Thread: VFD interference problem
So I unwired everything in the control box. Rewired separating power lines from control lines, and reducing enormously the amount of cables in there by chaining +5V and enable between the BOB and drivers. I now use 2 core shielded cable for the PUL/DIR signals. That made the wiring a heck more simple. Limits are not yet wired, homes neither, and the 24V PSU is not powered. Guess what ? Works like a charm !
So now I'm going to move forward step by step, making sure that each increment does not cause noise to appear.
Things look muuuuuuch neater now :) I'll keep you posted. As for the ferrites, I'll order some of them just as a safety.
Last edited by eurikain; 14-03-2016 at 10:25 PM.
Ok sounds good don't forget the pics..Clive
I hope he means that the enable (-) are being daisy chained from the enable terminal on the BoB and that separately he is daisychaining +5v on the BoB to step(+) dir(+) and enable(+) on each driver (chained on to the next driver and the next and the next). It'll work (Hmmmm ?) but I don't think I would do exactly that.
RobIt takes all sorts to make a world, I am just glad I am not one of them.
Rob is right. No worries, I meant "daisy chained". They each get 5V and the correct amount of amps. Same thing with the enable.
Bad news, I introduced noise again, then rolled back to the state I was in when I posted my first message, and now the noise is not going away. Same thing, though much better than it used it be: in the first second of the spindle starting to turn, as well as the last second before it stops, the steppers move a few steps.
I'll order a CSLab 4 axis motion controller today. Can anyone explain the following to me:
- Zapp Automation sells it for 335 Euros (shipping included) => 0 in stock, have to wait 7-10 more days
- CSLab sells it for 311 Euros (shipping included)
So, obviously I'd go for CSLab official's website.. or does anyone have a spare one to sell ?
1. Is the noise coming from your VFD - which it very much seems to be.
2. Is the propagation back along the mains cable or through the air
The probability is a bit of both. Filters and shielding before spending money on a motion controller.
Last edited by cropwell; 15-03-2016 at 08:52 AM.It takes all sorts to make a world, I am just glad I am not one of them.
I have, really, there's only the drivers, 5V and 70V PSU wired. The VFD is powered completely separately from the control cabinet. It's a different wall socket. Yes, it could be the mains. I need to call my local electronics store for help, I'm really lost now ^^. Can't deal with this myself.
When you say the motors move a few steps when you turn on the vfd are they enabled and the motors locked when this happens?
Last edited by Clive S; 15-03-2016 at 10:18 AM...Clive
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