What drive are you using? And how is it wired?
Hi,
I just installed my UC300ETH to my bob, a 'CP0-10V' board from cnc4you.co.uk
Everything worked out with the installation of software, connecting through ethernet directly, finding the license and such. Everything boots up and I started doing the axis setup. Using the manual from CNC4YOU I set up the X-axis as on the pictures below.
Nothing happens to the stepper motor and while measuring the output voltages from the BOB I can see it's changing for Port 3 (Dir X) from 0 -> 5V when changing direction with the jogging arrows. The step pin, however, shows no sign of changing voltages.
Looking at the diagnostics I see no sign of life there either for pin 2.
I tried with pins 4 and 6 which should be for Y and Z, nothing.
I also tested the emergency stop for Pin 12 - Port 2, which works.
I have:
- 5V to the UC300eth
- Using port 2
- Using an IDC26-DSUB25 Parallel cable between the UC300eth and CP0-10V
- 15V separate PSU for the CP0-10V
What am I doing wrong? Can I isolate the problem somehow?
Can I measure anywhere to see if the UC300ETH is sending anything to the BOB?
Any help is appreciated!
Similar Threads:
What drive are you using? And how is it wired?
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
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[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
I am using the CWD556 driver which comes in a kit with the CP0-10V BOB.
You can find the data here.
https://www.cnc4you.co.uk/Digital-DS...-50Volt-CWD556
Wiring as follows except that the CP0-10V has it's own separate PSU at 15V
Is the shaft on the motor locked up, or does it spin freely?
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
It's possible to rotate it fairly OK with the fingers.
I tried a couple different settings and it locked once for some time and got a bit warmer. Unfortunately, I don't remember the settings.
The drive is probably wired wrong, or not enabled.
Try toggling the Active Low setting on the Enable Pin.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
I've doubled and tripplechecked the wirings, I cant find any wrongs there.
I did some measuring on the pins out of the UC300ETH. Pin 1 (Enable), 2, 4, 6 and 8 changed varied from 0 to 0.02V, at most while running a program going all axes back and forth.
Pin 3,5,7 and 9 (dir) changed from 0 to 5V at each line of code. Could there be a problem with the UC300ETH?
Measuring from the CP0-10V output the voltage on the Step pins varied from 2.3V to 2.7V at max. Dir pins changed between 0V and 5V at each line of code.
I've tried every combination of Active Low setting, nothing works.
Also realized that the motors freezes as soon as I turn on the cabinet, however, the motors releases as I start the UCCNC program.
I've now fixed so that the motors are spinning, changing kernal frequency and removing the enable cables, both ena+ and ena-, from the driver.
However. It's supposed to go 20 units back and forth, but it never ends up being at the same place each cycle, which it should since I'm not using any backlash settings yet.
You can also hear how the motors don't sound perfect, not sure what it could be.
Any ideas?
How should I start doing diagnostics? Where should I focus? Electronics really isn't my thing...
If I go above 25kHz:
X axis only spins CW (skips every second line)
Y spins both CW and CCW as it should (still not correctly tho').
Z only goes CW, and when it's supposted to go CCW, it continues CW.
The reason it wasn't working before was that you had setup the enable wrong.
What microstep setting is the drive set to?
What is the steps/unit set to in UCCNC?
What is the velocity set to?
What is the acceleration set to.
Don't change the Kernel frequency, until you have everything working properly. Leave it at 25Khz for now.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
The driver is set up to 10 microsteps per rev. i.e 2000 steps/rev
Steps/unit: 200
Velocity: 2000
Acceleration: 100
The motors are wired Bipolar parallel as recommended by CNC4you
I made a video of my steppers running a program going from X10 Y10 to X-10 Y-10, back and forth, this is the result. One way seams nice, smooth without losing steps.
The other direction, X is slamming quite hard when changing direction and is missing half the motion. Y does not even move.
Here's a few pictures of my setup
X axis setup
https://imgur.com/yilpHYO
https://imgur.com/H6l2d0U
https://imgur.com/rp4t4Iz
https://imgur.com/VeHUq88
Y axis setup
Thanks for taking the time to help me Ger. Much appreciated!
Steppers not mounted to anything can often suffer from resonance issues, and act like what you are seeing.
If they were actually mounted to a machine, they may not exhibit those issues at all.
What do you have the current set to on the drives? ANd what's the motor's rated current?
I don't think your issue has anything to do with UCCNC or the UC300ETH.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Also, what size are those motors?
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
These are Nema 23's, 4Nm dual shaft motors. Measures 100mm length excluding the shafts.
This is the motors specs:
https://cnc4you.co.uk/resources/Step...1-03%204Nm.pdf
The motors wired in Bipolar parallel is rated at 4 amps. Drivers are set to 3.8 Amps as recommended by the reseller (max is 5.6A).
I bought this from CNC4YOU as a kit, including motors, drivers, PSU's, and the breakout board so I do hope they fit together. They supposedly use them on all their machines with UC400eth.
I somehow managed to get them spinning nicely now, trying them separate as A_Camera mentioned to me at the CNCdrive forum. I also increased speed and acceleration,
I use mm. But I have no real clue in what to enter.
These are the results with velocity 5000, Acc. 300 :
As you can see on the X,Y,Y1 and Z combined, something is still wrong. But I have no idea what.
I learnt that they only work like this if I start at the top of a new program, rather than starting in the middle of a program. Which is weird?
If I start in the middle of the program they only move CW. Not CCW, they just stand still.
I would ask the seller for his opinion.
But I wouldn't really be too concerned, until you have them mounted to a machine.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)