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Inverters and stop switches

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I.M. OUTAHERE11/11/2019 19:41:07
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Posted by old mart on 11/11/2019 17:42:09:

I looked up the instructions that XD351 posted, and they look right. Unfortunately all my attempts to save them to favourites has failed. They are the usual poor quality expected from VFD manufacturers who expect only electrical engineers to read them. The only external device I could make out on the circuit diagram is a potentiometer.

My advice to anyone thinking of getting a VFD is to look at the Inverter Drive Supermarket site, and select one which has their own quick start guide and avoid all this trouble.

You may have to do a screen shot and save the image .

I think the reason they don’t show any external components except the pot is the pins X1-6 are configurable for many different inputs so they simply show them as switchable and as the switches shown are open this tells me a normally open Momentary contact switch that pulls the pin to ground to activate it . The pins for the pot are dedicated so they show that component with its value .

Noisy fans are a common issue with these inverters and i have seen one youtube video where they changed the fan - simple job one might think but he ended up having to disassemble the entire unit to get the fan out !

You could possibly disconnect the noisy unit and rig up some big pc case fans that come on with the mains power .

Brian H11/11/2019 19:56:22
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Posted by Ian P on 11/11/2019 19:21:35:
Posted by Brian H on 11/11/2019 17:57:54:

XD 351

Is it fan noise you can hear from the VFD?

Ian P

Hello Ian, yes, it's fan noise, but I can live with that as the mill will make more noise at cutting speeds and when it is cutting.

Thanks for your help, it's most appreciated.

Brian

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