Yep, I wired them together and tied into VDD…
I have a 110V ATX power supply (original to this old HP computer case, which I spliced into the 110V in the power supply, to a second switch to my Stepper power supply, so I turn on one switch (ATX) first, then second switch (Stepper power supply) at the back of the case.
Going that way grounds everything… all negatives are grounded, case and all.
So, would I wire the enable pins to the drivers to the board to connect to my VFD?
What size PSU?
Oh you already said ATX
I used one initially when I started working on the board, but I feared it would eventually fail so I just bought a 5v PSU and separate 48V 10A PSU.
That should work out ok for your power supplies… how many amps for the 5V?
5Amps
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If yours is the V2, this looks like exactly how mine is set up, but for your board… only thing different is I never hooked up the Enbl- to anything… ENBL+ to VDD so motor is always “Ready”, there is a built in switch#4 that halfs the power to motors when not used, but still keeps it energized so you don’t miss steps or dropping the Z axis if it’s heavy
That should work good for your switches and everything else. I’m not positive in your situation as to your spindle hookup… I’m only running a 1 1/4HP Makita RT0701C (Laminate trim router) for a spindle. Here’s the pic I found of your board…
Yes, I tried it like that on Mach4, but it didn’t work. Should I try to install mach3 instead?
You do have your pins enabled for high or low (depending on which way you’re hooked up to the BOB, in Mach?)
Yes. For my first profiles, all but the Estop were on high. The tech guy had me download a profile that supposedly worked with ST-V2 and most were active low. I still don’t know what they are and what the difference is. The only thing I was informed of was the Estop needed to be active low and only to correct it on the ESS plugin.
I’ve been using Mach3… haven’t tried 4 yet, I’ve tried LinuxCNC, can get it to move with that good too, but haven’t tried any cuts with LinuxCNC untill I get limits put on and then I’ll try it cutting and also try my Arduino wired into my BOB using GRBL… see how that goes, if it works, I’ll try to get a ESP8266 on the Arduino and see if I can go wireless (I’m hoping!)
How do i determine if i should use active high or low?
I think I see a tutorial page related to my BOB and that active low active high. Is that what they are calling the charge pump?
No, a charge pump is basically as near as I can understand a mini relay to actuate a bigger relay… if your BOB is only putting out say 2.2V, and your main relay needs 5 volts to actuate, it’ll boost your small voltage up to the bigger one to actuate your bigger relay… in a nutshell that’s basically what I had to do to get my relay to work… you shouldn’t need a charge pump on yours, as your relay on your board should work fine with what you have. Because my BOB would only put out 2.2V, and my relay runs from 3 to 25 volts to actuate, I just used a transistor to switch my available 5V from my ATX power supply to turn on my relay… only problem with mine is that my BOB will put out a slight bit of power as soon as my ATX power is turned on, until I get Mach 3 running, then turn on my ATX power to my BOB, then it stays off until I enable my spindle or start a cutting job.
If you wired in like how I did, I had to configure my pins in Mach to high in order for it to send the step/dir signals -try active high, and if that doesn’t work, try active low
Now I’m not familiar with a VFD setup, as far as I know, I believe you need to run a PWM signal to your Inverter for your speed, and a Enable pin to somewhere on the Inverter to enable the spindle… like I said, I’m not familiar with that part (yet! In the future, I’ll look at getting a real spindle!)
I always thought a VDD was like a VFD in turbo/on steroids. What is a VDD?
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