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 . :livid:
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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 . :livid:
can you give the spec. of the pump you use and i'll get it as a back up ?
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 .
Don't what ever you do put anything between the VFD and spindle to break the circuit ie: Contactor or relay. You will damage the VFD and Spindle.
If you want to play on the safe side then put the VFD power on a timer relay and put this in series with the E-stop.
The E-stop signal back to the control will switch off the Spindle in software when it see's E-stop or put the Run signal from vfd thru NO contact on your E-stop relay for safe measure so not relying on software. The Timer relay will allow time for the spindle to coast to a stop before dropping power to the VFD.
This is the safest way.
Personaly I'm ok with Just putting Run signal thru E-stop contact or Relay in series and leaving VFD under power. I Never leave turning off anything to Software.
Regards the Water pump I bought last ones off Ebay and they where about £15. Can't remember seller name, it was China Job but if get chance I'll take a look.
thanks again Jazz. i will organise a delay off timer for that circuit . just to double check a few things with you......
1... the run signal( from VFD) is the ''FOR'' signal from the BOB relay.
2... the PWM connector on the BOB has 3 terminals, +10 v , FIV, GND.
i'm only using the FIV & GND terminal to connect to the VFD.
the +10v terminal remains unconnected?
this side of the build is new to me so i'm being extra cautious !!!!
Yes Take wire from FOR and run thru the BOB relay contacts and back to DCM on VFD.Quote:
Originally Posted by PAULRO
Caution is Wise policy if your not sure.!Quote:
Originally Posted by PAULRO
The +10v is used to provide the reference voltage if you want to control the speed with a Pot (Potentiometer). You don't need it because the BOB provides the reference voltage. (FIV)
I have noticed that when any of my ,X,Y,Z, limts are triggered MACH responds with a ''PLCM limit reached '' under the reset button . the ''M2 -- LIMIT'' led , flashes briefly in the diagnostic tab under the ''Z'' column and my motors also loose their hold on the axes. when the ''A'' is triggered i get the same result but M4--LIMIT'' flashes in the same column .i 'm at a loss at this stage because i thought that the motors would hold their position and that the leds would stay on. i was about to wire in the overide for the limits and the control for the VFD but i will hold off until i sort this out. if any one can shed some light on this it would be greaty appreciated. i have checked the wiring and the ports and pins settings and everything seems in order. this has me stumped.
It's been awhile since I played with PLCM but will probably be the PLCM disableing the motor outputs when it see's a limit trip. Check to see if the plug-in as an option to leave motor outputs enabled.
Not sure what "Z" Column your meaning thou.?
sorry, i mean the 3rd column over from the left in the'' input signal current state''. i'm not too sure about the plug in for the motion controller, the paperwork doesn't mention an option to leave the motors enabled.
I have checked mine this morning ( I also use the PLCM) and indeed it does release the motors when hitting a limit switch when jogging. So you always have to re home. I would of course not hit the limits in normal use because the soft limits are set to just inside the switches. (unless of course the machine was losing steps) ..CliveQuote:
Originally Posted by PAULRO
thanks for that Clive, at least that's cleared that up for me. is there any chance you could check a few things for me on your controller?
1...does the ''PACKET'' led flash constantly when MACH is reset?
2... the power led is on constantly
3... the connect led is also on constantly
4.. the e/stop led comes on when an e/stop is pressed.
i have 3 inputs wired in to the BOB currently
1 .. e/stop .. N/C
2... A slave N/C
3.. X,Y,Z, in series N/C
The relevant leds are on , on the BOB, my ports and pins are set correctly( they stop the M/C when triggered). but they only trigger briefly on the diagnostic tab. how are yours set up?
Don't worry about the Diagnostics Led's. It's working as it should and thats all that matters.Quote:
Originally Posted by PAULRO
External motion control cards take certain duty's away from Mach3 and do it there way. This is why your motors drop out when limits are pressed. PLCM as taken over the duty's of watching the Inputs and won't be reporting this back to Mach constantly. You may find the PLCM software as some way to identify any active I/O.
Homing is another area that the controller takes over doing so don't be surprised if it doesn't work like Mach3 manual says it should. Mach3 by default assumes your using the parallel port which is completly different kettle of fish.
