I have an xPRO V5 running GRBL on my 3040 CNC router, with the BLDC spindle controlled by the PWM output going to a Novusun NVBDL+ spindle driver (the no-Hall effect version). My problem is that I cannot make the spindle stop. I have it connected so that the EN output from the xPRO goes to the CW (run clockwise) input on the spindle controller, and the PWM output of the xPRO going to the PWM input of the spindle controller. On power up, the spindle immediately starts running full bore (12,000rpm). the mode settings on GRBL show M5, ie spindle disabled. As soon as I issue a M3S10000 (enable spindle) the spindle changes speed to 10000 (or whatever you request) and from then on all speed changes are effective. BUT, M5 does nothing. The EN output does change state with M3/M5 (as measured). The PWM average voltage varies with speed commanded. But when the spindle is disabled, there still appears to be a voltage on the PWM. So, how do I get the spindle controller and GRBL to play nice together? Has anyone successfully connected a spindle via GRBL to the PWM of a Novusun spindle controller? thanks Rob
did you solved your Issue ? , Because I have the same problem with my NVBBDL+ , I even try with the 0-10 Volt,, but no rsponse , I even with a varible powwer supply and No action I connect the CW to ground spindle start full speed as soon I apply the power
No, I haven't solved the issue yet. I tried making a buffer with 74-series TTL buffers, no luck. The xPRO logic out is 3.3V, so in theory enough to trigger TTL. So next try is to use 3.3V-5V buffer/drivers. I can live without speed control for now, but it would be nice to have.
Another proble Arise , the momment I start the job aand spindle start , I lost my connection try to reconnect but USB port is nbot found anymore. Can you sharee your config so at least I will be able to start the job wthout benn disconnected By the way i'm using blackbox x32 Thank You
No I dont think so I put ferrite beads to all my motor, and also run all my switch cable in a shielded to ground cable , but only on one side! I dont want to create a ground loop I found something else, my 0-10 volt is always at 10 volt even if no tool command is given by the system, to be sure I disconnect my spindle from my NVBDL+ device ant take a voltage measurement at the 0-10Volt terminal from de X32 box Is my box is defective ?
look at your $31 and $30 settings. are they 0 and 'max spindle speed'? The GRBL default is 0 and 1000 and since most spindles are higher than that almost any spindle speed command will result in max speed.
Hello David thank you for your answer thiis my setup , [12:15:47] [ $$ ] $30=1000.000 ;Maximum spindle speed, RPM [12:15:47] [ $$ ] $31=0.000 ;Minimum spindle speed, RPM [12:15:47] [ $$ ] $32=0 ;Laser-mode enable, boolean [12:15:47] [ $$ ] $33=400.0 ;Spindle PWM frequency [12:15:47] [ $$ ] $34=0.0 ;Spindle off Value [12:15:47] [ $$ ] $35=0.0 ;Spindle min value [12:15:47] [ $$ ] $36=100.0 ;Spindle max value
thank you I will try, any Idea why my 0-10 volt stay the same even if I do M3 S500 Is there any special config tha has to be set to set 0-10 and PWM ? Also where can we find more details about GRBLHal used in the X32 if I want to compile my own bin file ? I check in github , but I have no reference to parameter higher than $132
Found after I setup my parameter as per your instruction 0-10 is now working using the tool option in the openbuilds control thank you
