What motors are you running? What wiring system? (Unipolar, Bipolar Series, Bipolar parallel)
You have set the drives to send 3 amps and 2 amps. this will over-amp the 7.5 volt 2.5 motor with 3 amps, and the other 1.5 amp motors with 2 amps. This will definitely cause over heating, and will require a smaller current limit resistor.
What is the inductance rating of each motor for its wiring type?
Steppers DO get hot while sitting still--even though the 203V will cut the current to 70%. Just looking at the voltage ratings makes me think these are some large inductance motors. This would mean a lot of heat would be produced while overcoming this.
The motors should not get any hotter than 160 degrees centigrade. If you touch them with a wet finger and they sizzle--they are WAY too hot.
CR. |