User Manual for the New Version Software of the Y Series Closed-Loop Driver

This article provides a detailed explanation of how to use the software for the Y Series Closed-Loop Driver:

(The Y Series Closed-Loop Driver has two versions, 1.0 and 2.0, both of which can use the new version of the software. However, the methods for connecting them to a computer differ slightly. Below, we explain each version separately.)

New version software download link: https://github.com/StepperOnline/Tunning-Software/blob/main/Y_Series_Stepper_Driver_Debug_Software_7.4.zip

V1.0:

Please prepare the following: driver, power supply, driver debugging box, and driver software. (The motor can be connected based on the actual situation.) Here, we use the CL57Y as an example for illustration:

Take out the two cables of the Y-USB-CL and connect them in the order of driver → debugging box → PC.

Y-USB-CL driver debugging box link: https://www.omc-stepperonline.com/handheld-intelligent-setting-unit-for-closed-loop-driver-y-usb-cl

Use a DC power supply to power the driver (Note: The voltage of the power supply must be within the input range of the driver. For example, the input voltage of the CL57Y is 24VDC–50VDC, so the output voltage of the power supply must fall within this range). Connect the V+ of the power supply to the V+ port of the driver, and the V- of the power supply to the V- port of the driver. After powering on, the indicator lights on the driver and debugging box will illuminate.

V2.0:

Please prepare the following: driver, power supply, driver debugging cable, and driver software. (The motor can be connected based on the actual situation.) Here, we use the CL57Y-V20 as an example for illustration:

Take out the CABLE-PC-2 debugging cable included with the driver and connect it in the order of driver → debugging cable → PC. (If your computer does not have a DB9 interface, it is recommended to use this adapter cable: https://www.omc-stepperonline.com/usb-2-0-to-serial-rs232-adapter-with-1m-cable-converter-c006)

For the V2.0 Y Series Closed-Loop Driver, the software connection method has been updated from the original V1.0 USB debugging interface to an RS232 debugging interface. A debugging cable is included, making it more convenient to use the software with the V2.0 driver (no need to purchase an additional debugging box, unlike the older version). This is the difference in software connection between the two versions of the driver.

Below, we will introduce the specific methods for using the new version of the software.

After successfully downloading the software, it is recommended to choose English during installation. Then, click the desktop icon as the below, and the following interface will appear:

V1.0:

Select the driver model, then click "Confirm" to enter the software interface:

Click "Connection Settings" to confirm the correct serial port.
Click "Connect".

After a successful connection, the driver model will be displayed at the top of the software, and a green "Connected" indicator will appear in the bottom left corner.

V2.0:

When you open the software, the V2.0 driver will automatically identify the serial port and connect for you, without the need to manually confirm the serial port.

Click "Read Parameters", and the software will display the current parameter values of the driver.

At this point, our preparations are complete. Below is a detailed explanation of how to operate the software:

Driver Language Switching

The software offers both Chinese and English versions. You can choose the language according to your needs.

Driver Operating Mode Modification

The drive supports multiple operating modes. If you need to change to Open Loop mode or other modes, please follow these steps:

Locate the "Operating Mode" parameter.
Click the dropdown menu and select the mode you wish to change to. (For explanations of these modes, please refer to: https://help.stepperonline.com/en/article/difference-between-lead-angle-algorithm-and-vector-mode-algorithm-in-y-series-closed-loop-driver-operating-mode-hhdfpa/)
Click "Write".
Click "Save".

After completing the above steps, please power cycle the driver (turn it off and on again). The mode change will then be successful.

Peak Current Parameter Modification

It is worth mentioning that our Y Series Closed-Loop Driver features intelligent current adjustment. Regardless of the rated current of your NEMA 23/24 motor, the driver will automatically identify the required current for the motor and output the most suitable current.

If you feel that the adaptively set peak current is too high or too low, you can change the peak current by following the steps in the diagram. After modifying the current parameters, be sure to click "Write" first, then click "Save", and finally power cycle the driver. Only then will the modified parameters be successfully saved.

Default Supported Encoder Resolution Modification

The driver natively supports encoders with a resolution of 1000 lines (1000 PPR). If you need to driver a motor with a different encoder resolution, you can modify it as follows:

Locate the "Encoder Resolution" parameter.
Modify the encoder resolution to your required value. (The unit for the value displayed here is CPR. 1000 PPR = 4000 CPR.)
Click "Write".
Click "Save Parameters".

Finally, please power cycle the driver.

Gain Adjustment

Adjusting this parameter is suitable when motor noise is excessively high. Appropriately adjusting the parameters can help improve the situation.

As shown in the figure, locate the "Current Loop" parameters and modify them according to the following conditions:

For heavy loads or when high speed is required, increase the value by 100 each time from the original setting.
For light loads or when low noise is a priority, decrease the value by 100 each time from the original setting.

After modification, click "Write" and "Save Parameters".

Internal Test / Trial Run Function

The driver itself has a built-in test mode, which you can think of as a trial run. It allows you to control the motor using the driver's internal pulse generator without needing an external controller. This function helps you perform simple product self-tests to confirm whether the motor and driver are operating normally, effectively ruling out issues with the external controller. The operation steps are as follows:

Select "Trial Run".
Click the "CW Continuous" or "CCW Continuous" button. The motor will start running at the speed set in step 3.
To stop the motor, you can click either button 4 or button 5. The difference is that button 4 is a slow stop, controlled by the deceleration time you have set, while button 5 is an emergency stop – the motor will stop immediately when clicked.

Click the "CW Position" or "CCW Position" button. The software will send the number of pulses set in step 2 to the driver, causing the motor to run to a specified position.

For example, if the driver's microstep is set to 1600, and you also set the pulses in position 2 to 1600, then after clicking the "CW Position" button, the motor will rotate exactly one revolution.

Once you have modified the parameters for the trial run, clicking "Write" will make them effective. There is no need to click "Save" in the top right corner.

The above details the steps for modifying several parameters using the software. The modification of other parameters can be done by referring to these same steps. If you encounter any other issues while using the software, please feel free to contact us. We are dedicated to providing you with the best service possible!

Updated on: 27/02/2026

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