Problem getting the right parameters on a VFD

[Robert GrahamParticipant @robertgraham80849]

I am refurbishing a planer/thicknesser with 2 off 3 phase motors. The main blades motor is straight forward as it can be converted to delta configuration and driven easily by a VFD at constant speed.

The thicknesser part is less easy as it is a combined motor gearbox assembly and the motor is a 3 phase one that has 6 wires to it and can be switched to 3000 or 1500 rpm. That is really not where my problem lies in that I have another VFD to drive that.

I want the VFD controls to be on the planer with that for the thicknesser being my headache as I can get the drive speed to be varied by 5K variable resistor – that works OK but I cannot get the VFD to start with the external switch. Works OK on the panel controls, but not the external one.

There is nothing on the A3 size instructions sheet that identifies this VFD to a manufacturer, but I found by good luck this website that effectively has the identical instructions and a picture of the control panel on my VFD.

https://www.manualslib.com/manual/3411474/Vevor-At1-2200x.html#manual

Now if my understanding is correct, page 6 on this ‘Manual’ tells me to use a momentary switch to take terminal X4 from 5 volts to ground to start it. It doesn’t, and it does nothing.

I’ve set the following parameters according to page 11 of the manual :-

P11 to 2 (External Port); P12 to 0 (inertial stop)

and on page 14 I’ve set P50 to 0 to make terminal X1 invalid, and on page 15 I tried setting P65 to 2 (Power on forward) without that having an affect.

Can anyone help me please !!!

I have both a stand drill and a wood working lathe that run off VFD’s so they don’t normally defeat me.

Rob

[Author]

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