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    NC Routing, FOAMULAR 250 XPS, Feeds and Speeds

    Does anyone have experience with CNC routing the subject foam, it's a polystyrene foam board used for insulation. I'm using an Amana Tool 46428 SC Up-Cut Spiral Ball Nose 1/8 R x 1/4 D x 1-1/8 CH x 1/4 SHK x 3 Inch Long x 2 Flute. The Amana recommended tooth load of approx. .002" seems okay, but...
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    MDI Commands and Soft Limits

    I'm sorry what is MTB?
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    MDI Commands and Soft Limits

    I have confirmed all soft limits (XYZ) are ignored when using MDI commands. When jogging soft limits work, G-code programs are limited, but not MDI commands. After the gantry goes past a soft limit jogging won't go deeper into the limit, but I can jog out of the soft limit towards the safe...
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    MDI Commands and Soft Limits

    I'm going to try to see if this happens at other boundaries (X/Y). I don't think it's a small overrun. I think it's not seeing the STOP sign at all. I'll let everyone know what happens at the other limits, as I have more room to run before the machine hits the brick wall :-/
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    MDI Commands and Soft Limits

    Mtndew, thank you OK I moved to G54, then moved my Z well below the soft limit by jogging. Then used the MDI command - G0 G54 X0 Y0 Z.2 - it again moved past the soft limit. I couldn't manually jog any higher, but could jog outside (lower) the soft limit. Any more ideas? When below the soft...
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    MDI Commands and Soft Limits

    Today I mistakenly enetered a MDI command - G0 G54 x0 y0 z1 - the machine moved to the commanded postion, which for z was past a soft limit. I have Z zero set to the top of the travel just below the soft limit switch. Of course I mistakenly set Z to a positive vs negative number, which drove...
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    Clausing 5914 phase converter choice

    JST - I’m certainly in agreement with what you have stated. I’m coming from a home shop perspective and experience. My comment on protecting each branch is moot if that equipment has the proper protections independent of the main branch. But you know this. The reason I bring it up is many...
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    Jittery Random Operation, CNC Router

    Problem was resolved with computer reboot. Not certain of root cause though. I’m just beginning my learning curve on the design and operation of my machine. I’m a ‘hobbyist’ and recently purchased the machine. I have had to rework the poorly done retrofit to servo motors. The focus has...
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    Jittery Random Operation, CNC Router

    I want to thank everyone for the good input and suggestions. I figured it out, well kind of. I noticed the PC was sluggish getting starting and hung when I logged in. That seemed strange, so I shut it down and did a reboot. Problem solved! Not certain why, but it's always easy to blame...
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    Jittery Random Operation, CNC Router

    Mach3 communicates with CNC controller, PoKeys5, which controls the servo drives. It has also occured during X/Y motion without Z motion. The location of the problem is random in location/time. I have done a brief mechanical check and found nothing apparent. I'll do a more thorough check...
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    Jittery Random Operation, CNC Router

    Please view attached link. You can see and hear the stutter / jitter as the program starts. The Z axis is raising from G54 position to begin the process. CNC Jitter Video
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    Jittery Random Operation, CNC Router

    Additional information - Mach 3 interfaces with POKEYS57 breakout board. Jed, please expand on what 'communicaiton stutter step' means.
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    Clausing 5914 phase converter choice

    I understood the original post to be specific to a single 240 leg and piece of equipment. Yeah, you could have the VFD sized for the current capacity of the branch and then split it off to multiple machines, but then it may create some challenging separate protection legs downstream and you...
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    Jittery Random Operation, CNC Router

    I did give some consideration to my Mach 3 setup ( constant velocity in particular). But, the problem occurs randomly and in a different spot every time. Once in a simple retract of the Z axis. Did you have something specifically I should consider with Mach 3?
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    Jittery Random Operation, CNC Router

    Well unfortunately I don't have many details, but here goes. *The machine is an old K2 model, but the drive units have all been redone with leadshine servo and servo drives. *Three axis with ball screw on Z, racks on X and Y, and dual drives on each leg of of the Y axis. *Mach 3 controller...
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    Clausing 5914 phase converter choice

    I have had this setup for more than 10 years. The Teco VFD only acts as a phase converter. I have it set for soft start, in-rush current is not an issue with softstart. It works exceptionally well. The speed is adjusted by the lathe via its variable drive unit, as originally designed...
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    VFD / Spindle Tripping near by GFCI Outlets

    Here's an update. The VFD startup seems to minimize the GFCI trips (shield grounded at the VFD only), but I just had my first trip today. I'll be shielding the end at the motor now. I'd like to tie into the motor grounding pin on the connector by exposing the shield on the cable, unbraiding a...
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    VFD / Spindle Tripping near by GFCI Outlets

    Hallicraftter, I'll have to look it up. I thought Jim was referring to the phone in the picture (just kidding in fun of course).
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    VFD / Spindle Tripping near by GFCI Outlets

    Dave / JS, The AM radio sounds like a good experiment to learn with. By the way, it was an AM raido I made with my Heathkit long ago. When I experimented with antenna wire lengths. I used a six for wire and wraped it around a wall light fixture. Little did I realize the brass fixture housing...
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    VFD / Spindle Tripping near by GFCI Outlets

    JST, thanks for the explanation. It's the best description of what is going on in shielding that I have ever read!!!! I'll keep everyone posted on what I experience. My intent is to go without shielding the motor side for awhile to see if this 'fixes' my issue. Even if it does, I'll likely...
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