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nema motor not spinning


Cosmo

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Good morning everyone,
I am writing to get other opinions on this problem:
I installed the FlyMotion electronics controlled by Mach3, I configured the parameters given to me by the manual, the movement part consists of a Nema 34 12nm motor with a 1000 resolution encoder, the ACME screw motor connection is through a 2-partition pulley, the pitch of the screw when moving I first tried to connect the axis, then tried to use the free motor, because I thought it was a problem of undersized motors, but at this point all three motors were broken, probably the driver was broken too, the only problem was the polarity of the connector, so I ask how to find it on the motor? The wiring diagram for the motor shows the pins, but not the wire colors.
Motor and driver: https://www.oyostepper.com/goods-468-1-Axis-Closed-Loop-Stepper-CNC-Kit-130Nm-1841ozin-Nema-34-Motor-Driver.html

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Hi Cosmo,

 

could you give a brief description of the issue, when you say the motor is “not spinning” do you mean that it can turn freely by hand or is it locked in position (holding position but will not spin),

If it is locked in position, does it vibrate or move a step or two when you send it a command to move,

I have had a fair bit of experience with closed loom motors like this and I have come across some of the following problems,

 

1. The “enable” pin is not being set, the “ENA” pins on the controller need to be set, on this driver it seems that 0v is enable so if those pins are unplugged the motor should not be able to be spun by hand, if you have this connected, do the motors lock when powered and then become freely movable by hand once you tell the machine to move the motor

2. The motor cables are connected wrong, in this case the motor will vibrate when you try to move it but it will still feel locked in place

3. The encoder is connected wrong, in this case the motor will move maybe a step when told to move but won’t move any further,

Note: in both of the above cases, if you get the software to try to move the motor more that one full rotation you should get a blinking red light indicating that the driver is trying to move the motor but it is not spinning

4. The Pulse/revolution is set wrong, on the dip switches it will determine this, these are not always 400 steps/ revolution, if the switches are set wrong it could be set up to 40,000 steps/revolution, in which case the motor will lock when enables, but will spin vary slow

5. These motors also require a minimum step time, in this case it’s a minimum of 2.5uS, though personally I’ve often had them not work at 3uS so I keep to 5uS or more, this should be set table somewhere in the software, if all other connections are correct and the motors are locking when you try to move them and the driver does not blink red when you try to move them more than one rotation then it’s possible that your controller is sending the driver pulses too fast for it to register them.

 

feel free to ask if you need more information regarding any of the points.

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Hi Cosmo, if I see right you are trying to use a motor for a cnc machine and a matching driver on a printerboard.

The thing is, you can´t use the motor-outputs on the printerboard.

No worry there is a way... 

1. you power your Stepperdriver direct to the powersouce of you choice e.g. 50v or something

2. connect the steppermotor to your stepperdriver

3. as I said you can´t connect the Stepperdriver to the motorout of the Printerboard

you have to connect the step-pin of the motorsteppersocket of you printerboard to Pul(or Step)+ to your stepperdriver

the dir pin according to the dir+ pin to your driver

the dir- and pul- of your stepper to the ground-pin of steppersocket .

normally external stepperdriver are enabled, but you can connect en of the steppersocket to en+ on your stepper and en- to ground on the socket.

as you can see Ground is common.

If you plan to use the motor as a x-motor you take the x-motorstepper socket for any other the others accordingly.

IMPORTANT: this is the way I would do     BUT SINCE I AM A PHARMACIST and NOT AN ELECTRONICS ENGINEER or somthing

YOU ARE DOING AT YOUR OWN RISK , I AM NOT LIABLE FOR ANY DAMAGE OR HARM or something.

Good luck.

 

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