3540M stepper driver does not respond

Hi everyone,

I got my motor to run using a KELING 4030 driver with a breakout board. Thinking that I have mastered the trade. I switched the motor driver to 3540M from Applied-Motion, thinking it was a walk in the park but it turned out to be a marathon. There is a test switch on the motor driver. When it was turned on the motor rotates. Therefore my step signal was not correct.

According to the spec all I need is a step and a 5 V connections (direction and enable connections are not needed for stepping in one direction). The StepConf default step time, step space, direction hold, direction setup parameters must be wrong, I assumed.

step direction in X did not work both in default and invert settings. I hooked up the enable connection both in default and invert settings. Nada.

There are a minimum 500 ns step pulse and 2000 ns setup time requirement for this driver.

I assume with my ignorance if I set the following parameters when I get back on the project then my motor will run perfectly.

step time: 600 ns
step space: 600 ns
direction hold: 3000 ns
direction setup: 3000 ns

Your wisdom is greatly appreciated.

Alex

Hi

500ns is very short and possibly not even registering.

I would try something like 5000ns to 10000ns for step and 10000 to 15000ns dir to start with

If that works you can tune down. If it does not the problem may be elsewhere.

regards

Dear ArcEye,

Since I removed the motor drivers from a MiniTrak, the PCB has the model number as 3540M but one of the chip has the label 1000-123 which corresponds to 3540L, not 1000-138 for 3540M driver. This is a custom driver. Using the pinout configuration from the 3540L, the motor is working.

Thank you kindly for your wisdom,
Alex