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Messages - geh7552

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81
Sounds like the VFD speed reference input is setup for 4-20ma instead of 0-10Vdc.  Reading voltage of 5Vdc to ground is typical of 4-20ma... (1-5Vdc across the drive's internal 250 ohm resistor = 4-20ma). Typically there is a jumper on the VFD that has to be moved and then the VFD's speed reference input has to be programmed for 0-10Vdc so the rpm scaling is correct.

82
General Mach Discussion / Re: Vfd settings
« on: February 25, 2015, 04:02:50 PM »
Set in the following order: PD005=400, PD004=400, PD003=400, PD144=3000

People should not buy VFD's if they don't understand how to set up and properly wire them. They are not plug and play devices. Huanyang drive are very low quality junk that don't (can't) meet UL or CE certification. They all lack RF suppression which makes them interfere with stepper electronics. You can buy a 1.5kw, 110V VFD's directly from Huanyang for $100. Most never run past a couple of months before self destructing.  Another trick 3rd party Chinese sellers do remove the drive data name plate and sell 1.5kw drives as 2.2kw units and prices. Good luck trying to get a replacement for a blown up drive.



83
General Mach Discussion / Re: Vfd settings
« on: February 23, 2015, 09:25:40 PM »
Are you using the VFD front panel controls or Mach 3 for speed control? Make sure the max speed in the VFD is set for 24000 and the drive is setup and wired for 110V and not 220V. Sounds like it's running at 1/2 speed. 

84
Bargain Basement / Re: Bargain Basement Rules
« on: February 23, 2015, 02:06:51 PM »
Suggestion: What about removing "Sold" items instead of letting them clutter up the postings for months/years. Some "Sold" items are over two years old...

85
General Mach Discussion / Re: Safer connection from Mach3 to X200 VFD?
« on: February 20, 2015, 08:19:50 AM »
I use stop--> Run from Here --> Start all the time... never an issue. If you use Stop and then Start (not using "Run from here" before the start) you will lose some position.

86
General Mach Discussion / Re: Safer connection from Mach3 to X200 VFD?
« on: February 19, 2015, 08:24:12 PM »
Ok... let's start again from the beginning. BTW... I'm using Ger21 screen set which should have nothing to do with the problem.

Post your XML file please and are you using a custom screen set or Mach's standard screen set?

1) Create a NEW clean profile. I've seen profiles get flaky after making a bunch of changes even though it shouldn't. Don't worry about the VFD plugins for now.

2) You are using a Ethernet SS right....? Not the USB version. Make sure you are using Mach V0.62 and latest ESS plugin.

3) What type of PC and Windows are you using?

4) What make/model of stepper driver are you using?

5) What is you steps per unit settings and speeds?

6) In Mach set the kernel speed for 25khz. Make sure "Safe Z on stop" is checked.

7) Open ESS config page: Set data rate for 1khz, motor freq for 32Khz, Number of Lines PreCalc=2000.  
 
Let me know the above info and we can work from there.

87
General Mach Discussion / Re: Safer connection from Mach3 to X200 VFD?
« on: February 19, 2015, 04:20:49 PM »
Open the ESS config page and make sure the "Feed Hold Controlled by Mach 3" is checked. Do not use Controlled by ESS. The verify you setup ESS and Mach as I suggested several postings back.

Using stop will NOT result in a loss of position. When you are ready to resume cutting select "Run From Here" then "Start". A pop up window will open warning the axis is about to move, select OK, then select "Start" again. Note the G-code line number when Stop was pressed and again when "Run From Here" is selected.  If Mach and ESS are setup correctly cutting will start exactly when it left off.

On my system when I hit "Stop" (not E-stop)... x,y axis stop dead... Z retracts. Using the above steps I can resume cutting right where I left off... done it many times without issue.

Home switches will not solve your problem. Again, I'm convinced you have something setup incorrectly because you are all over the map troubleshooting, making changes, fixated on Feed Hold and acceleration for some reason. Could be your profile is corrupt. If you post your XML file I will take a look.    

As I said a few times... Feed Hold does not function as one would assume and it should be removed from Mach to prevent confusion and broken tool bits.



  

88
General Mach Discussion / Re: Safer connection from Mach3 to X200 VFD?
« on: February 19, 2015, 10:50:40 AM »
What kind of stepper driver are you using? i.e. Gecko or a Chinese unit? I have a Gecko 540. Chinese TB6550 steppers do strange things and most never work right or fail all together.  

I'm out of suggestions. I'm convinced something in your Mach or ESS setup is not right. I have a old clunker Dell 6400 running XP home addition, 2gig memory... Mach V0.62. My ESS setup for 1khz data rate, 32Khz for steppers, precalc of 2000 and my system works without any issues. When I first started using ESS with the default setting of 4Khz I would get a out of data error after 20 or 30 lines of code especially with long x and y axis movement.

Pressing Mach "STOP"... x,y motion stops instantly, Z retracts to home, VFD shuts off.  G-code stops at the line the STOP command was issued. Then doing a "Run From Here" ---> "Start", it continues right where it left off. No ESS errors. I've run 3D Aspire files of 180,000 lines no problem.  

Feed Hold function in Mach 3 is a broken function and dangerous it should be fixed or removed. Maybe one of these years ArtSoft will have a version of Mach 4 where Feed Hold and CV actually work.  

The definition of insanity is doing the same thing over and over and expecting a different result. - Albert Einstein

89
General Mach Discussion / Re: Safer connection from Mach3 to X200 VFD?
« on: February 18, 2015, 07:51:05 PM »
The Feed Hold name is misleading and the function should be removed from Mach 3 or made to work properly. With Mach 4 somewhat released all hope of fixing any Mach 3 bugs are a lost cause. I refuse to pay $200 for the privilege of installing an incomplete Mach 4 so I have no idea if Feed Hold works any better.  

What happens from my observations is it stops Mach 3 G-code processing but never send a stop command to the external motion controller. So... the external motion controller simply runs out of data when the Mach 3 buffer empties. This is the motion delay you are seeing. In the case of ESS, without a "stop" command being sent and runs out of data, it triggers a data failure and stops all motion. Same happens using Feed Hold with a PP... motion continues until Mach 3's buffer empties. This is dangerous IMO.

Using the Mach 3 "STOP" command an actual stop signal is sent to ESS so its not expecting more data and all motion immediately suspended until a "Run From Here" and then "Start" is received. That's why I said not to use Feed Hold... but for some reason you are insistent to keep using it.

The definition of insanity is doing the same thing over and over and expecting different results. (Albert Einstein)  

90
General Mach Discussion / Re: Safer connection from Mach3 to X200 VFD?
« on: February 18, 2015, 07:26:33 AM »
Why are you STILL using Feed Hold?? Only use the stop command. Are you sure you set up the ESS correctly.

Open the ESS config page.... in the lower left hand set "Line PreCalculated" to 2000. 

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