Repair of frequency inverters, touch panels & monitors

We repair frequency inverters all manufacturers, e.g. from

    • SEW
    • Indramat (Bosch-Rexroth)
    • Siemens
    • Danfoss
    • Lenze
    • ABB
    • Demag
    • Vacon
    • Mitsubishi
    • KEB
    • and more

      Even so we repair touchpanels and monitors professionally. We process your order fastly and uncomplicatedly.

      on site or in our workshop: As an engineering office/technical service provider, we repair frequency converters and other electrical/electronic components and devices from all manufacturers for you or your customers.

      Benefit from our many years of experience.

Frequency converters

Our activities:

  • Voltage-free pre-test measurements and checking for visible mechanical or electrical damage.
  • Securing accessible parameter settings and programs.
  • Evaluation and backup of the error memory.
  • Electrical test according to specified test instructions.
  • Troubleshooting and analysis of the cause of damage.
  • Cleaning of the housing and electrical components (if necessary).
  • High-voltage test, function test and an endurance test under load and heat according to defined test specifications.

Uncomplicated procedure

  • Step 1:
    Simply call us on weekdays between 8:30 a.m. and 5:00 p.m. (+49(0)211 17607186), send us an e-mail ( or use the contact form.
    Tell us the manufacturer and type and we will let you know whether the frequency inverter can be repaired and, depending on your description, whether it is also worthwhile economically. In case of doubt we can offer you a replacement at favourable conditions.
  • Step 2:
    Send us the frequency inverter or use our collection and delivery service.
  • Step 3:
    Within one working day you will receive a binding offer for the repair of your frequency inverter.

Why ATG Engineering?

  • We are also very familiar with older models and can help reliably and quickly.
  • Many years of close cooperation with the manufacturers of your drive technology and other service providers enable us to repair almost all frequency inverters, to procure even rare spare parts and to deliver your device back to you ready for operation.

Repair of the frequency inverter from …

  • Siemens
  • ABB
  • Fanuc
  • SEW Eurodrive
  • Lenze
  • Baumuller
  • Indrama
  • Parvex
  • CT Control Techniques / Emerson
  • LIB
  • …and more.
  • SEW Frequency inverter

    Movidrive & Movitrac from SEW for example:

    • 31B015-503-4-00
    • 31B030-503-4-00
    • 31B040-503-4-00
    • 31C015-503-4-00
    • 31C022-503-4-00
    • 31C030-503-4-00
    • 31C040-503-4-00
    • 31C055-503-4-00


    Repair of servo motors and spindle drives with original manufacturer software.


    Geared motors: Project planning & Sales

    Siemens frequency converters

    Of course we also offer repairs for the frequently used frequency converters Micromaster and Midmaster by Siemens for example:

      • Micromaster 440
      • Micromaster 430
      • Micromaster 420
      • Micromaster 410
      • Micromaster 6se9213-…
      • Micromaster vector 6se32….
      • more

    Danfoss frequency converters

    We offer repairs for Danfoss frequency converters.

    • VLT28…
    • VLT3…
    • VLT5…
    • VLT6…
    • FC-301 & 302

    Own regular maintenance / cleaning

    More often than you might think, it is impurities that lead to defects, e.g. in the unit’s own cooling system, or to age-related wear and tear, such as condensers drying out. The end result is the total loss of the power output stages and the energy supply. Therefore, the following applies: In drive technology, frequency inverters, drives etc. can be kept in operation for a long time by regular expert maintenance and preventive measures.

    After professional cleaning and the replacement of typical wear parts, the appearance of many devices can be greatly improved.

    We show you here how you can increase the service life of your drive technology with little effort: gearbox maintenance

    If necessary, it is also possible to hire out replacement units (if in stock) during preventive maintenance!

    Lenze frequency inverters

    We naturally also offer repairs for Lenze frequency inverters.

    • EVF82..-E
    • E82EV751
    • E82EV553K4B201
    • 8200 Vector

    Based on our many years of experience, we also carry out repairs on frequency inverters from other manufacturers. Because let’s be honest: The components are the same/similar!