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View Full Version : Fitting a pot to a Chinese Spindle VFD



Clive S
08-04-2014, 06:06 PM
Not sure if this has been covered. I have just fitted a pot 10K lin part No. 263-3034 from RS. about 1.70 to the space on the clip out display . If this is removed there are 4 screws on the back then you can see the PCB where the pot should be. The pot will fit straight in with no modification's .
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The VFD has to have the parameters changed PD002 from 0 to 1 and PD070 from 0 to 1 (changes analogue from 0-10 to 0-5) without this the speed only goes up to 12K.
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I also changed PD011 from 0 to 55 (this sets the lowest speed to 3.3K)

There is a jumper next to the large connecter strip on the right hand side (marked V1/VR) by default this is set to V1 it needs setting to VR so that the pot will function.

I think there is a sticky on the forum somewhere where a list of the general settings are kept could this be updated if its not already done. Hope this is of use to someone. ..Clive

EddyCurrent
08-04-2014, 10:36 PM
Clive, it sounds like a neat and tidy solution, as an alternative you could have connected a pot to the 0-10v and analogue input. I did this with my pin router but used a 10 turn pot with a scale dial to get precise speed control, not that you actually need it to be so precise. It also means you can mount it remotely if required, such as on the front of a panel.

dial similar to these http://www.digikey.co.uk/product-search/en/potentiometers-variable-resistors/scale-dials/262578?WT.srch=1&WT.medium=cpc&WT.mc_id=IQ62046885-VQ2-g-VQ6-26639244386-VQ15-1t1-VQ16-c

Clive S
08-04-2014, 11:38 PM
Clive, it sounds like a neat and tidy solution, as an alternative you could have connected a pot to the 0-10v and analogue input. I did this with my pin router but used a 10 turn pot with a scale dial to get precise speed control, not that you actually need it to be so precise. It also means you can mount it remotely if required, such as on the front of a panel.

dial similar to these Invalid Request (http://www.digikey.co.uk/product-search/en/potentiometers-variable-resistors/scale-dials/262578?WT.srch=1&WT.medium=cpc&WT.mc_id=IQ62046885-VQ2-g-VQ6-26639244386-VQ15-1t1-VQ16-c)
Yes Eddy I was aware of those pots but I did a bit of research and I deemed it unnecessary to have such precise control over the speed as soon as you set the speed and start cutting I am sure it will change. I find it very easy to adjust the speed to within a couple of hundred revs. My VFD will be outside of my control box, but next to it on the wall. For me the 1.70 spent saves me keep messing with the controls on the VFD ..Clive

dcrowder
22-03-2016, 02:59 PM
All done and for only 75p - best value addition to my setup :)