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SINAMICS DCM - Diagnostics and Repair (DR-DCM-REP)


  • Despite of high quality, components of power electronics may fail. Additionally, a line break down during regenerative operation may cause damage to a DC-converter. In many cases there is now demand for a fast repair. To a large extent the converters SINAMICS DCM can be repaired on site.
  • In this course you train the demounting and mounting of electrical and mechanical components which are provided for a replacement on site. You learn as well the approach to systematic trouble shooting and about the final verification of your repair. Therefore, you can act fast and target-oriented in the case of a damage.
Type Face-to-face training
Duration 5 days
Language en

Target Group

  • Service personnel (Siemens field service)


  • Replacement of components:
    • Control Units CUD standard and advanced
    • Power interface, field module, fan
  • Update to a new firmware version:
    • Control Unit CUD
    • STARTER-Project before download
  • Replacement of fuses, instructions for the right mounting
  • Thyristor diagnostics by the converter electronics
  • Check of single thyristors by instruments
  • Replacement of the thyristors in the armature circuit:
    • Units up to 30 A: Replacement of the complete modules
    • Units from 60 to 1200 A: Replacement of single thyristors
    • Units from 1500 A: Replacement of thyristor modules
  • Replacement of thyristor and diode modules in the field circuit
  • High voltage test after the replacement of thyristors and modules
  • Repair logistics:
    • Ordering of spare parts via SparesOnWeb
    • Checking of the availability of material via WebLogX
    • Repair report
  • Instructions for safety at work
  • Practical exercises using original units SINAMICS DCM:
    • Demounting and mounting of thyristors, fuses and fans
    • Replacement of electronic boards
    • Measuring and functional checks of the units


  • Good knowledge of SINAMICS DCM according to the courses DR-DCM-PM (formerly: DR-DCM-SI) or DR-DCM-U or DR-DCM-DG.
  • The participant must be an electrically skilled person


  • This course is offered exclusively for Siemens employees.
  • The authorization for repair as well as the permission for web services will be delivered by your responsible department.
  • Please bring your personal safety shoes, work gloves and work coat, as far as available.


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