Let the fun begin !!! ???

**PAULRO** · 21-05-2015

at last

**PAULRO** · 22-05-2015

after pulling the little hair i have left on my head and trying everything i thought would improve my spindle issue i have stumbled accross what i think is my issue and solution. i had a single wire run from +10v (bob) to +10v (vfd). when i made off the control cable initially between BOB and VFD i just used 4 core,2 for the PWM and 2 for START/STOP, all sheilded. because i needed another signal for +10v I ran a single cable temporarily to test and this is where i believe my problems stem from. i unknowingly had the single cable next to a power cable and by chance moved it during the spindle running on its own and the problem dissapeared. Now i know why experienced builders keep the VFD outside the cabinet. i didn't realise how sensitive these signal cables are. once again a big thank you to Jazz for the time given in relation to this. everyday is a day for school .

**JAZZCNC** · 22-05-2015

Originally Posted by PAULRO

Now i know why experienced builders keep the VFD outside the cabinet. i didn't realise how sensitive these signal cables are. once again a big thank you to Jazz for the time given in relation to this. everyday is a day for school .

Sorry didn't get back to you last night but I was in workshop late and never got time to look until tonight.
I'm relieved you found something because I couldn't see anything wrong with Mach setup and come to the end of what I could suggest.!! . . . Next step was a ferry ride to Limerick.!!

Grounding and silly Wiring issues are probbaly THE most common cause of premature Hair loss.

**JAZZCNC** · 23-05-2015

Ok it occured to me last night in my sleep that noise on the 10v signal still wouldn't make the spindle Spin if the relay was working correctly.
So I still think you have some issue with the relay not being set correctly. The 0-10v signal just defines the speed reference it's the Run signal and relays that controls whether the spindle turns or not.
I think relay is not being controlled correctly and the run circuit is still closed. Mach stops sending a speed reference when M5 or spindle button is toggled off but the noise on the 0-10v line is causing the spindle to still spin because the relay circuit is still closed.

So only thing I can suggest now (other than you've not wired it correctly which I'm sure you have.!) is that the BOB is some how taking over controlling the relay duty's and because in Spindle setup you have the Relays enabled your getting conflicts.
I suggest to test this theory you put the VFD back into using the on board speed control PD002 = 0 and leave the Start/stop to set to external control. (make sure the vfd speed reference is set above zero for this test) I think you will find the spindle starts again and won't stop and you can't control it using F5 which if was correct it would.

If I'm correct then try disableing the relays in spindle setup and see what happens.?

**PAULRO** · 25-05-2015

i thought i had it all sorted so i tried to calibrate spindle from '' FUNCTION CONFIG'' tab. but it now has a different issue / maybe the same one ........
so i tried as suggested ... PD001=1, PD002=0 .. Result is spindle running at top speed with no control from F5, or the '' SPINDLE SETUP '' tab in ports 'n pins.
the ''DISABLE SPINDLE RELAYS '' or the ''MOTOR CONTROL '' box cannot control it either. i can, however turn of the relays from the '' OUTPUT SIGNALS '' tab using the '' ACTIVE LOW'' or '' ENABLED'' option. so MACH3 can control the relays from here .
what has me puzzled now is that i have used the'' MDI'' tab to input M3 S2000 and the spindle runs once i hit ''enter '' on the key board or the spindle CW F5 . the VFD shows a reading of 20,904 on its window but the DRO for the spindle speed does not change. the '' RPM '' value in MACH 3 has never updated since i got the spindle running . when i turn it off and on again '' Spindle CW F5'' button or F5 from the keyboard then the led on the BOB for the PWM controlled relay 3 comes on , but doesn't burn as brightly as the start / stop relay led. the spindle will begin to run at 280 RPM (VFD readout)

if i then hit ''RESET '' on the spindle speed window the spindle turns on fully and the led for the ''PWM '' relay3 burns brightly. this really has me puzzled.
RELAY 3 is controlled by LPT pin 14 dedicated for PWM. i cannot turn this relay off from the output tab in port & pins .

**JAZZCNC** · 25-05-2015

Ok well this confirms my suspicion that you are not correctly in control of the Relay outputs.

First of all you don't calibrate the spindle with Function Config. Set it back to defaults and leave alone.

To sort this your going to have to take a few steps back and deal with one issue at a time. So Forget the speed control for the moment We'll come back to speed and setting it up control later.
Leave external control turned off in VFD, just control speed thru the VFD for now.

Lets concentrate on getting control of the outputs that turn on/off the relays.

First I need to know the position of the Dip switches on the BOB.?

**PAULRO** · 25-05-2015

i have PD001=0 , PD002=0. FUNCTION CONFIG. CALIBRATE SPINDLE = DEFAULT.

DIPSWITCH SETTINGS...
SW1=OFF
SW2=ON
SW3=ON
SW4=ON
SW5=ON
SW6=OFF
SW7=OFF
SW8=OFF
SW9=NOT USED
SW10=NOT USED