I finished assembling my quenbe Pro and gave the machine some tests. I have it moving very well under its own programming. I was very excited. I have a 2.2KW 110 V motor, a VFD and the CNC xpro V5. I set up all of the settings based on some different guides, all with the same settings. I was able to use the VFD to get the spindle turning. I then connected the VFD to the cnc pro thinking I could control it with CNCJS, I was wrong, I forgot to change some settings in the VFD. I later went back to start it at the VFD. Now the spindle hums for a sec and I get an E.OC.N error. Over current. I reset the VFD to factory, the reset the settings, same error. I checked for continuity between U, W and V and got consistent numbers, and open between these and ground. This is not a sign that spindle is bad, correct? Are there any suggestions on how to trouble shoot this? If it helps I can post the VFD model latter and the settings I put in it. Thank you in advance.
We'd recommend contacting the vendor you purchased it from. Most likely the VFD reset changed their preprogrammed parameters back to defaults.
Ok, I reached out to the vendor and in the mean time I double checked my settings. I found that I had one wrong based on some other tutorials. I also fixed my probe issue which I had not asked about here. Now the spindle turns on accelerates and decelerates via the VFD. I am using CNCJS and a CNC XproV5. Per CNCJS's github I did the following $Spindle/TYPE=H2A in cncjs on the VFD PD000 0 unlock parameters PD001 2 Command source is RS485 PD002 2 Speed source is RS485 PD163 1 Communications address 1 PD164 1 9600 b/s PD165 3 8 Bit No Parity - RTU PD000 1 lock parameters I went back to cncjs but can not get the spindle to turn on. no error on VFD, any thoughts as I wait for the vendor response?
VFD usually allows front panel, or control inputs. Not both Thus VFD is still configured to ignore the control inputs. See the VFD manual on how to enable that
CNCJS is giving me the following Errors Undefined VFD_RS485_TXD_PIN _RXD_PIN _RTS_PIN I have it wired correctly, and I think I have all the settings correct on the VFD, I will look agian. Anything else I should look at? I am waiting for response from vendors as well
I was able to get the spindle to turn on with CNCJS after a firmware update, but that is all. I have decided to set the VFD back to the setting allowing it to be controlled by the touch pad while I continue to work out the issues. I took the CNC for a test drive and managed to break 3 bits. I thought I had done a deep dive into the feeds and speeds but I am thinking I am missing something. Could someone suggest where to look for useful info to help me make my first full project. All I am doing is cutting a grid into my MDF spoil board with 1/8 end mill, a chip load of .005, rpm of 15000 and 2 flutes. By my calcuation this would give me a feed rate of 150 IPM. I did see some burning in the corners. If it helps, here are the first lines of my code G21 G90 M6 T4 M03S15000 G0 X571.5000 Y774.7000 F5999.9880 G0 Z0.9906 F299.9994 G1 Z-1.5875 F178 G1 Y876.3000 F3810 G1 X673.1001 G1 X774.7000 G1 Y977.8999 G1 X673.1001 G1 Y876.3000 G1 Y774.7000 G1 X571.5000 G0 Z0.9806 F299.9994 G0 X673.1001 Y1079.5000 F5999.9880 G1 Z-1.5875 F299.9994 G1 X774.7000 F3810 G0 X571.5000 F5999.9880 G1 X673.1001 F3810 G1 Y977.8999 G1 X571.5000 G1 X469.9001 G1 X368.3000 G1 Y1079.5000 G1 X266.7000 G0 X469.9001 F5999.9880 G1 X571.5000 F3810 G1 Y977.8999 G1 Y876.3000 G1 X469.9001 G1 Y774.7000 G1 X368.3000 G1 Y673.1000 G1 X266.7000 G1 Y571.5000 G1 X165.1000 G1 X63.5000 G0 Z0.9806 F299.9994
Thats a bit fast What was your depth of cut? Come down to F1000-2000 range - start off slow and work your way up Also check your Max Rate setting in Grbl's settings as it acts as a feedrate limiter
You have a depth of cut of 1.5 mm and you are plunging straight in with a 1/8" bit. Your feedrate for the next move of 3810 mm/min is a bit fast for such a small bit. As @Peter Van Der Walt said, reduce your feedrate and use a ramp in at the start of the toolpath instead of plunging. What cam software are you using? Alex.
The feed rate of 5999 is non cutting movement in xy. I did turn down the feed a lot and it helped. Thanks. Now I just need to get my controler to controle the Vfd. I have had to turn it on manually for the time being.
