PMDX Forum

General Category => General Discussion => Topic started by: a64664137 on January 18, 2019, 04:57:37 AM

Title: PMDX 122 stepper driver wire connections
Post by: a64664137 on January 18, 2019, 04:57:37 AM

Hi all,
         I have a PMDX 122 and a stepper motor driver with the following wiring
(https://i1053.photobucket.com/albums/s476/a64664137/Forum/PMDX/2019-1-18%20%2009-36-59_zpswwb5wi5y.jpg) (https://s1053.photobucket.com/user/a64664137/media/Forum/PMDX/2019-1-18%20%2009-36-59_zpswwb5wi5y.jpg.html)
I had the ENB+ connected to J6 Fault terminal and ENB- to GND, is ths correct?

thanks,

Title: Re: PMDX 122 stepper driver wire connections
Post by: 12strings on January 19, 2019, 01:25:05 AM

The Fault terminal on the PMDX-122 is an INPUT to the PMDX-122.  Likewise, the ENA+/ENA- terminals on your driver are most likely INPUTS to the driver (read your manual to be sure).  So that won't do anything useful.

The PMDX-122 Fault input is meant to be connected to a normally open EStop switch (as opposed to the more standard normally closed EStop that would be connected to the EStop terminal), or to motor drivers that have a fault OUTPUT signal.

See the PMDX FAQ "Should I connect the 'Enable' input on my motor drivers?" for their recommendation of what to do with the enable terminals.

https://faq.pmdx.com/index.php?solution_id=1008

Title: Re: PMDX 122 stepper driver wire connections
Post by: ClementM on May 17, 2019, 08:29:37 AM

Are there any alternatives to connecting the PMDX-122 Fault Input than the standard way?

Title: Re: PMDX 122 stepper driver wire connections
Post by: 12strings on May 21, 2019, 11:43:11 PM

That is a pretty vague question.  I would guess the answer is "probably, maybe"  What do you wish to do with the fault input?

Title: Re: PMDX 122 stepper driver wire connections
Post by: Surfmaster on June 04, 2019, 03:56:21 AM

I am not too clear with what you are saying, but I believe there is a standard way to get this done.