Jogs in same direction

halfstep

Halfstep
When I jog my X axis in the negative direction, it move to the negative direction and when I jog it in the positive direction, it still moves in the negative direction. I swapped the X and Y cables and the X moved both ways. I checked the wiring and it all looks good. Any ideas on what to do?
 

halfstep

Halfstep
Thanks for the reply. I am in the process of converting a PM940 to cnc. I am running clearpath servos. I finished the electronics enclosure a while back and now just starting to do the mill. I just installed the ballscrews and mounts. Everything was working fine. All 3 axis moved like they should. I was getting ready to work on mounting the homing switches and went to move the x axis and noticed it moved in the negative when I jogged it both in the negative and positive direction.

The problem is in the controller. If I switch the wires from the Y axis to the X axis on the controller, then the Y axis has the problem. As for the axis settings, I haven't done much with them other than the travel min and max and feedrate on the z. Everything was working when I turned it off and when I turned it back on and jogged the x axis, the problem was there.

AXIS X

motor: distance per rev 0.20000

drive: pulse per rev 800

max feedrate: 196.85107

acceleration: 3.93701

travel min: -48.000

travel max: 48.000

backlash: 0.00000

AXIS Y

motor: distance per rev 0.20000

drive: pulse per rev 800

max feedrate: 196.85062

acceleration: 3.93701

travel min: -36.000

travel max: 36.000

backlash: 0.00000

AXIS Z

motor: distance per rev 0.2000

drive: pulse per rev 800

max feedrate: 50.00015

acceleration: 3.93701

travel min: -36.000

travel max: 36.000

backlash: 0.00000
 

breezy

Moderator
@halfstep

I wanted the settings directly from your controller so we can see all the details of your setup, but what you have supplied shows that there isn't anything wrong with them.

Compare the voltage on the X axis & Y axis direction connections with cables disconnected, when you jog back and forth.

If they are different, then raise a ticket with support on support@masso.com.au

Give the serial number of your controller, all details of what tests you have done and include a link to this page. Also upload your settings files.

Regards,

Arie.
 

halfstep

Halfstep
Arie, can you help me with how to test the x and y direction connections? I have a good Klein multimeter. Where do I hook the leads? What voltage reading should I be seeing?
 

halfstep

Halfstep
Quote from Model and Toolmaking on July 26, 2020, 2:52 am

I had the same problem. It was a dip switch on the stepper driver set wrong. Check to see if your drivers are set the same.

Thanks for the reply. These are clearpath servos and they don't have drivers.
 

derekmccoy

derekmccoy
I'm having the same issue here on my Z axis. If I go into the F1 setup menu and invert the axis, it will do the same but in the opposite direction.
 

breezy

Moderator
Derek,

Check voltage between D-, D+ and ground you should get around +/- 4 volts when you jog in each direction. If that is not the case then you have damaged the output I/C.

If so raise a ticket with MASSO Support to arrange repair. support@masso.com.au

Regards,

Arie.
 

derekmccoy

derekmccoy
No, all voltages seem fine. I've powered Masso off and back on and it's now working fine. Annoying because it seems do this randomly.

UPDATE: I think I figured it out. If you have a homing alarm and your machine coordinates are outside the travel min/max (which often times they are because Masso seems to throw it a random number every time), the axis will only travel in one direction. I think it's the direction in which it thinks the home sensor is. Solution is go into F1 setup, give the travel direction in which you want it to move and give it a ridiculous number like 100,000 then try again.
 
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