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Author Topic: VFD  (Read 1139 times)

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Re: VFD
« Reply #10 on: March 12, 2026, 04:15:51 AM »
When i load Machpro and turn on VFD , my spindle turns very slowly ( 2.37 hz ) , can stop it with vfd stop button


    Ed
Re: VFD
« Reply #11 on: March 12, 2026, 09:33:47 AM »
Speed values are more of a persistent value for Speed commands. If your S value is 0 and your spindle still spins a little, then the VFD further setup.

You can increase the value of P4-13 for the minimum voltage input for a speed command. This will make a bit of a deadband in the case of residual electrical noise. I would set my spindle speed to 0 and then check voltage at AI1 this value should theoretically be zero. If you have voltage there, set P4-13 to the number you see on your multimeter, this will create a deadband from zero to whatever number you insert causing your spindle to stop moving.
Thanks,

Paul
Re: VFD
« Reply #12 on: March 13, 2026, 10:26:48 AM »
It is set for 0v and there is 0v at A11 when it is turning slow . Is there a job timer on the main screen for the tine it took to run the file , like on Mach4
Re: VFD
« Reply #13 on: March 13, 2026, 11:02:08 AM »
Attached is a quick and dirty wiring diagram. https://es.soyan-tech.com/Content/upload/PDF/20189675/SVD-p-User-Manual.pdf Here is your manual.

When it comes to your VFD, when in analog mode, it looks for 2 things. A forward Command and voltage in DI1 for your "Speed". I would recommend trying to increase that value to something like .1 or .2 to cover any potential residual voltage.

When it comes to tracking cycle time, look up in your upper right hand corner of your screen next to the date and time.
Thanks,

Paul
Re: VFD
« Reply #14 on: March 13, 2026, 01:04:00 PM »
You had me move fe  fc from spindle connector to J11, no wire on  D11 vfd term
Re: VFD
« Reply #15 on: March 13, 2026, 02:06:06 PM »
If you do not have a Di1 connected, how are you getting a spindle forward command? Di1 should be connected to something like the FE for an optocoupler or it should be connected to HwEN to be controlled by a physical relay with the other side of the circuit coming from 24v that is provided by the VFD. On our last call, I thought we had a spindle forward command working along with Speed Control?
Thanks,

Paul