Micro-Energy Inverter Debugging Guide--Machine Tool Spindle

1. System Introduction
The spindle is an important part of the lathe, and plays an important role in improving processing efficiency, expanding the range of processing materials, and improving processing quality. At present, there are two main types of continuously variable speed systems: variable frequency spindle system and servo spindle system, which generally use DC or AC spindle motors. The spindle is driven to rotate through a belt drive, or through a belt drive and a reduction gear in the spindle box (to obtain greater torque). Since the spindle motor has a wide speed regulation range and can be steplessly regulated, the structure of the spindle box is greatly simplified. Due to the high cost-effectiveness of the inverter, the inverter is very commonly used on lathes. With its unique performance and superior cost-effectiveness, the WIN-V63 series inverter of Wei Neng has rapidly risen in the application of CNC machine tools.
WIN-V63 series inverter can meet the needs of CNC machine tools for continuously variable speed of the main drive system. Its main features are: small size, belonging to the "mini" product, occupying less space in the control cabinet; especially in terms of low-speed torque to meet the needs of machine tool spindles, 0.5HZ starting torque can reach more than 180%; carrier frequency range 0-16kHz, effectively reducing the howling sound of the spindle system; provide two standard 0-10V analog interface (AI1 voltage 0-10V, AI2 voltage/current optional 0-10V/0-20mA DC), compatible with most CNC system interfaces, strong versatility; strong overload capacity, more than 150% rated output current for more than 2 minutes; provides multifunctional output terminal signals, such as zero speed signal, running signal, speed arrival signal, fault indication, to meet the system's monitoring of spindle speed status; automatic torque compensation to meet the processing needs of machine tool spindles under low speed conditions; standard RS485 communication interface, MODBUS communication protocol, with computer debugging software; automatic setting function for both stationary and rotating motor parameters, online identification of motor parameters, to ensure system stability and accuracy. With instantaneous stop and non-stop function, it effectively avoids interference caused by voltage fluctuations.

2. Selection of Micro-Energy Inverter
According to the application characteristics of machine tool electric spindles, the WIN-V63 series inverter developed and produced by Micro-Energy Technology is used. The power of the inverter is basically 2.2KW3.7KW, 5.5KW, 7.5KW, 11KW, 15KW, 18.5KW, 22KW, 30KW.
The inverter models are: WIN-V63-2R2T4, WIN-V63-3R7T4, WIN-V63-5R5T4, WIN-V63-7R5T4, WIN-V63-011T4, WIN-V63-015T4, WIN-V63-018T4, WIN-V63-022T4, WIN-V63-030T4

3. Wiring and debugging
1. Wiring diagram
1) Main circuit wiring diagram

In the application of machine tool electric spindle, fast acceleration and deceleration are required, and the dynamic braking function must be used. The WIN-V63 series 45KW and below have built-in braking units, so there is no need to use external braking units. You only need to use external braking resistors according to the brake resistor selection suggestions in Chapter 8 of the "WIN-V63 User Manual" attached to the machine to achieve the dynamic braking function.

2) Control signal wiring

2. Debugging steps
According to the motor nameplate, set the correct motor parameters to the P3 group of the V63 inverter.