / Mach4 General Discussion / Re: Mach4 Screw Error Mapping on: March 11, 2015, 01:02:54 AM
Thanks for the information Steve. Waiting forward to playing with it.

While at it, just would like to make sure we are talking about the same thing. I have a 4.5m long cylindrical grinder. It is real hard to get the 4m long linear guides absolutely straight by mechanical means. I have done so to about 0.05mm. So when grinding a 4m long shaft the fluctuations in diameter are up to 0.1mm. I would like to be able to map the Z axis so that for each Z value, the X moves to correct the straightness error. Is this the feature you're working on now? Asked this on the Yahoo group and had Brian answer this was it, but now I am afraid we didn't understood each other.

Dan
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!