So long as the machine goes where it's told and behaves it self then don't fret if it does some things different to how Mach normally does it. You'll often find external motion controllers do it better anyway.
that's a relief Jazz , i'm nearly finished with the wiring side of things and then i notice these discrepancies. you hit the nail on the head with that assessment of my last evening. i was trying to get it to behave as per manual / video !!!
i have another query , if you don't mind , i powered up my spindle manually from the VFD yesterday morning and it went well , i'm very happy with it . in fact when i press stop on the Vfd the spindle stops from top speed within 2-3 secs. i have seen clips where it coasts for a decent amount of time before stopping . so once again am i making a wrong comparison?
This is simply that they have a different deacceleration setting in the VFD. Change the Accelleration and de-acceleration parameter to suit your liking. I think it's PD 14 & 15.Quote:
Originally Posted by PAULRO
Don't have it stop too quick otherwise it can trip the VFD when using large cutters.
cheers for that Jazz i'll play with it some more , i have the homing set up and tested and all is in order. each axis stops on the money each time. i have the overide with buzzer wired into BOB ( overide X,Y,Z, input) i engaged ''Z'' axis to trip and ''Y'' axis to trip and the overide worked a charm but when i tried the same for ''X'' and slave, the overide has no effect. i have '' HOME SW SAFETY '' unticked and '' and HOME SLAVE WITH MASTER'' unticked. any suggestions?
How have you got the limits working.? Are they just stopping the control/Mach3 and not physicly dropping anything out using relays etc.
If so then all you need to do is set Mach option for Auto limit override. Then when limit trips you just reset mach and Jog off the swithc.
You don't need to wire a Switch or use an input to override so not quite sure what your doing here.?
just stopping MACH 3 , no relays involved. where will i find auto lomit overide? spoke too soon , found it! cheers for that
i have the homing set up , i think, but after reading a thread here about auto squaring the gantry i think it still needs tweeking. i think the ''X'' and ''A'' slaved are homing together and backing off together. . i thought that when ''X'' home is triggered it backs off and then ''A'' home sets itself the same way?
Yes and no.!! They both move together and which ever axis comes across a swithc first it then stops and backs off and the other keeps going and does the same.Quote:
Originally Posted by PAULRO
When you have the switches set exactly together then it's seemless and you'll struggle to see this happen. If you want to see it happen then move switches further apart. Beware thou it will twist gantry so it's a good idea to remove motors or drive to ballscrews etc to see it happen.
Limit overide is here.
Attachment 15361
PaulroMine are working like yours as Dean has said it will work different to the manual.Quote:
The relevant leds are on , on the BOB, my ports and pins are set correctly( they stop the M/C when triggered). but they only trigger briefly on the diagnostic tab. how are yours set up?
.
Regarding the homing you can adjust the racking by adjusting one of the homing switches until it is correct. X and A will back off the switches independently, it is hard to see when the gantry is square. But if you want to see it happen remove the belts (if you are using them and the are not direct drive) and put a maker tape on each motor pulley and then home the x axis if you then trip one switch the motor will reverse and stop when you release it. The same will happen to the other side. ..Clive
Some Yorkshire man beat me to it:barbershop_quartet_
Got to get up early to beat a Yorkshire pudding.!!Quote:
Originally Posted by Clive S
spot on , CLIVE /JAZZ, i spent a good bit of time initially setting up both switches square so it does look like it's not happening. i must try taking off the belts and using tape as suggested. good one .
i have 2M of 22 awg screened 4 core that i had set aside for the VFD control signals between BOB and VFD, This is the equivalent of 0.3 squared . i just read the VFD manual and it reccommends 0.5 squared . i can't get 0.5 squared locally . i'm about to give the 22 awg a try but would like to know what would the experienced heads use or have used?
For the control cable this will be fine. ..CliveQuote:
Originally Posted by PAULRO
cheers Clive, i'll tackle that later.
i'm in a spot of bother with the mach3 spindle control. i have wire the BOBto VFD as follows,i have set up the various ports, pins ,outputs as follows, when i turn on m/c the spindle starts up and i can't turn it off until i do a reset from mach3. i can then go to the output signals tab and turn on active low for output 16 and the spindle will turn on. i can toggle it on and off from this tab. i have tried to set the various related ports and pins, on/off, but i still get no joy. any help would, at this stage be appreciated:jaded::jaded:
well , i have at least got the spindle running and stopping (the correct way)) from the reset button in mach 3. i emailed Gary @ ZAPP and apparently i need to wire in 10 v from the VFD to the BOB. i'll give it a go.
