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I'm really sorry but I don't understand.
I will try to understand because in a second time I will have to configure for 2 spindle speeds with gearchange.comp from andypugh.

so currently my config for the spindle (800rpm) is :

in the ini file :

[SPINDLE_0]
OUTPUT_SCALE = 800
OUTPUT_MIN_LIMIT = 0
OUTPUT_MAX_LIMIT = 800

and in the hal file is :

setp hm2_5i25.0.7i77.0.1.analogout5-scalemax [SPINDLE_0]OUTPUT_SCALE
setp hm2_5i25.0.7i77.0.1.analogout5-minlim [SPINDLE_0]OUTPUT_MIN_LIMIT
setp hm2_5i25.0.7i77.0.1.analogout5-maxlim [SPINDLE_0]OUTPUT_MAX_LIMIT

you suggest as a solution :

setp hm2_5i25.0.7i77.0.1.analogout5-scalemax 3000 (800)
setp hm2_5i25.0.7i77.0.1.analogout5-maxlim 3000 (800)
setp hm2_5i25.0.7i77.0.1.analogout5-minlim 0

isn't it the same thing?

and I use the abs function for compute the absolute value and sign of the input signal

net spindle-speed-scale motion.spindle-speed-out => abs.0.in
net positive-only-spindle-speed-cmd abs.0.out => hm2_5i25.0.7i77.0.1.analogout5

is this not correct?

Yes, white wire to AOUT5 green wire to GND

You do not need the scale component, normally you would simply set
the aout5 scalemax and limits appropriately. These may be setup in the ini file
if you used pncconf to create the initial configuration. In any case, something
functionally equivalent to  this is needed:

setp hm2_5i25.0.7i77.0.1.analogout5-scalemax 3000
setp hm2_5i25.0.7i77.0.1.analogout5-maxlim 3000
setp hm2_5i25.0.7i77.0.1.analogout5-minlim 0

(if 3000 is the RPM at +10V)

thank you for your feedback, my VFD is actually waiting for 0-10V. i thought this configuration would allow me to remove the -10V. should i use this procedure for analogout.5 through an ABS component?

#spindle DAC 0-10 control

loadrt scale count=1
addf scale.0 servo-thread
setp scale.0.gain 0.0125
net spindle-speed-scale spindle.0.speed-out => scale.0.in
net spindle-speed-DAC scale.0.out => hm2_5i25.0.7i77.0.1.analogout5

net spindle-fwd motion.spindle-forward => hm2_5i25.0.7i77.0.0.output-10
net spindle-rev motion.spindle-reverse => hm2_5i25.0.7i77.0.0.output-09

I have another question about the wiring of my VFD; below is the schematic of my VFD  

 

should i wire the white wire to aout5 and the green wire to gnd?

Another thing to keep in mind with 7i77, it can output from -10V to +10V, and that might not be healthy for the VFD, probably should send the analogout.5 through an ABS component.

If you are using a recent version of LinuxCNC, the spindle pins have
been renamed, the new names would be:

spindle.0.forward
spindle.0.reverse
spindle.0.speed-out

I'm having trouble configuring my 7i77 board for my VFD 0-10V.
Below is the pin configuration from my hal file and my ini file:

#Settings in INI:

[SPINDLE_0]
OUTPUT_SCALE = 800
OUTPUT_MIN_LIMIT = 0
OUTPUT_MAX_LIMIT = 800

#Settings in HAL:

#*******************
#  SPINDLE
#*******************

# ---PWM Generator signals/setup---

setp   hm2_5i25.0.7i77.0.1.analogout5-scalemax  [SPINDLE_0]OUTPUT_SCALE
setp   hm2_5i25.0.7i77.0.1.analogout5-minlim    [SPINDLE_0]OUTPUT_MIN_LIMIT
setp   hm2_5i25.0.7i77.0.1.analogout5-maxlim    [SPINDLE_0]OUTPUT_MAX_LIMIT

loadrt abs count=1
addf abs.0 servo-thread
net spindle-speed-scale motion.spindle-speed-out => abs.0.in
net positive-only-spindle-speed-cmd abs.0.out => hm2_5i25.0.7i77.0.1.analogout5

net spindle-cw             <=  motion.spindle-forward
net spindle-ccw            <=  motion.spindle-reverse

