1. Introduction
This manual provides essential information for the safe and efficient operation of your RATTMMOTOR BT30 Air Cooled Automatic Tool Change (ATC) Spindle Motor and FuLing Inverter Kit. This kit is designed for metal CNC router milling applications, offering high speed, power, precision, and stability. Please read this manual thoroughly before installation and operation.
2. Package Contents
Verify that all items listed below are included in your package:
- 1 x 4.5KW / 7.5KW Square ATC Air Spindle Motor (BT30, 4 bearings, 24000rpm, 220V / 380V as per selection)
- 1 x FuLing Brand Inverter (220V / 380V as per selection)
- 1 x BT30-ER25 Tool Holder with Pull Stud
- 2 x Aviation Plugs
3. Specifications
3.1 Spindle Motor Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Spindle Model | RTM120X103-30-24Z-7.5 | Frequency | 800Hz |
| Rated Speed | 12000 RPM | Voltage | 380V ± 10% (or 220V as selected) |
| Maximum Speed | 24000 RPM | Collet | BT30 |
| Rated Torque | 6 Nm | Current | 12A |
| Peak Torque | 7.2 Nm | Power | 7.5 KW (or 4.5KW as selected) |
| Cooling Type | Air Cooling | Poles | 4 |
| Bearing Type | 2*7008 + 2*7006 | Number of Phases | 3 |
3.2 FuLing Inverter Specifications
| Parameter | Value |
|---|---|
| Power | 7.5KW |
| Input Voltage | 380V (+20%) (or 220V as selected) |
| Input Phase | 3 phase |
| Input Frequency | 50-60Hz (+5Hz) |
| Output Voltage | 0-380V |
| Output Phase | 3 phase |
| Output Current | 16A |
| Output Frequency | 0-1000Hz |
4. Setup and Installation
4.1 Spindle Installation Guidelines
- Fan Cooling System: When the spindle rotates, the rear fan system must be activated. Ensure a correct 12V supply voltage for the fan.
- Air Sealing Control (AS): To prevent water or impurities from entering the spindle's internal components, the gas sealing device must be started simultaneously with the machine. Multi-stage filtration is required for the compressed air.
- Compressed Gas Quality Requirements:
- Oil content: < 0.01 mg/m³
- Solid particle: < 5 µm
- Pressure dew point: < 7.5 ℃ (0.7 MPa)
- Tool Clamping: This spindle features an automatic tool change device. The shank form is BT30.
4.2 Inverter Wiring
Proper wiring of the inverter is crucial for safe and correct operation. Refer to the diagram and terminal descriptions below for guidance.
| Terminal Identification | Name | Function Description |
|---|---|---|
| R,S,T(L,N) | Main circuit power input terminal | Connect single-phase (three-phase) power supply |
| U,V,W | Inverter output terminal | Connecting three-phase motor |
| BR+,BR- | Brake terminal | Common DC link input terminal |
| P1(DC+),DC- | DC bus terminal | Connecting external brake unit |
| P1,P2 | External reactor terminal | Connecting an external DC reactor |
| PE | Ground terminal | Inverter safety ground |
5. Operation
5.1 Running-in Program Instructions
Before initial use or after a long period of inactivity, the spindle must undergo a running-in procedure to ensure proper lubrication and bearing seating. Only proceed if all monitoring signals indicate no failures and all safety devices are correctly installed and functioning.
- Start the spindle at 25% of its maximum speed for 30 minutes.
- Increase the speed to 50% of its maximum speed and run for 15 minutes.
- Finally, increase to the maximum operating speed.
Throughout this process, continuously monitor the spindle's temperature. The spindle will generate some heat, but it should not be excessively hot to the touch. If the spindle becomes too hot, immediately stop operation and contact customer support.
5.2 Inverter Control Panel
The FuLing Inverter features a digital operator panel for control and monitoring. Familiarize yourself with the buttons and their functions:
| Icon | Explanation |
|---|---|
| PRGM/ESC | Entry or exit of the first level menu. |
| FUNC/DATA | In normal operation mode, press to display various status information (frequency command, output frequency, output current). In programming mode, press to display parameter content and change data. |
| FWD/REV | Selects forward or reverse rotation. Pressing this button decelerates the motor to 0 Hz and starts to accelerate to the set frequency command in the opposite direction. |
| JOG/>> | Press this button to execute the jog frequency command. In parameter operation mode, this is the left shift key. |
| RUN | Starts the run key (if set to external terminal control, press this key is invalid). In parameter operation mode, this is the right shift key. |
| STOP/RESET | Stops the reset button. If the inverter is interrupted due to a fault condition, press this button to reset after the fault has been eliminated. |
| UP/DOWN | These two keys are used to select parameter items or modify data. |
6. Maintenance
- Bearings: The spindle's angular contact bearings are grease lubricated and designed for lifelong lubrication within their life cycle. No additional lubrication is typically required.
- Cooling System: The air cooling system ensures thermal balance. Regularly inspect the fan and air passages for any obstructions to maintain efficient cooling.
- Temperature Monitoring: The spindle has a built-in PTC 140 temperature sensor. Monitor this to protect the motor from overheating.
- Cleanliness: Keep the spindle and inverter clean and free from dust and debris, especially around cooling vents and electrical connections.
7. Troubleshooting
This section addresses common issues you might encounter. For complex problems, please contact technical support.
- Spindle Overheating: If the spindle becomes excessively hot during operation, immediately stop the machine. Check the 12V power supply to the cooling fan and ensure air passages are clear. Verify that the running-in procedure was followed correctly.
- Unusual Noise/Vibration: Stop operation and inspect for loose components, tool imbalance, or bearing issues. Refer to the 'User Tips' section regarding noise.
- Inverter Fault Codes: If the inverter displays a fault code, consult the FuLing Inverter manual (not provided here) for specific error definitions and troubleshooting steps. Use the STOP/RESET button to clear faults after addressing the underlying issue.
- Tool Clamping Issues: Ensure the BT30 tool holder and pull stud are correctly seated and free from damage or debris.
8. User Tips
- Noise Levels: Users have inquired about the noise level at 24000 RPM. While some operational noise is normal for high-speed spindles, any sudden increase or unusual sounds should be investigated. Ensure proper mounting and balance of tools to minimize vibration and noise.
- Inverter Settings: The FuLing Inverter parameters are typically pre-set by the manufacturer. Avoid changing these settings unless you have a clear understanding of their function and impact on spindle performance.
9. Warranty and Support
For any technical assistance, warranty claims, or spare parts inquiries, please contact the seller or manufacturer directly. Keep your purchase records for reference.