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Messages - CES

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51
Hi Tweakie,

  The pulse train is being amplified by the card and the pulses I measured were at the output of the PP card. With an amplitude of 5V and a duty cycle of 10% I think I would measure about 0.05V with my DMM directly from the PP. However, with a value 24V (or something close to it) and the same duty cycle I would expect to measure a higher value at the output of the driver card which I do.

CES 

52
Ah, the steppers have that good dent feeling when I use a vise grip. Even with the motors connected to the board and power on, the vise grip is able to rotate the shaft with ease. So, can I guess the driver board is bad?

53
Hi Tweakie, I am not able to  turn the motors. I thought this not quite right. The steppers are very strong steppers (200 inch pound?) so I did not think I should be able to turn them.

54
Hey Woodspinner,
  Nope, the shafts are only vibrating as much as the motor housing.

So here is what I know:

  The correct port address is in place
  The port is outputting pulses
  The motors are being driven by pulses
  The pulse train may not be large enough to do the work - Caution - only using a DMM! Pulses reaches 3.38V on DC and about 6V on AC
  The pulse train is always positive on A+ to A- and on B+ to B-
  Lower Slow Jog Rate causes about the same effect as dropping the Steps per or Velocity, the motors whine or grind
  When whining, no shaft movement occurs and I can make the whining go so high pitch that I can't hear it
  When grinding, the shafts move in large jumps but not in a coordinated manor
  The DC supply outputs 24.08V
  The X axis output is connected to the X motor, Y to Y and Z to Z per Mach 3 setup. This checks out with the motors.
  Hood and Tweakie have been trying to help and now WoodSpinner has joined the group of helpers.

55
Hello Hood,

  With a Steps per setting of 120, Velocity = 30, Acceleration = 35 and G's = 0.0388528, the motors make a heck of a noise and the shafts move but not in a single direction. Above 500 Steps per the shaft movement stops and the grinding noise changes to a whirring. The grinding noise changes as the Steps per goes up.
  Could I have been so unlucky as to have picked up three bad Stepper Motors?
CES

56
Tweakie,

  Bad news, The Parallel Port Monitor does run in Windows XP mode on my Windows 7 PC but it does not see LPT3. I will reconfigure the parallel port to be on LPT2 but that will have to wait for the morning as it is after my bed time, sorry to say. 5:30AM comes early...
CES

57
Okay Tweakie and Hood,

  1 - Yes, I have checked the motors. 0.003 ohms Red to Blue, Green to Black. All motors are the same. DC signal is a wire between my DMM leads.
  2 - Yes, The Parallel cable is a one to one cable. All lines are point to point, Pin 1 to Pin 1, Pin 2 to Pin 2,...Pin 25 to Pin 25. The little beeper is good to work with.
  3 - No, it will not run in Windows 7. Oh, Yes I can and will. The motors are making a whirling noise so I expect the port is working... Installing Windows stuff. I'll have to get back to you on this, a restart is necessary for me to run Windows XP in Windows 7.
  4 - Yes, I have the correct Port Address. I happen to be using LPT3 at address 0x8C00.
CES
 

58
Hi Tweakie,

  I downloaded the changed xml file, placed it in the Mach3 folder, renamed the current file and renamed the downloaded file as per your instructions. I get no movement in the steppers at all in any screen.

With the file I posted, the Time and Int hovers around 2.3 to 4.8, the pulse frequency is 27989 to 27999, Blended Spd is 16.8 while jogging with the arrow keys. The DRO's show movement and the motors hum but the shafts do not move.

I started with the setting of Mach3 and changed to inch, changed the table size and setup the "Config" menu items for Port and Pins, Motor Tuning and General Config to setup the editor to be Notepad++.exe (Freeware and a very good tool).

CES

59
General Mach Discussion / Re: No motor running or axis movement
« on: August 05, 2012, 10:24:23 PM »
The Time and Int hovers around 2.3 to 4.8, the pulse frequency is 27989 +/- 10, Blended Spd is 16.8 while jogging with the arrow keys.
I started with the setting of Mach3 and changed to inch, changed the table size and setup the "Config" menu items for Port and Pins, Motor Tuning and General Config to setup the editor to be Notepad++.exe (Freeware and a very good tool).

60
General Mach Discussion / Steppers making noise but shafts not rotating
« on: August 05, 2012, 04:42:23 PM »
Hi All,

  I have been turning the handwheels for about 4 years and now it is time to change that. I located the ball screws and associated hardware and then Mach3 and then the NEMA23 stepper motors and the 3 Axis CNC Driver board and a power supply. At this point I have everything but can't verify the motion of the stepper motors.

I am running Mach3 Version R3.043.022 (the build the really bad looking green Settings screen).
The TB6560 stepper motor driver controller board is the interface between the Steppers and the PC.

http://www.nbglin.com/tb6560.htm and see below for original manufacturer (hyu68).

Motors make noise but shafts do not move. I have increased the pulse width (in Motor Tune) of the step pulse from 0 to 5 in 1uS increments. No motor shaft movement. I have tuned the motors so they sound smooth and don't jerk on the table but still no shaft movement. I have changed Acceleration and Velocity to minimal values and gone up from there and all I get are motor buzzing but no motor shaft movement.

If I turn the Slow Jog Rate to 1% or lower, the motors grind but the shafts do not move. Below 1% and the motors make a grinding noise and the shafts oscillate and but do not actually rotate.
I have been unable to get any forward or backward movement out of the motors so I have not attempted to calibrate the different axis which I will do as soon as I get rotation out of the motor shafts.

The motors are wired with Red to A+, Blue to A-, Green to B+ and Black to B- on all three motor connections.

My DC supply from Mean Well is set for 24.08V and will support up to 14.5A before dropping below 22V. The NEMA23 stepper motors are rated at 3 to 3.5A so the power supply has enough power to drive all three at the same time and remain at or very near 24V.

 My TB6560 3-Axis CNC Driver board came with no information; however I have found the manufacturer and requested information. I expect the data to be what I am using for my X, Y and Z pin settings.

I found several different Port / Pin settings that make the motors make sound but none that make the shafts turn.
In searching for the correct Port Pin settings, this is what I found -
On one web page:
Axis   Step    Dir
-----------------------
X      2         3
Y      4         5  Y axis makes noise if 4 is changed to 14
Z      6         7

and on another:
X      1         7
Y      8         3
Z      5         4

and another setting that I found makes the motors make noise but still not move the shafts:
X      2         7
Y      14       3
Z      6         4
(This is the one I am using)
http://www.fozztexx.com/CNC/HY-TB3DV-M_3Axis_Driver.pdf

Original manufacturer website (sorry it is only in Chinese)
http://www.hyu68.com/HY-TB3DV-M.htm
Google translator web page:
http://translate.google.com/?tl=zh-TW&q=undefined#zh-CN/en/


The steppers are on a table in my house so not connected to my (future) CNC. The motors can turn forever and hit no stop. I think I have ESTOP turned off (not enabled).

I must be missing something in my configuration but after watching all of the videos and searching the web I found nothing that would make the motor shafts rotate.

I did select "inch" and wish I had left everything in "mm" as the entire setup would have been easier.

Any help in getting the motor shafts turning the way they should would be greatly appreciated by this complete novice CNC builder.

Oh, BTW, I am modifying a Grizzly MILL with parts from CNC Fusion.

My xml is attached.

Thanks in advance,
CES

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