Why did my stepper motor controller chips burn nema 23 stepper motor?

0 comments

Why did my stepper motor controller chips burn nema 23 stepper motor?

Without more information it is hard to be certain; but, the most likely cause is that the board was installed backwards. Looking at the photo, the damage on both boards seem to be centered around pin 20 and 21 of the driver IC. A schematic of a similar board shows these are both 5V inputs (DIR and *ENBL). These signals connect to the top and bottom pins of the left connector to the RAMPS. Since these are inputs, the most likely cause of a damage to these would be a high current over-voltage condition that caused the upper protection in the IC to conduct. This would require >5.5V and a lot of current. The RAMPS board routes these signals to I/O pins on the ATMEGA processor - see RAMPS Schematic. These can't easily go above 5V without blowing out the ATMEGA and they are not generally high enough current to cause the damage you see. The most likely high current and voltage would be the 12V motor supply line (VMM). This comes into the board on the top pin of the right RAMPS connector. Accidentally installing it 180 degrees (which is super easy to do since the connector is not keyed) would connect the 12V VMM to IC pin 20 instead and you would likely see the same burn mark you see on your board. A better board design would have been to key the connectors by using two sizes and/or cutting a pin so it couldn't get plugged in backwards - but they didn't.

Cloudray Stepper Motor Series has set the standard for quality, reliability, and durability in stepping motors. The precision of our Torque Power motors is matched only by the dependability of their performance. All Torque Power motors are bi-directional and totally enclosed with permanently lubricated ball bearings for long-lasting, smooth operation.

Cloudray stepper motor series are widely used in medical instruments, robotics, 3D printers, extruders, laser cutters, engraving machine, textile equipment, packaging machinery, CNC machines, etc. 
High Torque, High Precision and Long life is Cloudray's core advantages
Low vibration,Low heating, No loss of step
Fast Response,Better Acceleration Performance
Thanks to a robust design they can be selected for the harshest environments. Precise, open-loop, speed and position control can be achieved with the application of full step, half step, or microstepping electronics.
Higher Resolution,Avoidance of Resonance Regions
Stepping angle is adjustable( rang in 18°±5%), 0.9 °stepper motor's stepping angle is smaller, fineness is higher and positioning is more accurate.Avoiding vibration,runs more smoothly and gets lower noise.

Sturdy structure, extremely long life
High quality materials including bearings and shaft made in Japan
Robust assembly, high speed range, and exceptional performance in even the harshest environments make Cloudray Stepper Motors the perfect solution for demanding positioning applications.

Short length and light weight allow them to be used in highly integrated systems

 

Cloudray stepper motor factory video

Leave a comment

All blog comments are checked prior to publishing
You have successfully subscribed!