On Sun, 24 Mar 2013, Roberto Sassoli wrote: > Date: Sun, 24 Mar 2013 23:59:16 +0100 > From: Roberto Sassoli <bobwolf....@gmail.com> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] 3PWM on 7i43 MESA board > > Il 24/03/2013 01:56, emc-users-requ...@lists.sourceforge.net ha scritto: > > From: andy pugh <bodge...@gmail.com> >> Arguably the 7i39 is economical on pins. The hostmot2 2-phase PWMgen >> normally uses 6 pins (one pin for each gate of the inverter bridge). >> The 7i39 configs only use 3. >> 3 pins to control the inverter, 3 Hall sensors and 3 encoder lines is >> the bare minimum required. > ok > the card work with your configuration > but the 3PWM work only with pwm, encoder, enable and sense (3+3+1+1 > pin=8pin) > too much pin expensive ;-))) > i'll try to install webpack 9.2 and see you soon
Note: the Encoder is always needed, as is enable unless you have special provisions to disable drive when PWM is not toggling. The sense signals and hall signals are just GPIO so there are really no wasted pins. (even on a 7I39 if you dont use the hall /sense pins the Hall pins can be used as inputs and the sense pins for input or output) The 3 phase PWMgen has no connection at all to the hall, encoder or sense signals although some configs wire the 3pwmgens fault input to a sense pin > > ciao > Roberto > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_mar > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
