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I think you are asking too much from the stepper motors and they are stalling/missing steps. Reduce your cutting load and the problem will most likely disappear.
Matt
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Hi,
My 1100s X axis keeps cutting out during cuts. It acts as if it is getting stuck and if I bump the motor it will start to move again. keep in mind the computer does not know that and it will cut in the wrong spots. Any help would be great.
Tom
I think you are asking too much from the stepper motors and they are stalling/missing steps. Reduce your cutting load and the problem will most likely disappear.
Matt
Define "cuts out". Does it stop moving with no sound from motor, or stops moving with lots of noise from motor? "Cuts out" implies electrically dead - no power - no noise? "It acts as if it gets stuck" implies - power on - motor stalled - lots of noise from missed steps. If you give a crap description of the symptoms you will get a crap diagnosis.
Phil
Originally Posted by two4tom
cut out no power to stepper with no sound. if I jog left to right with no load or doing any cutting im just moving the table it will stop. If I bump the motor it will come back on. Ive checked the wiring and its all good.
Switch your x and y axis motors and see if the problem moves axis.
Phil
Sorry to be nitty, but what do you mean by bump? Are you hitting the physical motor housing with something? How hard?
The fact that a physical action will cause it to start moving implies it is likely an electrical connection issue somewhere. It could be subtle, and be a connection on or inside the driver board, a broken or intermittent wire to the motor, or a broken solder connection inside the motor. That is why I ask how hard. If it is very light, I would focus on the motor side. If it is hard enough to say cause a vibration in the cabinet, you might need to look there.
If I was going to diagnose this with the machine here, I would likely try to put an amp meter on each lead of the stepper. A clamp on meter would be perfect here. When the stepper stops, I would check to see if current was flowing through the motor. If there is no current, check the voltage across the wires. If there is voltage and no current, you likely have a broken wire or connection. If there is current and low voltage, you have a rotor lock or a short. If there is no voltage and no current, then the stepper controller might be bad or is not getting a signal from the controller.
Maybe a slightly faster way: When the motor is not moving, does it still get warm? Let it stall for a minute or two and check the motor temp. If it gets cooler, then no power is flowing. If it gets hotter, current is flowing and it is rotor locked or physically blocked.
A mechanical lock-up is going to be obvious by the noise. It has to be electrical. Switching the motor tells you if it is in the motor (buy a new one) or in the wiring (trace and fix).
Phil
In the event that the x-axis motor shows no fault when installed on the y-axis you should not automatically assume that the problem is therefore in the x axis wiring. Disturbing the setup may inadvertantly, temporarily fix the problem. In this case you should also install and test the y-axis motor on the x-axis. You need a positive confirmation of where the problem is.
Phil
Hi,
Well it is the motor. Thanks for all the help.
Tom
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