■  Product Overview

In view of the voltage mismatch between China's power grid and AC servo motor, the ultra small servo electronic transformer is specially designed to solve the problems of bulkiness, heating, power consumption and difficult installation of the traditional coil transformer. It is a good product to solve the problem of power matching in motion control system. It is essentially different from the traditional coil transformer and has a qualitative leap in performance. The servo electronic transformer adopts the most advanced microwave devices, three-phase full bridge switch resonance technology and SPWM modulation technology to completely eliminate EMI interference. The capacity of servo electronic transformer is 0.5~15kva, which can support the parallel use of servo motors, meet the servo motor system with almost all power, and support domestic and imported servo motor systems.

Matching servo motor brands are as follows;
Japan: Panasonic, Yaskawa, Mitsubishi, Sanyo, Fuji, Hitachi, Omron, etc
Europe and America: AB, FANUC, Schneider, rooster, Kobe, Lenz, etc
Taiwan: Delta, Dongyuan, etc
Domestic: operation control, Huichuan, Huada, Guangshu, eston, etc

■ product features

• Intelligent: automatically adjust the current required by the servo motor, and the output current is not affected by the voltage fluctuation of the grid, so that the servo motor can play a better performance
  
• Reliable: all components adopt German and Japanese power modules, which are safe and reliable, with a warranty of 3 years and a service life of more than 20 years
  
• Small size: small size, light weight, low price, 5 times over cutting capacity, and can work continuously for a long time
  
• Solid: the shell is made of cast aluminum alloy, and the terminal block is made of special alloy material, with slow flow and slow pressure
  
• Durable: withstand harsh service environment: ambient air temperature -30 ℃~+60 ℃, installation altitude up to.4500m
  
• Excellent performance: superior performance, high efficiency, high voltage stabilization, no interference, low heating, less power consumption, and more stable output energy
  
  

■  Model List

■  product dimension drawing

■  comparison between servo electronic transformer and traditional transformer

■  product identification code

■  precautions for use

The servotronic transformer is a pure power conversion device, with only 7 connections in total. Its own wiring is very simple, and there is no setting and parameter adjustment. Due to the simple structure of the servo electronic transformer, which is used to supply power to the main circuit of the servo driver, the fault point will certainly focus on the wiring and parameter setting of the driver itself, especially the peripheral circuit, including whether the switch of the on-off power supply is genuine, whether the capacity is sufficient, and so on.
Zero line of servotronic transformer (n)
Hefu electronic transformer requires that the power supply must be a 3-phase 4-wire power supply, that is, there must be a normal and standard zero line (n)
If the servotronic transformer is connected to the power supply, there is no response
Please first check whether the servotronic transformer is connected to the neutral line.
Wiring of servotronic transformer
The four terminals are the servo electronic transformer power incoming lines, i.e. R, s, t and N, and the three terminals are the servo electronic transformer power outgoing lines, i.e. L1, L2 and l3
Control power supply of servo driver
Pay attention to the control power supply of servo driver. Take Panasonic servo as an example, ㄩ C and L2C must be separately supplied with single-phase 220VAC, or T-phase live wire can be used to connect UC, and zero wire (n) can be used to connect l2c
Can one servotronic transformer be equipped with multiple drivers
On the premise of ensuring the power capacity, one co serving electronic transformer can be equipped with multiple co serving drivers.
About using multimeter to measure the output voltage of servo electronic transformer
Because of the conflict between the working principle of the servotronic transformer and the working principle of the standard multimeter, the multimeter cannot be used to measure the output voltage of the servotronic transformer.

■  servotronic transformer wiring

Note 1: the special electronic transformer for Dong clothing must be a 3-phase wire system, that is, it must be a 3-phase 380VAC power supply system with wires, otherwise the special electronic transformer for servo cannot be used. 2: if the driver has phase loss or abnormal voltage, it should be caused by the wrong wiring phase sequence. The problem can be solved by adjusting the L1, L2, L3 phase sequence of the electronic transformer output to the driver