DC/AC Servo Drives


A European manufacturer of industrial systems for automation and other applications.



To design an AC/DC servo drive with top 10 protection functions in compliance with the level SIL 3 certification and make it ready to go into mass production on the client's side.



Our engineering team designed hardware, developed software, and modelled an enclosure for the mass production of the AC/DC servo driver with the following features: 

Input power
  • 230V/380V
  • 24V60V
Control mode
  • Position control
  • Torque control
  • Velocity control
  • Full-closed control
  • RS-232
  • RS-485
  • EtherCAT
  • Ethernet
  • CANopen
Encoder feedback
  • Incremental
  • Absolute
Analog/digital signals
  • DI/DO signals
  • 420 mA, 010 V
Protection function
  • Overvoltage, overcurrent, overspeed, incorrect feedback, etc.
  • PWM deadtime, PWM shoot through
  • SS1 (safe stop 1), SS2 (safe stop 2)
  • SBC (safe brake control), SBT (safe brake test)
  • SLI (safe limited increments)
  • SLP (safe limited position)
  • SOS (safe operating stop)
  • SSR1 (safe speed range)
  • SLS (safe limited speed)
  • STO (safe torque off)
  • SDI (safe direction)
  • Safe Torque Off (STO)
  • Safe Brake Control (SBC)


Business Value

Due to the support of advanced protective functions and the certification for level SIL 3, our client can ensure the high failure tolerance of the device (1 per 10 million hours) together with higher productivity and lower system costs.

The device was based on the latest and widely available electronic components. With the adaptation to manufacturing and the preparation of all the necessary documentation, our client can launch the production of the first batch independently.

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