VFD Has defantly blown up now!

[magicniner]

That'll be fun if the motor gets warm, within spec, just fairly warm for a motor ;-)

Check out the glass transition temperature of PLA, that's why it's not suitable for stuff on your car dash ;-)

[charlieuk]

That'll be fun if the motor gets warm, within spec, just fairly warm for a motor ;-)

Check out the glass transition temperature of PLA, that's why it's not suitable for stuff on your car dash ;-)

After 3 year I have never had the spindle get even remotely warm even when I once found the water pump to have stoped, it hardly rises above ambient temperature and im quite often doing 8h tool paths however it no suprise as it only cutting polystyrene so not exactly working hard. Should it ever become a problem I'll just print it from something else. I have actually thought of a new idea to improve it and to work with the cable support so I will probably swap this one over but I will still just use pla it's more than adequate for the job on this machine

[charlieuk]

To keep all thouse happy I put a extra clamp on the cable tower and then I re made the cable support now that I have the printer and swapped it over quickly this eve.

I have allso switched on and all seams ok other than the control not working from Mach3. I have a signal going to the motion controller but the vfd doesn't respond so I'm guessing there it's in the programming which I will look for tomorow.

[charlieuk]

Ok all up and running now and I have control from Mach 3 ( I set 001 to no.1) however if I want to bump the spindle speed up with the up arrow nothing happens. I'm assuming 002 needs to be allso changed to the same ie no.1 set by external terminals?

[routercnc]

Ok all up and running now and I have control from Mach 3 ( I set 001 to no.1) however if I want to bump the spindle speed up with the up arrow nothing happens. I'm assuming 002 needs to be allso changed to the same ie no.1 set by external terminals?

It's been a long time since I set mine. Away from machine so will need to check later.

On the strain relief grommet - can the cable move about independent of the spindle? If it can it really needs to give a gentle flexible support to the cable so it does not flex in the same place. Instead the cable should curve gradually to spread the stress out. Otherwise with repeated movement the cable itself may break where it exits the support bracket. You can either design a new grommet (mk3 !) with some gradual flex element as you move away from the spindle, or buy one of these:



Top right end clamps either side of the spindle end plate
Bottom left end is the spring element providing graduated support

But if it exits the spindle and goes into an energy chain (which is also supported at the spindle end) then I think you are OK as you are as this will act as the spring flex element.

[charlieuk]

The cable runs up and through the inside of my z axis And every axis has cable chain. The cable comeing from the spindle does not ever move other than vibrations, the blue tube is silicone so that should take the point load of the joint and dampen vibrations. I would have thought if I were to get a failure now it would be in the cable in the chain that is constantly moving,how long are cables expected to last? I agree if the wire was just going straight up to were ever and no chain it would need more but I'm not sure why anyone would do that.

[charlieuk]

I tried all the settings in program 002 and still don't seam to have control over the speed via Mach 3 only on and off.

Is there maybe something else as well that needs to be switched at the same time?