Let the fun begin !!! ???

[JAZZCNC]

i will surely find the sweet velocity and acceleration values when machining different materials. cheers for that.

Don't be in a rush to go too fast regards Velocity. Overtuning the motors is very easy and will result in lost steps and positional error if over done.
Also it doesn't always make for faster cycle times depending on type of work your doing.

Keep in mind you can't have both High velocity and high Acceleration.
The best setup is having a nice balance of both for general cutting. ie: Larger work, profiling etc.
Then make your self a separate profile for jobs such as 3D or fine detailed work and tune the motors more biased towards acceleration and lowering velocity. This will shorten your cycle times as often these type of jobs make lots of small moves where they very rarely reach the actual commanded feedrate before having to slowdown again for direction change. Having the acceleration higher and sacrificing velocity allows you to reach a higher feed that is closer to the commanded feed. On some jobs like 3D work and engraving that can have hundreds thousands lines of code this can dramiticly reduce cycle times.

Slowly creep up on the motor tuning rather than try to sprint from the start and only adjust one setting at a time then test by runnign some G-code not just jogging. ie Only adjust velocity or acceleration never both together.

[PAULRO]

excellent info jazz, i'm still playing with my new toy hoping to get the homing done today at some point. i'm waiting on a pump for my spindle so that gives me a bit of time before i get to that end of things. i hope to fit and wire the spindle today at some point but i see the missus making a list of jobs around the house so i'll have to go missing.

[PAULRO]

it's time to wire my spindle and inverter so i could do with some guidance. i have read the threads and hope my understanding of what's required is up to scratch. i have the Huanyang HY02D223B VFD and 2.2 KW spindle. i have the VFD wired 220 vac to '' R & T'' on the input side. i have the spindle wired with 4 core 1.5 mm2 with the earth soldered to pin 4. i tried to undo the back cover of the spindle to get an earth to pin 4 on the spindle side of the plug but met with resistance so i read the threads again and realise i will more than likely have to reseal the back flange once disturbed. so i'm thinking,leave well enough alone and maybe i could take a seperate earth from the spindle bracket back to my VFD earth terminal and save myself the hassle of uneccessary resealing.
this then leaves the wiring of the spindle to the inverter. wires 1,2,3, to U,V,W, and earth (as mentioned) .
so my BOB has a PWM input but i want to become more familar with the inverter and the manual input side of things and maybe in a couple of days when i'm up to speed with the VFD then introduce the PWM. this is the slow approach to the set up but i'm waiting on a pump for the spindle so i have the time. so my question is as follows,.. am i better off to power the VFD and set the parameters without the spindle wired in or does it matter?

[JAZZCNC]

so my question is as follows,.. am i better off to power the VFD and set the parameters without the spindle wired in or does it matter?

Doesn't matter it won't hurt the VFD if spindle isn't attached. I do this all the time.

Don't sweat over the earth on spindle. Just make sure you take the Shield back to the VFD Earth rather than the Cabinet Earth just to ensure you don't create any earth loops. Put an Earth wire from the machine frame to the cabinet Star Earth and you won't have any trouble.

Regards the Water Pump you can have the VFD switch it On/off using the Relay. If the Pump is 24v and doesn't draw to much current(<100ma) then you even use 24V on the VFD so it will power pump. This is how I wire.!

You'll need to set mach spindle output for M3 to which ever relay output you use.

[PAULRO]

it's a 12 vdc pump , on its way . should have it this week or next . i should have asked here about the pump spec. before i went and bought it .

[PAULRO]

can you give the spec. of the pump you use and i'll get it as a back up ?

[PAULRO]

i still have to incorporate the VFD & spindle into the estop. i can either have the estop drop out the VFD which will drop out the spindle or i'm thinking just have the estop drop out the spindle and leave the VFD powered. i read that it isn't wise to drop out the VFD if the spindle is powered up and running because there is a good chance of damage to the VFD. is there a recommended safe way to achieve this?
thanks once again to Jazz for the VFD control sketch as that was the next item on my list. i wasn't sure which terminals to use on the BOB PWM plug and the dwg cleared it up .