# ---Setup spindle at speed signals---

#sets spindle-at-speed true

#SPINDLE-CW
net spindle-cw  motion.spindle-forward  => hm2_5i25.0.7i77.0.0.output-09

#SPINDLE-CCW
net spindle-ccw  motion.spindle-reverse => hm2_5i25.0.7i77.0.0.output-10

With this configuration, I have the problem that linuxcnc does not find any motion command.

Pin "motion spindle-foward' does not exist
Pin "motion spindle-reverse' does not exist
Pin "motion spindle-speed-out' does not exist

did i forget to declare something ?

   Hello
I am retrofiting a mill with 21 tool ATC ( CINCINNATI MILACRON 500 ARROW), after a while is almost finished ,a lot of things work ,PB is very nice , relative easy to install and configuring for beginers like me.Retrofit  it s with 7i92+7i77+7i84 , +/- 10 V , same for spindle , keep the original drivers.
 For ATC ,I use parameters 1189+1190 to 2010 in .var file , they are volatile , but become persistent after  activate them(after  restart the tools remain in corousel)
The head is 1/2 ratio from spindle motor , where the encoder is located, and the M19 , orient spindle is work fine , but stops sometimes in good position O degree ,or with 180 degree plus position(the reason is the 1/2 gear) The position must be always O degree for the mechanics of toolholders , so I need some advice how to manage it.
I mentioned that the head has a inductive sensor , wich is active on 180 degree side of shaft and inactive for the rest of 180 degrees side of the head shaft.
I make a few routines in the orient.ngc file that is atached to spindle orient button from ui  , but still not work.
I apreciate if somebody can help me , with advices
Thanx a lot
Denis

So after a ton of research and talking to a few companies, it looks like I'm going with Lichuan servos and drivers, I figured this might be the most cost effective way to get the machine back into operation.

Maybe this has been discussed somewhere and I just haven't seen it, but maybe having a list of a vendors and offerings would be good for newbies like myself so we don't all end up duplicating research on what is available

I picked the 1.8KW, 6NM, 3000RPM motors for the X and Y and the 2.6KW, 10NM, 2500RPM motor with brake for the Z axis, I calculated my moment of inertia for the axes and these seemed like a good fit, they won't be quite as fast as the original motors on rapids, but should be as fast as stock on cutting moves, so I think they will be OK. The other reason I decided to go this route was to convert the machine to single phase 220V so that I won't need to go with a rotary phase converter, which should save several thousand bucks on the retrofit, I think that alone is worth the slower rapids.

As far as the spindle goes, I think I can reuse the existing motor and just operate it with a cheap VFD, I'm looking at the Vevor 5HP VFD. The stock motor is only 2HP, which I think is odd since the manual states that the FP4A should come with a 5HP spindle, but at least buying the 5HP VFD should make it easy enough to upgrade the spindle motor in the future if I decide it needs more power, and with a working CNC, I could have the machine make parts for itself, which is always fun

From my research, the other option for the axes I think would have been to go to 6000RPM GSK motors, but they all operate on 380V 3 phase drivers and are a fair bit more expensive than the Lichuans.

While I'm working on getting the motors ordered in, I need to figure out the rest of the machine as far as how much I/O I'm going to need to control all the various functions and what kind of Mesa card I will need to control everything, so that's my next area of focus.


I need to do more looking around on the machine to see what sensors I have to interface with, but just for the gearbox I'm going to need 9 inputs for the position switches alone, I'm sure there are other things I'll want to connect as well, but at this point I'm thinking the 7i77 card is probably what I'm going to need for interfacing, I'd love to hear input from the more experienced on this though! I understand the 7i77 should be able to read my Heidenhain scales as well through their 602 EXEs, so that's great!

