! EMERGENCY!Stepper motor doesn't rotate

Other Hardware Motors, Mechanics, Power and CNC
1

I neeed help guys. I have a NEMA23 stepper motor which came with the HSD57 hybrid servo driver but I can't get it to work properly. The stepper motor spins internally and sometimes the shaft moves back and forth but it doesn't move smoothly there is a lot of vibration.

my wiring setup
pulse+ and dir+ are connected to arduino's 5v
pulse- and dir- are connected to arduino's output pins

switch settings
I set it to 1600 pulses per revolution
sw7 is on because I didn't want to deal with enable signals

I am attaching the driver and motor links
I need to fix this by tomorrow or I might lose my job please help

my current code

#define PULSE_PIN 5   // PUL- connection
#define DIR_PIN 4     // DIR- connection

void setup() {
  pinMode(PULSE_PIN, OUTPUT);
  pinMode(DIR_PIN, OUTPUT);
  digitalWrite(DIR_PIN, HIGH); // Set initial direction
}

void loop() {
  // Rotate 1 full turn clockwise (16x microstepping = 3200 pulses)
  digitalWrite(DIR_PIN, HIGH);
  for(int i = 0; i < 75; i++) {
    digitalWrite(PULSE_PIN, HIGH);
    delayMicroseconds(25); // Pulse width
    digitalWrite(PULSE_PIN, LOW);
    delayMicroseconds(25);
  }

  // Rotate 1 full turn counterclockwise
  digitalWrite(DIR_PIN, LOW);
  for(int i = 0; i < 75; i++) {
    digitalWrite(PULSE_PIN, HIGH);
    delayMicroseconds(25);
    digitalWrite(PULSE_PIN, LOW);
    delayMicroseconds(25);
  }
}

I know 75 is very low and 25 is very high for this but this was the only way the rotate the shaft a little.
(chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://dosya.motorobit.com/pdf/stp.05.12-datasheet.pdf)
https://www.keskinlerelektronik.com/urun/jk57hsn30-nema23-encoderli-step-motor-ve-surucu?srsltid=AfmBOops2kHmYdZODOrP0GNLRWq8HRhT2ICrDpmT9BE_MEsGoIdfWL0f)

2

Your step rate is too high. Try reducing it to 1kHz. In the long term, you will probably need an acceleration profile.

Edit: it appears your driver a handles acceleration, so step rate may not be a problem.

The comment doesn't match the code, should the 75 be 3200?

3

Thanks for replying .When I do 3200, it doesnt rotate. This is why I reduced to 75. What do you mean by my driver handles acceleration I don't get it. What should I change this code for working

4

Try this

5

In your datasheet is this:

Accelerate and decelerate control inside, Great improvement in smoothness of starting or stopping the motor.

1 Like
6

Yes, a stepping rate of 1000000us/(25us+25us)= 20000Hz is too fast for a motor to start up with.

Also:

This HSD57 manual suggests:

image
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...and the common cathode is more like your program seems to be is written for.

If you've got it wired like common Anode, the pulses will be inverted. Switch your HIGHs and LOWs for Common Anode
or active-LOW wiring.

7

Thanks for replying. I try this one rn but my driver gave me red light seven times for one period. I looked at the Leadshine's datasheet and it says that means Position Following Error Protection. This is an closed loop driver. Do I have to cabled my Encoder cable to driver or RS233-TTL to my computer? I am so confused

8

Yes encoder cable from the motor should be connected to the driver, as shown

image
image987×684 76.5 KB

9

Thanks for replying. It seems like my connection diagram fit in with Common Anode one. But How do I change the my code for Common Anode?

10

You just replace every LOW with HIGH and HIGH with LOW on your code.

2 Likes
11

Thanks for replying again. My driver has 6 input for encoder data's. However I can't get How should I supply 5v for encoder? Cause it has red an white cables for VCC and GND.

12

I did it but still same. If I don't misunderstood that the Closed Loop Driver doesn't work without encoder cable's. I don't understand the relation between ardunio which my code doesn't have any encoder value. How this driver read my encoder without any settings

13

image
image1165×1195 79.9 KB

14

Hi, @maprex

Can you please post a copy of your circuit, a picture of a hand drawn circuit in jpg, png?
Hand drawn and photographed is perfectly acceptable.
Please include ALL hardware, power supplies, component names and pin labels.

Can you post some images of your project?
So we can see your component layout.

Do you have a DMM? (Digital MultiMeter)

As @bobcousins has pointed out, the Vcc and gnd terminals, check with DMM.

Tom.... :smiley: :+1: :coffee: :australia:

15

yes it is. If I just plug this in, will it be active immediately or do I need to make an additional setting? Also, does it feed 5v and ground from within itself?

16

Thanks for everyone comments, I just plug the encoder and motors run :joy:. You guys saved my job, really apprieciete it. Howver I have new problem. How will I see the encoder values from Ardunio, in my application, I need to send encoder data to another computer. All I see is the picture I sent. I have TTL cable, Should I cut the cable on one side and plug it into the Arduino on the other side?

Ekran görüntüsü 2025-04-04 141506
Ekran görüntüsü 2025-04-04 141506742×538 46.7 KB

17

How can I see the encoder value in Ardunio

18

I don't know that you can do that easily. I suppose that you could make a Y cable and interpret the encoded data on the Arduino.

I understand that the RS232-TTL can be used to configure the drive and perform some movements. There may be some software available to do that, and there may also be a specification somewhere of the commands you can send. I haven't seen a specification for either of those. You may be able to get them from your supplier or perhaps direct from the manufacturer.

1 Like
19

Hi,
With a project my workplace designed last year, we had to do the same, read the encoder that was feeding back to the stepper driver.
We simply spliced into the encoder signals going into the driver, used a MOSFET to opto coupler for each encoder channel, only two channels were needed, and fed the opto output back to the PLC to count itself.

The driver's Vcc was able to power the opto input side of the circuit.

Tom.... :smiley: :+1: :coffee: :australia:

2 Likes
20

Thank you sensei