>From the LinuxCNC manual I see an example :
loadrt pwmgen output_type=0 addf pwmgen.update servo-thread addf pwmgen.make-pulses base-thread net spindle-speed-cmd motion.spindle-speed-out => pwmgen.0.value net spindle-on motion.spindle-on => pwmgen.0.enable net spindle-pwm pwmgen.0.pwm => parport.0.pin-09-out # Set the spindle's top speed in RPM setp pwmgen.0.scale 1800 is this sufficient to get the spindle going ? On Tue, 2017-02-21 at 11:26 -0500, Gene Heskett wrote: > On Tuesday 21 February 2017 07:33:28 Valerio Bellizzomi wrote: > > > Hello, > > the SpinX1 manual says it acts like a potentiometer, the figure on > > page C-13 of the VFD's manual shows the VIA contact to be connected to > > an external potentiometer > > > > is that the right way to connect the spinx1 ? > > Yes, it has silk screened names. Its a totally isolated thing on the VFD > side. The vfd should have a common, a nominally 12 volt plus source when > measured to the common. > > The fwd and rev signals are separated by the spinx1, and generally on the > VFD side respond to a closure to this common to enable it to respond to > the voltage from the "arm" of the potentiometer. On the computer side, > you will need to dedicate on pin of the BoB as an enable signal and wire > it up in the hal file. > > You will need, if using the mesa cards, something that faintly resembles > this to get the LCNC speed signal hooked to the spinx1: > ############################################################## > # Hook pwmgen.00 to the spindle speed and set for PDM output # > ############################################################## > setp hm2_[HOSTMOT2](BOARD).0.pwmgen.00.scale > [SPINDLE_9]PWMGEN_S_SCALE > setp hm2_[HOSTMOT2](BOARD).0.pwmgen.pwm_frequency > [SPINDLE_9]PWMGEN_S_FREQ > #setp hm2_[HOSTMOT2](BOARD).0.pwmgen.pwm_freq > [SPINDLE_9]PWMGEN_S_FREQ > setp hm2_[HOSTMOT2](BOARD).0.pwmgen.00.output-type > [SPINDLE_9]PWMGEN_OUTPUT_TYPE > setp hm2_[HOSTMOT2](BOARD).0.pwmgen.pdm_frequency > [SPINDLE_9]PDMGEN_PDM_FREQUENCY > > The data being referred in the right hand argument to needs assigned > in the [SPINDLE_9] section of your .ini file. > > Now, I don't see below, what breakout you are using so I'll just copy and > paste from my setup. Keep in mind that these will NOT match yours, but > will show you approximately what you need. > First, setup the enable signal which in my case uses a gpio > pin in my 7i90 card. > > First, you need to set the output pins for all axis's used as inverting and > true low, > > # Turn pulses to true low, opendrain so they are closures to ground. > # stepgen 00 > setp hm2_[HOSTMOT2](BOARD).0.gpio.000.invert_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.000.is_opendrain 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.001.invert_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.001.is_opendrain 1 > # stepgen 01 > setp hm2_[HOSTMOT2](BOARD).0.gpio.002.invert_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.002.is_opendrain 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.003.invert_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.003.is_opendrain 1 > # stepgen 03 > setp hm2_[HOSTMOT2](BOARD).0.gpio.018.invert_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.018.is_opendrain 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.019.invert_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.019.is_opendrain 1 > > # the above gpio numbers correspond to the outputs of the canned > code in the FPGA's installed firmware for the stepgens I use, and > the PDM signal from the pwmgen module in the cards firmware. > > And the reason I keep calling it PDM is that is a ditherless > method of getting quite smooth speed signals from a basically > digital circuit. That is done as the modules are enabled in > the .ini file by a line grouping like this: > > [SPINDLE_9] > # 16.6 is close to 100 revs per click in low belt position > PWMGEN_S_SCALE = 16.6 > # make it run in PDM mode, is self smoothing then > PWMGEN_S_FREQ = 1 > PWMGEN_OUTPUT_TYPE = 3 > PDMGEN_PDM_FREQUENCY = 10000 > > # the SCALE above sets it to run the spindle at 100 rpm per > click on the + button, when the backgear is not engaged and > the belt is in the lowest speed grooves of the pulleys. All of > these settings are of course your personal choices. PDM_FREQUENCY > is a balance between update rate and quantization of the speed change. > A lower frequency is higher resolution but it should be fast enough > so the motor speed doesn't ripple. 