RATTMMOTOR 2-Axis/3-Axis GRBL Controller Board & Offline Module User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your RATTMMOTOR 2-Axis/3-Axis GRBL Controller Board and 2.8-inch Touch Screen LCD Offline Controller Module. This system is designed to provide precise control for CNC router engravers, supporting various spindle motors and offering convenient offline operation without the need for a constant computer connection.

2. Product Overview

The RATTMMOTOR GRBL Controller Board is a versatile control unit for CNC machines, featuring multiple ports for stepper motors, spindle motors, and laser modules. It is complemented by an intuitive 2.8-inch LCD touch screen offline controller for easy operation.

Figure 1: RATTMMOTOR GRBL Controller Board with labeled connection points.

Key Features:

• Supports 775 24V spindle motors and 0-500W 48V spindle motors.
• Laser Module ports: two 12V-2PIN, two 12V-3PIN, one 24V-2PIN, and one 24V-3PIN.
• Supports 2-axis/3-axis engraving machines, including dual Y-axis configurations.
• Includes interfaces for XYZ limit switches and external offline controller.
• 2.8-inch LCD touch screen for clear display and delicate operation.
• Easy file access via SD card, allowing for PC-free operation.
• Compatible with 3018, 3018 Pro, 3018 Pro Max, 3020 Plus, and 4540 series CNC engraving machines.

3. Setup Instructions

3.1 Unpacking and Component Check

Carefully unpack all components and verify against the packing list. The package should include the GRBL Controller Board, the GRBL Offline Controller Module, a USB cable, and power connection wires.

3.2 Controller Board Connections

Refer to the diagram below for proper connection of components to the GRBL Controller Board:

Figure 2: Detailed connection diagram for the GRBL Controller Board.

1. Power Input: Connect a DC 7-36V power supply to the designated power input terminal.
2. Spindle Motor: Connect your 775 24V or 0-500W 48V spindle motor to the appropriate spindle motor terminals.
3. Stepper Motors: Connect X, Y1, Y2 (for dual Y-axis), and Z-axis stepper motors to their respective stepper motor driver ports.
4. Laser Module: Utilize the 12V-2PIN, 12V-3PIN, 24V-2PIN, or 24V-3PIN ports as required by your laser module.
5. Limit Switches: Connect XYZ limit switches to the dedicated limit switch interface.
6. Offline Controller: Connect the GRBL Offline Controller Module to its designated port.
7. USB Port: Use the USB Type-C port for connection to a computer if needed for initial setup or advanced control.

3.3 Offline Controller Setup

The offline controller allows for operation without a computer. It features an SD card slot for file storage and a switch button.

Figure 3: Offline Controller with SD Card slot and switch button.

1. Insert an SD card containing your G-code files into the SD card slot on the offline controller.
2. Ensure the switch button is in the 'ON' position to enable the controller.

4. Operating Instructions

4.1 Basic Operation with Offline Controller

The 2.8-inch LCD touch screen provides a user-friendly interface for controlling your CNC machine.

Figure 4: Offline Controller features including touchscreen and SD card access.

• Navigation: Use the touch screen to navigate through menus and select options.
• File Selection: Access G-code files stored on the SD card directly from the controller.
• Manual Control: The touch screen allows for manual control of X, Y, and Z axes, as well as spindle and laser functions.
• Start/Stop: Initiate and pause/stop engraving jobs directly from the controller.
• Homing: Perform homing procedures for the CNC machine.

4.2 Compatibility

This control board and offline controller are compatible with a range of CNC engraving machines, including:

• 3018 series (3018, 3018 Pro, 3018 Pro Max, upgraded 3018 Pro)
• 3020 Plus series
• 4540 series

Figure 5: RATTMMOTOR system controlling a CNC router for engraving.

5. Maintenance

To ensure the longevity and optimal performance of your RATTMMOTOR GRBL Controller Board and Offline Module, follow these maintenance guidelines:

• Keep Clean: Regularly clean the board and module to prevent dust and debris accumulation, which can affect performance and cause overheating. Use a soft, dry cloth or compressed air.
• Ensure Ventilation: The controller board includes a fan for heat dissipation. Ensure that the fan is not obstructed and operates correctly.
• Check Connections: Periodically inspect all wiring connections for looseness or damage. Secure any loose connections to prevent intermittent operation or electrical issues.
• Storage: When not in use, store the components in a dry, dust-free environment away from direct sunlight and extreme temperatures.

6. Troubleshooting

If you encounter issues with your RATTMMOTOR GRBL Controller Board or Offline Module, refer to the following common problems and solutions:

• No Power:
  • Check the power supply connection and ensure it provides the correct voltage (DC 7-36V).
  • Verify the power switch on the board is in the 'ON' position.
• Motors Not Moving:
  • Ensure all stepper motor connections are secure and correctly wired.
  • Check if the GRBL firmware is properly loaded and configured.
  • Verify that the G-code file is valid and selected on the offline controller.
• Offline Controller Not Responding:
  • Ensure the offline controller is securely connected to the main board.
  • Check the SD card for proper insertion and file integrity.
  • Restart the system by cycling the power.
• Inaccurate Engraving/Cutting:
  • Verify the calibration settings for your stepper motors in the GRBL firmware.
  • Check for mechanical issues with your CNC machine (e.g., loose belts, worn lead screws).

For persistent issues, consult the RATTMMOTOR support resources or contact customer service.

7. Specifications

The following table details the technical specifications of the RATTMMOTOR GRBL Controller Board and Offline Module:

Figure 6: Product Specification Table.

8. Warranty and Support

8.1 Warranty Information

For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact the seller directly. Warranty coverage typically includes defects in materials and workmanship under normal use.

8.2 Customer Support

Should you require technical assistance, have questions regarding installation, operation, or troubleshooting, please contact RATTMMOTOR customer support. You can typically find contact information on the product packaging or the official RATTMMOTOR website.