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Repair of Mitsubishi Servomotors

Mitsubishi Servomotors

We test and repair Mitsubishi servomotors.
In addition, we also offer services for Mitsubishi servomotors.

We specialize in the following motor series:

  • HA (Example: HA103, HA203, HA303)
  • HA-NC (Example: HA33NC-TD, HA43NC-TD5)
  • HA-FE (Example: HA-FE13; HA-FE63)
  • HA-NCB (Example: HA43NCB-S, HA80NCB-SS)

Our repair process is preventive and includes a series of steps that contribute to ensuring high repair quality.

Error Analysis and Localization

What can you do?

Errors in Servomotors

Possible solutions and notes

  • Replace the motor on a trial basis.
  • Check cable connections.
  • Remove the motor from the shaft or belt and test at different speeds.
  • Check or replace the drive.
  • Perform an insulation test on the motor.
  • Visually inspect the motor.
  • Visually inspect the encoder area for dirt, optionally have it cleaned by a specialized company.
  • Check encoder signals: For older motors with analog encoders, read the sine diagrams with an oscilloscope.
    For serial encoders, also check the operating voltages.

If these measures do not help, the error is usually due to a faulty encoder or worn-out ball bearings.

Further error messages can be found in the alarm list available for download at the end of the form.

Possible solutions and notes

  • Remove the motor from the shaft or belt and test at different speeds.
  • Disconnect the motor connection cable and completely free the motor from loads. Then turn it by hand.
    If the motor is still stiff or makes unusual noises, the ball bearings may be defective.
  • Check the motor for insulation and windings for short circuits.
  • Check the encoder.

Further error messages can be found in the alarm list available for download at the end of the form.

Possible solutions and notes

  • Visually inspect the encoder area for dirt, have it cleaned by a specialized company if necessary.
  • Check encoder signals: For older motors with analog encoders, read the sine diagrams with an oscilloscope.
    For serial encoders, also check the operating voltages.
  • Have the encoder replaced

Further error messages can be found in the alarm list available for download at the end of the form.

Handling Parameters

When parameterizing, it is crucial to secure the settings early and also document jumper and key settings.
Parameter is set on the device

What to consider when parameterizing?

  • In most cases, the motor parameters are stored in the drive or the controller.
  • Obtain the appropriate documentation or software for setting the parameters.

The Typical Procedure for Repairing Mitsubishi Servo Motors

Visual inspection of the motor

The repair process for servo motors includes the following steps:

  • Preventive maintenance - replacing all necessary defective and worn parts. Renewing bearings and seals.
  • Intensive cleaning, paint stripping, and degreasing.
  • Repainting.
  • Comprehensive final and long-term tests on our test benches followed by final adjustment.
  • Completing documentation and checklists.

High-Quality Spare Parts for High-Quality Repairs

Thousands of spare parts in stock available to the technician.
                    In addition to simply replacing operationally stressed components, refurbishing worn parts makes sense,
                    as complex capital goods usually contain very valuable individual parts.
                    Replacing them with new parts consumes valuable resources and incurs high costs.

For Mitsubishi servo motors, we replace

  • Encoders
  • Encoder cables
  • Encoder connectors
  • Resolvers
  • Brakes
  • Bearings
  • Shaft seals
  • O-rings
  • Power cables
  • Power connectors

Additionally, we proactively replace certain components that have proven to be prone to recurrent defects.

To prevent shortages and product discontinuations, we monitor our inventory levels using process-oriented software solutions. We order some parts in advance and secure ourselves for up to a year with sufficient spare parts for series repairs.

Quality and Level of Repair

Professional repairs require the use of a test bench. For each new series, a custom and complex test equipment is developed. The devices are thoroughly checked for functionality by undergoing a long-term test.
Final test with the test drive

The test is conducted on a state-of-the-art test bench that almost completely replicates the workflows of a real machining machine with Mitsubishi control.

Tested are:

  • Encoder connection
  • Alarm states
  • Speed
  • Current and voltage consumption
  • Temperature
  • Vibration
  • Noise level

We Continuously Expand Our Repair Portfolio with New Series

As drive and power electronics are often phased out early, supply bottlenecks occur and you may be under pressure to provide your customers with replacements in a timely manner. We support you in analyzing bottlenecks and working together on optimal solutions.

The typical procedure includes:

  • Development of test benches and procedures.
  • Organization of spare parts.
  • Preventive repairs at the component level.
  • If necessary, new development or re-engineering of modules or complete devices.

You can contact us in the following way:

Chat with our customer support, write us a message: [email protected] or call us: +49 6251 9888430