Topics

1

HiCON Motion Controller / 7535N and 7737 boards pcb vias

« on: April 01, 2020, 10:11:00 PM »

hello,
     Can anyone confirm if the mounting hole pcb vias in 7535N and 7737 boards should be mounted electrically to an earth grounded panel?
or should they be isolated?

cheers

2

dspMC/IP Motion Controller / DSPMC SIGNAL STAR GROUNDNG FOR ANALOG DRIVES

« on: March 30, 2020, 10:10:55 PM »

Hi all,
Ive owned my dspmc for about 4 years running stepper motors,
sadly it is discontinued,
now i have dmm servos running on  +/- 10V analog torque mode
but im still confused about star grounding  multiple drives please if any one is still running  a dspmc a little help to understand
would be much appreciated!

is my real world ground wiring  interoperation of star grounding multiple servo drives with dspmc  correct ?
things that I'm most confused with are:

should my signal (com) ground bus be bonded to my earth ground power bus?
how to test if my switch mode power supply is already internally got com bonded to earth ground creating a ground loop? 
ground symbols in AnalogDriveConections.pdf from vital systems   don't seam to match standards  eg, attached image

taken from the dspmc manual :

in order to filter the electrical noise from motors, drives and vfds, the GND (common)pins  on j2....j7 should be tied to the
earth ground at multiple points.
the following example shows GND pins on j2 tied to earth ground.
in addition, the power supply negative terminal should also be connected to any of the j2..j7 GND pins at two or more
terminals

trying to achieve this without creating ground loops not so easy
best regards
Amyl

3

Mach4 General Discussion / Anyone know how to select tabs with an external input signal?

« on: March 20, 2020, 11:50:32 PM »

hello,
Anyone know how/code to select tabs with an external input signal?
trying to setup new screen with external physical buttons to select different tabs
any help appreciated

Regards 
Amyl