Hello everyone,

I am new on this forum so if this is posted in the wrong section, I'm sorry.

I am in the process of retrofitting my SHARNOA SD900. and I would need your help to get my 7i77 card my AZM drivers to work correctly.
I am currently trying to adjust the pid of my axes with the procedure of tommylight "Servo Wiring and Tuning detailed How To example Mesa 7i77." but I have a strange behavior when setting in motion my motors.My encoders work correctly, I have the pulses going back to the board.

At the moment my encoders are coupled on the axes and the motors are uncoupled and turn in freewheeling.

The strange thing happens when I press the key on the keypad to make the motor turn, the motor turns but doesn't stop and when I press a second time the motor accelerates (it feels like it's behaving like a variable speed drive for a spindle) to turn in the opposite direction I have to press 3 times in the other direction to make it turn in the opposite direction.
I would like to point out that when the drivers are powered up, the motor turns very slowly in one direction and always in the same direction, whether connected to the 7i77 card or not.This behaviour occurs when wiring between the /DRSW and COMM terminal. I haven't touched anything on these terminals for the retrofit.

Is the motor behaviour correct? If not, would you know how I can find normal motor behaviour?

Thanks for this and sorry for my English. If this is a little bit unclear, please tell.
Greg

for information : the drivers are in a rack and i don't have any wiring diagrams for them, i only have the wiring diagram written on the side of the drivers.

I use LinuxCNC 2.8.4

 

How can I program M-code to enable and disable hm2_5i25.0.7i77.0.0.output-16?

You could use M64/M65 to switch  hal pins 'motion.digital-out-0N'
linuxcnc.org/docs/html/gcode/m-code.html#mcode:m62-m65
Then you can use and AND component to  connect the relevant 'motion.digital-out-0x' pin and whatever signal you currently use to drive hm2_5i25.0.7i77.0.0.output-16

I can't find the g-code that will send the axis to find a home...

There is no such Gcode, which is why we have to use the M19 spindle orient to 'rehome' the rotary spindle  before we can use it as a rotary axis.

Initial thread starter, as well as my first thread on the forum.

Long story short, I have a MH500C year 1984, 4speed gearbox, have not managed to fully get the Philips 432-control to play along with me, so i plan a retrofit trying to use as much of the original HW as possible. I plan to using a Dell PC & Mesa card(s)...

Some info regarding the machine 
- X-Y-Z & spindle drives are analog +-10V, TRK6(spindle) & 3TRM2(x,y,z)
- X-Y-Z-Encoders are linear("glass scale") analog 11uAPP, will be converted to TTL with eg. EXE 602 to TTL signal
- MPG is present and gives TTL signals 
- Spindle feedback - I have not figured out about the existing sensing system for spindle angle(if any) for tapping cycles.

I´m thinking about using ethernet based MESA hardware, but seem like they are usually out of stock everywhere. 

Some options i have been considering:
-7I97(1+ month waiting time), should handle all of the nesesary signals with ethernet connection to PC
-7I77(no stock)+5I25(is in the process of being replaced)...
-7I83 + 7I95T +7I74 (should be available "soon")
-7I83 + 7I95T + additional PCI based NIC  
-Other suggestions?

Some questions:
-Will 7I74 work connected to my standard parallel port, or do i need something like the 5I25 ?
-Will the additional PCI based NIC card work with Debian/LinuxCNC to communicate with the second I/O card?

Rotary SMP, who did an exellent job with his conversion on the MH400, inspired me to go in this direction. Main difference is that i have a 4 speed gearbox and Indramat 5kW spindle motor. for the first stage i will not make the gear change logic and I/O, just do manual gear change.