10000 is a good choice for me > with my fake vfd.. > > sets emcmot.00.enable FALSE > net emcmot.00.enable <= joint.0.amp-enable-out > net emcmot.00.enable => hm2_[HOSTMOT2](BOARD).0.stepgen.03.enable > Thats not all of that stuff, but you'll get the idea. > > A gpio pin is an input unless told otherwise, and all signals > are closures to ground, with 5 volts fed to the + terminals on > the axis motor drivers, with your step/dirs connected to the - terminal > on the drivers control plug. > > ################################################################################# > # Setup vfd drive enable yadda yadda, building down from top down forward > first # > # The SpinX1 only needs pwm and dir I thought, but needs an ena(ble) too. > ################################################################################# > # start with SpinX1's dir which has to be converted to an output of the > correct polarity > setp hm2_[HOSTMOT2](BOARD).0.gpio.071.is_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.071.invert_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.071.is_opendrain 1 > # this is the green jumper wire from the SpinX1's FWD, to 7i90-p3-47 > net reverse_vfd <= motion.spindle-reverse => > hm2_[HOSTMOT2](BOARD).0.gpio.071.out > > # and the spinX1 does need an enable, so setup gpio.070 for that > setp hm2_[HOSTMOT2](BOARD).0.gpio.070.is_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.070.invert_output 1 > setp hm2_[HOSTMOT2](BOARD).0.gpio.070.is_opendrain 1 > # net line moved to be combined with enable_vfd below > net enable_vfd <= motion.spindle-on > net enable_vfd => hm2_[HOSTMOT2](BOARD).0.pwmgen.00.enable > net enable_vfd => hm2_[HOSTMOT2](BOARD).0.gpio.070.out > > The above demonstrates then when a "net" signal is defined, the next > argument on that line becomes the source for that signal. The next > two lines show where that signal is to be sent. > IF they are in the sequence shown, the => and <= gismo's are optional. > > Currently, do NOT put a comment as a trailing #comment, put it on its > own line. > > ########################################################### > # make the vfd's pdm drive unidirectional, fwd/rev handles that # > # but the SpinX1 needs a DIR, which is on P1-43 > ########################################################### > net spindle-vel-cmd-rps <= motion.spindle-speed-out-rps > net spindle-vel-cmd-rps => spindle-abs.in > # this come out on P1-41 as the pulse Duration Modulated signal to the > SpinX1, red jumper > net spindle-unispeed <= spindle-abs.out => > hm2_[HOSTMOT2](BOARD).0.pwmgen.00.value > > This is, without a doubt, incomplete, but with the halmeters help, you should > see whats missing. Yell if the water is still rising. :) > > > > On Thu, 2017-02-16 at 08:56 -0800, Kirk Wallace wrote: > > > On 02/16/2017 03:37 AM, Valerio Bellizzomi wrote: > > > ... snip > > > > > > > the VFD is a Toshiba VFS15-4037PL-W, it has a Forward input, a > > > > Reverse input, and a current speed input (and alternatively a > > > > 0-10V input). There isn't an enable input. I do not need the > > > > reverse so it should be two parallel pins, one for forward and one > > > > for speed. > > > > > > ... snip > > > > > > I found a manual here: > > > https://inverterdrive.com/file/Toshiba-VFS15-User-Manual > > > > > > I usually first check the overview graphic which seems to be on page > > > B-4. I see the F terminal which could just be shorted to common to > > > activate it. The speed potentiometer is shown too. PWM could > > > simulate that. I also see theRS485 connector. I did a search in the > > > document for "485" and found page C-4, which shows some control > > > options; terminal (relay), keypad, RS485 (Modbus?), CAN (cool), > > > communication(what the heck?). Just below are some speed setting > > > options. This should be a nice VFD. > > > > > > A little farther down from B-4 are the I/O circuit options. Looking > > > at the F entry, it basically says shorting the F terminal to CC will > > > start forward rotation. You can use a parallel port pin to control a > > > small solid state relay or opto-isolator. It just needs to tolerate > > > 24 Volts on the output. > > > > > > It looks like the VIA (voltage, input, analog?) is a speed input. > > > The same parallel port pin to solid state relay or opto-isolator as > > > F above may be used, except it only needs 10 Volt tolerence. > > > Terminal PP is the 10 Volt source (CC common isn't needed, most > > > likely). The signal from the parallel port pin should use PWM or > > > PDM. > > > > > > If you have a BOB (Break Out Board), post a make/model and/or > > > picture or other information. It may be useful for the above > > > connections. > > > > > > It looks like page D-3 is a good place to start VFD programing. > > > > > > The above may be wrong or missing some information, so study the > > > manual and decide for yourself what to do. I would get a mains input > > > noise filter right of the bat, so you don't have to chase down weird > > > issues while trying to learn how to use your VFD. Hmm... It looks > > > like your VFD already has a built-in noise filter. > > > > ---------------------------------------------------------------------- > >-------- Check out the vibrant tech community on one of the world's > > most engaging tech sites, SlashDot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > Cheers, Gene Heskett ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
