Technical Knowledge

What is an integrated servo motor
Release Date : 2020-04-27 15:48:43
The integrated servo motor, as the name suggests, is a servo motor that integrates the motor, encoder, and driver into one.




The integrated servo motor is a servo system developed based on the DC low-voltage power supply method, using permanent magnet synchronous motor and FOC drive mode. At the same time, it supports EtherCAT, CANopen, Modbus and other bus mode control, which has higher integration advantages.
 

1. Features

 
1. Adopting EtherCAT / CANopen protocol (DS402), can carry out complex multi-axis servo parallel high-speed collaborative control, exquisite and flexible, and can realize small-scale automation of mechanical equipment. The DS402 protocol is a motion specification supported by mainstream drivers and controllers in the world, and has good interchangeability.
 
2. Wide voltage input (16 ~ 52VDC), can also use battery power supply.
 
3. Integrated single-turn absolute value encoder, zero point memory within limited range; integrated I / O, can be set to positive limit, negative limit, origin, multi-function digital output, pulse input detection.


 

Provide customizable services, customize the features of multiple sports modes: dual-wheel differential drive mode, wheel slip alarm, etc.
For more function parameters, please check the PMM series integrated servo motor.
 

2. Differences from traditional servo motors



Project DC brushless Split low voltage servo AC servo Integrated servo
Voltage AC220V DC24V AC220 DC16~52V
  DC24V DC36V AC380  
  DC36V DC48V    
  DC48V      
Power supply Industrial frequency AC DC switching power supply Battery Industrial frequency AC DC switching power supply Battery
  DC switching power supply Battery   Battery
  Battery      
Feedback Sensorless 1000 line incremental encoder 23bit absolute encoder 14bit absolute encoder
  Hall 2500 line incremental encoder 2500 line incremental encoder 2500 line incremental encoder
Function Speed Speed,Position (A few have torque) Full Function Full Function

 













The integrated servo motor power supply mode is DC switching power supply or battery; the input voltage range is 16 ~ 52VDC, which has more flexible power supply input requirements than traditional servo motors.
The encoder adopts 14bit absolute encoder and 2500 line incremental encoder.
 

3. Advantages with traditional servo motors


  DC brushless Split low voltage servo AC servo Integrated servo motor
Cost low high high Slightly lower
  Drive + Motor + Cable Encoder + driver + motor + cable Encoder + driver + motor + cable Drive + code + motor + few cables
Performance & function low medium high medium
  Average performance, simple function, only simple speed regulation Complete functions, performance is greatly affected by voltage Complete functions, some products have powerful performance The drive and motor are more perfectly matched, fully functional, and performance limited to voltage.
Cumbersome installation medium high high low
  Power cord, power cord, pulse / bus control line driver, motor Power line, power line, encoder line, pulse / bus control line, driver, motor Power line, power line, encoder line, pulse / bus control line, driver, motor Power line, bus control line, integrated low-voltage servo motor
Use cost performance high Sighly high high high
  Low price Low installation efficiency, many failure points, difficult maintenance, and high layout cost (electric control cabinet) Low installation efficiency, many failure points, difficult maintenance, and high layout cost (electric control cabinet) High installation efficiency, few failure points, simple maintenance, low layout cost, convenience of extension shaft

 

















































The integrated servo motor adopts the integrated design of drive + coding + motor + a small number of cables, which makes the drive and motor adaptation more perfect, eliminating the matching process between the drive and the motor, and enabling rapid deployment without the bloated control cabinet design, which reduces The cost.
At the same time, the PMM series integrated servo motor has 4 sets of wave trap parameter settings, which can effectively suppress resonance.
 

Summarize the characteristics of the integrated servo motor:

1. Compact: highly integrated, save space and reduce cables
2. Easy to use: wide voltage input, integrated IO, EtherCAT / CANopen protocol
3. Low cost: no control cabinet, quick installation and selection, fast matching
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