vfd question

[argon blade]

has anyone added a variable frequency drive to thier taig? and if so which one and how much was it?

i really want to be able to use m-code to start and stop my spindle...

is rapid tapping an option when using a vfd?

[Jeff-Birt]

You don't need a VFD to start and stop your spindle through M code, just a relay. Also, you must add the VFD (speed controller) and a new motor to have variable speed. I just built up a system for someone like this.

If you add an index (tach) sensor to the spindle and supply that back to Mach it can sync axis movements to the spindle to do single point threading.

[M250cnc]

You would need a servo motor for Rigid tapping and it's not currently supported in Mach but yes in EMC 2

Phil

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[argon blade]

You would need a servo motor for Rigid tapping and it's not currently supported in Mach but yes in EMC 2

Phil

i do have a copy of emc 2 but i have not really played with it



Sent from my HTC Desire using Tapatalk

You don't need a VFD to start and stop your spindle through M code, just a relay. Also, you must add the VFD (speed controller) and a new motor to have variable speed. I just built up a system for someone like this.

If you add an index (tach) sensor to the spindle and supply that back to Mach it can sync axis movements to the spindle to do single point threading.

do you have a part list i could see jeff?

[awerby]

to turn your spindle (and one other 110v appliance, like a dust collector or coolant pump) on and off with M-codes. They call it the "spindle and auxilliary control module, and it's listed on the Microproto site for $100: MicroMill 2000

I don't know of anyone who has gotten rigid tapping to work on a Taig, but I guess it's not impossible. Thread milling would be a lot easier, though, with the right software.

Andrew Werby
ComputerSculpture.com — Home Page for Discount Hardware & Software

[fretsman]

You could actually build your own relay box with this very well done tutorial:

Tom Benedict Builds a Relay Box for His Taig CNC Mill

Dave

[argon blade]

You could actually build your own relay box with this very well done tutorial:

Tom Benedict Builds a Relay Box for His Taig CNC Mill

Dave

that is a great tutorial....
i was thinking along those lines

i have 2 relays left over from another job
only problem is that they are 24v dc triggers and 300v 10a through voltage.

im pretty sure that the power supply is putting out 48v ...but im not sure whats coming out of the gekco 540.

page 6 on the 540 manual shoes a relay power supply but gives no voltage
page 3 says the analog output to the vfd is 10v (it does not say if its ac or dc) and gives no info on the output for the relays
any thoughts or suggestions?

[Jeff-Birt]

The relay outputs on the G540 do not output a voltage, they switch to DC Common. You wire the relay coil between the +V of your power supply and the G540 output. The G540 output switches to DC Common and the relay is energized. You can use any voltage relay as long as you have a matching power supply for them and wire the DC Common of the G540 power supply and the relay power suppl together.

[argon blade]

The relay outputs on the G540 do not output a voltage, they switch to DC Common. You wire the relay coil between the +V of your power supply and the G540 output. The G540 output switches to DC Common and the relay is energized. You can use any voltage relay as long as you have a matching power supply for them and wire the DC Common of the G540 power supply and the relay power suppl together.

ok im going to have to read that a few times! i get the concept...but where the actual leads go...hum? on my relay (rh4b-u) pin 13 is labeled negative and pin 14 positive. im confused do i hook the relay power supply +vdc to the - negative on the trigger for the relay? or is it the other way around?

i guess to sum it up im looking at page 6 of the 540 manual what lead on the relay (+ or -) is hooked to the +vdc?

thanks again jeff