Hello from Paris (FR), Please help , Since I installed a vfd and a spindle (0.8KW) controlled by PWM, my cnc is weird. - it connects well: OK - the spindle rotates at the requested speed: OK - But after a few seconds the lines scroll " [17:26:56] [ ] Idle|MPos:113.000,103.000,-23.000,0.000|Bf:15,0|FS:0,12000> [17:27:01] [ ] Idle|MPos:113.000,103.000,-23.000,0.000|Bf:15,0|FS:0,12000> [17:27:14] [ ] Idle|MPos:113.000,103.000,-23.000,0.000|Bf:15,0|FS:0,12000> [17:27:17] [ ] Idle|MPos:113.000,103.000,-23.000,0.000|Bf:15,0|FS:0,12000> [17:27:19] [ ] Idle|MPos:113.000,103.000,-23.000,0.000|Bf:15,0|FS:0,12000> " etc ..see image and while openbuild displays that I am still connected, the commands no longer react. I have to disconnect and reconnect to be able to turn off the spindle. However, I put ferrites everywhere as you say. before with the Makita it worked great. Sorry for google translate
Symptoms point to either: 1) Forgot to do docs:blackbox-x32:install-windows-selective-suspend [OpenBuilds Documentation] or more likely 2) EMI: docs:blackbox-x32:faq-emi [OpenBuilds Documentation] and Points more at an EMI issue - VFD spindles are horrendous - needs proper earthing, and shielded wiring on the spindle cabling. See EMI FAQ linked ^
oups ....."needs proper earthing, and shielded wiring on the spindle cabling." OK and another quick trip to "amazon" my vfd is under the work surface, I think I have to move it away in any case, a big thank you for your help so quickly, I'm doing all this and "I will be back"
With VFDs spacing sure helps, but if its not earthed, and the 400hz 3 phase AC is running up a long length of 3 core without shielding. And that cord is wrapped in the same cable chain as the low voltage cabling - no amount of Moving the VFD will help Have a read Swing arm for the cable, and VFD wired right will get you further
Wow. it's very big, note I can hang with my spindle cooling pipes I start with the shielded cable merci a vous
Bonjour Je n'ai pas encore reçu le câble blindé mais quand je l'ai, dois-je mettre le blindage sur la masse du vfd. merci
oups (translate error) hello I have not yet received the shielded cable but when I have it, should I put the shielding on the gnd of the vfd. thanks you
I am having the same issue on my 2 axis lathe build. It will seemingly randomly disconnect in the middle of a cut, the newest issue I am seeing is after finishing the cuts it is programmed in the g code to return to y0 x0 and it will either disconnect during one of these movements or it will continue past one of the preset 0 locations. This is after confirming before the start of the cut that it is starting at the y0 ,x0. I can't place any emi reasons as the setup ran fine for about 2 years in the same configuration.
Check switch wiring. Use troubleshooting tab to test. V+ to GND short on a switch can damage a BlackBox so double check! (Note the warnings on docs:blackbox-x32:connect-xtension-limit [OpenBuilds Documentation]) Shorting v+ to GND cuts the connection too (short on voltage rails, microcontroller doesn't get power, resets) A good timeframe to consider wire damage yes - check terminals for fraying or loose terminals with cables pulling out, etc.
