1. Introduction
This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of your TOAUTO 2 Axis Digital Readout (DRO) Display and Glass Linear Scales. This system is designed to provide precise measurement for CNC milling machines, lathes, and other industrial equipment, enhancing accuracy and efficiency in your workshop.
The TOAUTO DRO system features a 5-micron accuracy, an 8-bit LED high-definition nixie tube display, and supports various functions for machining operations. Please read this manual thoroughly before installation and use to ensure proper functioning and safety.
2. Safety Information
Always observe basic safety precautions to reduce the risk of injury or damage to the equipment. This DRO system is an electronic device and should be handled with care.
- Ensure the power supply matches the specified voltage range (AC 80V~260V; 50~60Hz).
- Do not expose the DRO display or linear scales to excessive moisture, dust, or corrosive substances.
- Disconnect power before performing any installation, maintenance, or cleaning.
- Ensure all connections are secure to prevent electrical hazards or signal interference.
- Keep the linear scales clean and free from debris to maintain accuracy.
- Installation should be performed by individuals familiar with machine tools and electrical safety.
3. Product Overview
The TOAUTO DRO 2 Axis Digital Readout Display system includes the main display unit, two glass linear scales, and all necessary mounting hardware and cables. The display provides real-time position feedback for two axes (X and Y).
Figure 3.1: Complete TOAUTO DRO 2 Axis Digital Readout Display and Linear Scales Kit.
Figure 3.2: The digital readout display unit and two glass linear scales.
Figure 3.3: Rear view of the DRO display showing the 9-pin connectors for linear scales.
Figure 3.4: Close-up of a linear scale read head, which detects movement along the scale.
4. Setup and Installation
Proper installation of the DRO display and linear scales is crucial for accurate measurements. Follow these steps carefully.
4.1 Measuring Travel Length
Before ordering or installing, accurately measure the required travel length for your machine's axes. The linear scales are specified by their travel length, not overall length.
Figure 4.1: Step-by-step guide on how to measure the travel length for your machine axes.
Figure 4.2: Illustration of travel length versus total length for a linear scale. Note that overall length is approximately travel length + 140mm (5.51 inches).
Figure 4.3: Important note on scale dimensions. Verify your machine has sufficient installation space for the chosen travel length (L0).
4.2 Mounting the Linear Scales
Mount the linear scales securely to the machine's moving axes (X and Y). Ensure the scale body is parallel to the axis of motion and the read head moves smoothly along the scale without binding. Use the provided mounting brackets and hardware.
Video 4.1: Installation guide for the X-axis linear scale. This video demonstrates the process of mounting the scale and read head.
Video 4.2: Installation guide for the Z-axis linear scale (applicable for vertical axes). This video shows the mounting procedure for a vertical scale.
4.3 Mounting the DRO Display
Mount the DRO display unit in a convenient and visible location on your machine. Ensure it is protected from coolant, chips, and vibration. Use the provided mounting bracket.
Figure 4.4: Dimensions of the DRO display unit for planning mounting location.
Video 4.3: Installation guide for the DRO readout display unit. This video demonstrates how to mount the display and connect the scales.
4.4 Electrical Connections
Connect the linear scales to the corresponding ports on the back of the DRO display. Ensure the 9-pin connectors are fully seated and secured. Plug the power cord into the DRO display and then into a suitable power outlet.
5. Operating Instructions
Once installed and powered on, the DRO display is ready for operation. Familiarize yourself with the keypad and display functions.
5.1 Basic Functions
- Power On/Off: Use the main power switch on the back of the unit.
- Zero Set: Press the 'ZERO' button for the desired axis (X or Y) to set the current position to zero.
- ABS/INC Mode: Toggle between Absolute (ABS) and Incremental (INC) measurement modes. ABS measures from a fixed datum, while INC measures from the last zeroed point.
- Unit Conversion: Switch between metric (mm) and imperial (inch) units.
- R Function: The DRO display includes an 'R' function for radius/diameter conversion, useful for lathe operations.
5.2 Changing Machine Type (Mill/Lathe)
The DRO can be configured for different machine types, such as milling machines or lathes, to enable specific functions and display behaviors.
Video 5.1: Demonstration on how to change the machine type setting (e.g., Mill to Lathe) on the DRO display.
5.3 Advanced Functions
Refer to the full DRO user manual (often provided separately or available online) for detailed instructions on advanced functions such as:
- Hole pattern calculations (PCD, line of holes)
- Arc processing
- Tool compensation
- Taper measurement
Figure 5.2: Examples of advanced DRO functions, including hole pattern calculations and angle measurements.
6. Maintenance
Regular maintenance ensures the longevity and accuracy of your DRO system.
- Cleaning: Keep the display unit and linear scales clean. Use a soft, dry cloth. For scales, a mild, non-abrasive cleaner can be used if necessary, but avoid harsh chemicals.
- Inspection: Periodically check all cables for damage and ensure connections are secure. Inspect the linear scales for any physical damage or accumulation of debris.
- Read Head Clearance: Ensure the read head maintains proper clearance from the scale grating. Refer to the detailed manual for specific clearance requirements.
- Environmental Protection: Protect the system from excessive heat, cold, humidity, and direct exposure to cutting fluids or metal chips.
7. Troubleshooting
If you encounter issues with your DRO system, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Display does not power on. | No power, faulty power cable, or internal fuse. | Check power connection and outlet. Inspect power cable. If fuse is accessible, check and replace if blown. |
| Inaccurate readings or erratic display. | Loose scale connection, dirty scale, damaged scale, or improper installation. | Ensure scale cables are securely connected. Clean linear scales and read heads. Verify proper alignment and mounting of scales. |
| One axis not displaying. | Loose or faulty scale cable, or damaged linear scale. | Check the connection for the affected axis. Try swapping cables with a working axis to isolate the problem. |
| Buttons unresponsive. | Stuck button, internal electronics issue. | Gently press buttons to ensure they are not stuck. If issue persists, contact support. |
If troubleshooting steps do not resolve the issue, please contact TOAUTO customer support for further assistance.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | TOAUTO |
| Model | 150+250 |
| Measurement Accuracy | 5 Micron (0.0002 inch) |
| Available Measure Length | 150mm + 250mm (6" + 10") |
| Supply Voltage Range | AC 80V~260V; 50~60Hz |
| Pulse Signal Period | 20µm |
| Travelling Speed | 100m/min |
| Display Type | 8 bit LED High-definition nixie tube |
| Material | Aluminum |
| Item Weight | 5 kg |
9. Warranty and Support
All products from TOAUTO are provided with a 2-year warranty after-sales service and lifetime technical support. A 30-day return policy is also available.
If you have any questions, require technical assistance, or need to claim warranty service, please contact TOAUTO customer support through the retailer where you purchased the product or visit the official TOAUTO website.
Note: Due to different dimensions of scales and display, you may receive your order in two separate packages. If you only receive one, the other is likely still in transit. Please wait for a short period for the second package to arrive.