Hello to all.

I have a problem with connecting the DM860A driver to the NVUM controler.
http://www.longs-motor.com/stepper-motor-driver-dm860a.html
https://www.nvcnc.net/pdf/NVCNC_NVUM_N.pdf
I wired them according the wiring diagram provided by the manufactors but I can’t get it to work.
The com+ from the NVUM Goes to the PUL+ and the DIR+ at the driver
The CPX- goes to the PUL-
The DIX- hoest to the DIR-
The NVUM did work before in combination with a MD430 driver but that driver was to weak to keep for the upgrade from 270 oz nema 23 steppermotor to 1232 oz nema 34 motor.
In the dro the screen says it is moving but it does not move in real time.
The motor is giving holding torque.

At mach3 side it has the NVUM plug-in installed.
I didn’t change any settings in the configuration.

Please Some help

This guy on YouTube has the same problem
https://youtu.be/J0zvoeLxPbA

i think you have to wire then enbl Signal as well.

even the Manual say's it Needs not to be connected.

have you checked pul/dir signals with Voltmeter?

for a quick test you can disconnect the dix- wire from NVUM and hold it to GND on the NVUM everytime you put it to gnd the Motor must do
one step.

I connected the enbl+ but I dont know how to connect the enbl-
The pul/dir signals 4.8 volt.

No step when i contact the dix to the GND

for a quick test you can disconnect the dix- wire from NVUM and hold it to GND on the NVUM everytime you put it to gnd the Motor must do
one step.

GND

You mean the gnd that comes from the powersuply to the nvum?

you can use the GND1 from spindle Connections.

No steps.