Hi all,
I have a power stage proving power to a stepper motor.
[ftp.phytron.de]
This power stage, the MSD Mini Powerpack 172-140, outputs a constant 140V DC, with no user-friendly way to reduce it. My motor has a run current of 10A/phase, so I have the drive current potentiometer set for 10.2A. It has a maximum operating voltage of 120V DC (hence my problem). It is an 8-lead, 2-phase motor, wired in parallel. Pins 1 & 2 on the power stage are for phase 1 and pins 3 & 4 are for phase 2. My question is how to reduce the voltage from 140V DC to 120V DC (or a little less). My guess is that I need a resistor on each phase, rated for at least 1,400W, and at most 12 Ohms. I'm just unsure of where to place the resistors. Any help would be greatly appreciated. Thanks.
I have a power stage proving power to a stepper motor.
[ftp.phytron.de]
This power stage, the MSD Mini Powerpack 172-140, outputs a constant 140V DC, with no user-friendly way to reduce it. My motor has a run current of 10A/phase, so I have the drive current potentiometer set for 10.2A. It has a maximum operating voltage of 120V DC (hence my problem). It is an 8-lead, 2-phase motor, wired in parallel. Pins 1 & 2 on the power stage are for phase 1 and pins 3 & 4 are for phase 2. My question is how to reduce the voltage from 140V DC to 120V DC (or a little less). My guess is that I need a resistor on each phase, rated for at least 1,400W, and at most 12 Ohms. I'm just unsure of where to place the resistors. Any help would be greatly appreciated. Thanks.