Hi, Thanks for allowing me to join forum, I am new to CNC but experienced in Electronics and Computers, I am building a CNC Machine based on a NYC CNC Project but a bit higher spec Using Mach3 driving a BOB and 4 TB6600 stepper Drivers to 2 x "X" axis, "Y" axis and "Z" axis and a spindle motor working on the PWM port of driver board.
My Stepper motor power source is 24 volts.
The first quiry I have is the Stepper drivers, I am using Nema 17 for X and Y motion but there are 2 settings on TB6600 2/A 400 steps or 2/B 400 steps, which one do I select, also the motor Rating is 1.68amps/Phase so I selected 1.5 amp switch, for the Z axis I am using Nema 23 which has 1.8deg so 200 steps and set to 3 amp.
My other concern is reading different forums its a little worrying to find Stepper drivers are burning out so is there something I can do to protect this.
Also the BOB has the USB supply from the Computer which is running quite a few things i.e Limit switches, and the PUL+, DIR+ and ENA+ is there enough power being supplied by PC to power all these things as standard USB 2 will only supply 400ma.
Most grateful for any advise
Regards John