Hi, I recently bought a Blackbox and Nema 23-01 3Nm 4.2 A Stepper motors to power my paulimot SX3L tabletop milling machine. Unfortunately, however, the motor can only move the Z axis downwards, not upwards. If I increase the voltage for the z axis at the blackbox, it becomes better until the red exclamation mark at the black box turns on and the axis doesn't move any longer. What shall I do? Buy a stronger stepper motor? Use the power of Y2 axis (somehow) combined with the Z axis or will I need to buy a transmission since my setup reached the maximum load of the blackbox? Thank you in advance!
put a counterweight on the head to support the weight. just a pulley above the head and a rope from the head, up, over, down to a weight that just about balances the head weight. now your Z motor does not have to lift the weight, only move it (so possible acceleration may be slower)
Thank you for the reply. What is the maximum Volt and Amp load, the black box can deliver per stepper motor? Dind't find any details here. The counterweight solution would be rather complicated in detail so I am thinking about upgrading the motor instead. Thank you in advance
See docs.openbuilds.com/blackbox (3.2A RMS 4A peak Stepper drivers are constant current (varies voltage automatically) - you do want 3-6v coil rating motors though - lower = more acceleration
When choosing stepper motors bear in mind that you shouldn't run them above about 80% of their maximum rated current. What are the specifications of the the motor you have on Z, and how do they compare with these :- NEMA 23 Stepper Motor - High Torque Series Alex.