 

andypugh wrote:

 

loadrt wcomp
loadrt sum2 count=2
setp sum2.0.in1 0.01
setp sum2.1.in1 -0.01
net o_angle orient.0.position sum2.0.in0 sum2.1.in0
net o_max sum2.0.out wcomp.0.max
net o_min sum2.1.out wcomp.0.min
net o_fwd wcomp.0.under => Use this pin to move the spindle FWD
net o_rev wcomp.0.over ==> and this onw for REV


This will need massaging to fit your system, and is untested.

 

Today try 
net spindle-cw       => or2.2.in0
net o_fwd              => or2.2.in1
net spindlecwall    <= or2.2.out
net spindlecwall    => hm2_5i25.0.7i77.0.0.output-01

net spindle-ccw     => or2.3.in0
net o_rev               => or2.3.in1
net spindleccwall   <= or2.3.out
net spindleccwall   => hm2_5i25.0.7i77.0.0.output-02
Linuxcnc start.
I can still using spindle cw/ccw buttons.
But when start orient spindle dont wont turn. Whatching hal pins and starting orient  only see orient.on without spindle.on or spindle cw/ccw.

I've taken up machining as a retirement hobby and last year acquired a full sized VMC for which I'd like to replace the ailing Semens acramatic controller with LinuxCNC.  That VMC uses Yaskawa servo controllers that can take either analog servo inputs, or step/dir inputs.   The spindle motor takes an analog 10V signal for speed control.    I am under the impression that analog servo control may work a bit better than step/dir, so it seemed that a Mesa 7i97 analog servo controller was a good option. 

Mesa cards have been challenging to obtain, and after checking their store site for about 6 months for stock, at the end of May I emailed them to inquire about availability.  I was told a new card was coming out to replace the 7i97.  I was recently contacted by them and told that the replacement 7i92TM was now available.  So I ordered one.  After reading a bit, it appears that 7i92TM would need a 7i77 break out board to handle analog servos.  The 7i77 is not currently available, so I contacted Mesa sales.  They placed the 7i92TM order on hold and have forwarded my email to their tech support, from which I haven't heard back yet.

So, I'm hoping for some help from knowledgeable folk that might suggest if a different approach makes sense, or do I just need to continue holding?
1) How much difference is step/dir vs analog control going to make for servos?  Should I consider using step/dir for the 3 basic axises, and work up some other solution for the spindle motor control?
2) Does anyone know what Mesa's roadmap is?  There isn't any clear indication on their website of what is going to be replaced, it just shows either out of stock or obsolete/replaced by for many of their cards.  It gets a little unclear what is supported by linuxcnc.  Obviously I'd prefer not to implement something that is immediately obsolete.  
 

Artur_1617 wrote:

I have compressor than make 8bar and drop to 6 before start to load again. Spindle need 6.3bar to unclamp cone.

What is the rated pressure of the compressor reservoir? You can generally adjust the pressure switch to cut in and out at higher pressures.

But, even then, I think that 8 bar is too close to the limit for reliability. Can you use a 10 bar compressor or a bigger cylinder?

I had this problem with my pneumatic drawbar, and re-made the actuator cylinder as a tandem one:

Read all topic with orient but no found setup like mine. Try to mixed all in one but not lucky.
Think the first one orient atached in first post was the best for working with my setup.
I use relay for spindle cw on.       # --- SPINDLE-CW --- net spindle-cw hm2_5i25.0.7i77.0.0.output-01
Can You write me example how turn on spindle orient with turn on spindle? 

Do you plan to orient with only clockwise motion? Is there a physical stop pin?

I have compressor than make 8bar and drop to 6 before start to load again. Spindle need 6.3bar to unclamp cone.
In finaly version of spindle well by atached sensor of finish motion stroke piston.
Now about orient.
Read all topic with orient but no found setup like mine. Try to mixed all in one but not lucky.
Think the first one orient atached in first post was the best for working with my setup.
I use relay for spindle cw on.       # --- SPINDLE-CW --- net spindle-cw hm2_5i25.0.7i77.0.0.output-01
Can You write me example how turn on spindle orient with turn on spindle?