Do the relays have NO & NC contacts and you have wired to the NC contact.? This cause spindle to start when Mach is reset because the Enable will activate the outputs and because you have wired to NC the circuit is made straight away.!
i changed that and now it works correctly but the moment i take mach out of reset the spindle starts and i cannot turn it off . the spindle CW F5 button has no effect and i can only turn it off by putting mach into reset. i cannot adjust the speed also ii appears to run at top speed.
No using Reset is not the correct way to start/Stop spindle.Quote:
Originally Posted by PAULRO
I also think Gary as got this wrong. The 0-10V signal is generated by the BOB you don't need the 10V from VFD.
I'm a little busy at minute but I will look at this for you later.
cheers Jazz.
Ok well looking at the manual again then Gary is correct and you do need to supply the Bob with 10V for speed control, which is poor IMO but not a problem.
Regards the Relays I think you may need to change SW1 to Off and work in Enable Mode not Charge pump mode for the Relays to work correctly.
The manual isn't very clear on this but that's what I think it's trying to say.? . . . . Give it a try and see what happens.
The way the Spindle should Start & Stop is with issuing M3 for CW, M4 for CCW and M5 to stop from G-code or MDI. Or with on screen button or F5.
I think the service is slipping Dean,:yahoo: expecting people to wait one hour. ..Clive
It's not my fault Pizza man is slow driver.!!!!Quote:
Originally Posted by Clive S
your making me hungry now. time to get a pizza on,if threre's any left. cheers jazz
i 'm having no success with the spinde control from Mach 3 . i think i have all the settings correct . i have looked online for a basic run down of the set up because i'm a complete novice but cannot find a suitable '' VFD to MACH 3 '' for dummies!! if i could at least get my basic understanding of how the various bits communicate and interact i might be in a position to fault find further , so i'm going to list my understanding of how i think it all interacts and hopefully if i am wrong or have left any thing out i can be put straight...........
1 ... change PD001 from 0 to 1... on VFD
SPEED CONTROL
2...connect GND from XP24(PWM on BOB) to ACM GND on VFD
3... connect FIV from XP24( PWM on BOB) to VI on VFD
4... connect +10v from XP24 to +10v on VFD.
the 10 v signal is from VFD to BOB for speed control. (courtesy of Jazz)
START /STOP
5... relay on BOB ( COMMON TERMINAL) to DCM on VFD
6... relay , BOB ( N.O. ) to FOR on VFD
MACH 3 OUTPUTS
i had 3 outputs left from 12 on the XP21 ( LPT PORT) pinout
I used pin 14 for the PWM (output 1) and pin 16 for RELAY 1 ( output 2)
here is my spindle set up
output signals set up ,
ouput 1 = port 1, pin 14 , active high
output 2=port 1 , pin 16 , active high.
( if i toggle the active high to active low on this output, the spindle comes on .:nightmare::disillusionment::subdued:
my motor ouputs tab is a stumbling bolck for me , should i enable the spindle ?
i have it enabled on this tab , step pin 14, i don't know what DIR PIN to use because i have only 1 output pin ( 17) left and that's a relay .
is this my problem . thanks in advance
I've just been chastised on the phone by Clive S for letting my level of response drop to a below an acceptable level. . .:thumbdown: . . . . Very sorry.!!:hysterical:
Give me 20 mins and I'll try to make sense of what's happening or not happening and suggest a few things.
Tell me whats happening or not happening as of now.? Does the spindle start/stop when you push spindle CW (F5) button.?
no , the spindle will only start if i tick the active low setting of the start relay ( pin 16) on the output tab. then it starts before i get to apply the changes to that tab ??? if you follow my drift? i have tried an m3 , S2000 , on the MDI TAB and if i toggle the spindle button (F5) The buttons blinks intermittently , but nothing happens, the output signal current state on the Diagonistic tab binks on / off also...