CNC Motor Oscillation... [SOLVED]

Other Hardware Motors, Mechanics, Power and CNC
1

Hello everyone,

I'm trying to run an Igus brand bipolar motor with the following specs:

56, Nema 23

I have a C5 Nanotec motor controller that is taking an input from an Arduino Mega and switching a 40VDC power supply to the motor. The following is an image of the wiring schema for the controller:

Right now, I have a digital pin 2 connected to Direction, a PWM digital pin 5 connected to Clock, a direct 5V connected to Enable, and a GND connected to GND. The motor is connected to the controller in the correct way.

I am positive the motor is hooked up to the controller correctly, I'm not sure about the Arduino wiring to the controller. I am used to the standard "Direction" and "Step" connections on a motor controller, but I'm not sure what to do with all of these "Clock" and "Enable ports. I've been pouring over the technical details in the manual for the controller and managed to get the controllers working VERY smoothly using an analog input to control speed, but I really need to use the Arduino stepper library to better use the motors more precisely.

At the moment, this is my code:

#include <Stepper.h>

Stepper motor(200,2,5);

void setup()
{
  motor.setSpeed(200);
  delay(100);
}

void loop()
{
  while (1==1)
  {
    motor.step(1000);
  }
}

I want to test it to just run 1000 steps in a single direction, but the motor is just vibrating and not moving. Does anyone know what's wrong?

2

Try the first simple test code in this Thread. It is very basic and uses no library. Just make sure you use the correct pins - or modify the code to use your preferred step (clock) and direction pins.

You also need a GND connection between the controller and the Arduino

Try disconnecting the Enable pin, or connecting it to GND.

The Stepper library offers little or no advantage when you are using a proper stepper driver.

...R

3

Ah, so is the "clock" pin the same as a typical "step" pin?

Are you saying the Arduino should be connected to the C5 in the following manner;

Digital 2 --> Direction
Digital PWM 5 --> Clock
Arduino GND --> GND

Should that be the correct wiring scheme for the stepper library?

4

Digital 2 --> Direction
Digital PWM 5 --> Clock
Arduino GND --> GND

Yes but you forgot the enable line.

for the stepper library?

What stepper library?
They do not all output step and direction, some output the coil patterns for different types of driver. See the stepper library you use to see if it is a suitable type for your hardware.

5

omiz144:
Ah, so is the "clock" pin the same as a typical "step" pin?

That's my assumption

Are you saying the Arduino should be connected to the C5 in the following manner;

Digital 2 --> Direction
Digital PWM 5 --> Clock
Arduino GND --> GND

That should work (and you may or may not need to connect ENABLE). However you should note that there is no need to use a PWM pin. Arduino PWM has nothing to do with stepper motors.

Should that be the correct wiring scheme for the stepper library?

I don't know enough about the stepper library to answer your question. Just use the simple code I linked to until you get reliable motion.

...R

6

Hey guys,

I decided that the analog method I had working first is sufficient and my problem was the compatibility of the stepper library I was using and the controller I had wired.

Using analog signals derived from a PWM pin (using an RC circuit) I was able to achieve the precision I required. The analog voltage sets the speed and the + and - direction pins sets the motor turning (along with the enable pin).

The motor specs and shaft dimensions were all I needed to make a few rudimentary calculations and assumptions.

Thanks for you help!

7

omiz144:
The analog voltage sets the speed and the + and - direction pins sets the motor turning (along with the enable pin).

Just out of curiosity, how is the analog voltage fed to the driver?

...R

8

Robin2:
Just out of curiosity, how is the analog voltage fed to the driver?

...R

Google will answer that question - one 0--10V(20ma) analog input.

9

MarkT:
Google will answer that question - one 0--10V(20ma) analog input.

I don't see any connection like that on the Pinout diagram in the original Post.

...R