Our troubleshooting and repair includes three major components: electronic, electrical and mechanical. 

Electronic components include your resolver and or encoder, hall sensors, tacho generator.  Testing of each of these devices is critical with respect to the servo manufacture.   Readings on the sine, cosine and index outputs as well as counts per revolution, alignment and more depending on the device are monitored and recorded for repair integrity.

Electrical component testing begins with the surge and hipot the windings.  Next the BEMF test is performed.  BEMF is a characteristic of a servo motor that exists and is proportional to motor speed.  This test checks the rotors magnetic strength (Gauss).  If the magnets are found to be weak, they will be re-magnetized.

Mechanical component testing includes shafts, bearings and or holding brakes, fans and attachments.

Testing begins with a visual inspection of the motor and test run if previous components pass inspection.  Holding brake readings and shaft readings are compared to manufactures specifications.  Upon logging all testing and inspection findings the unit is disassembled for internal inspection as well as cleaning of the stator.  Micrometer readings of the end frames and bearing seats are recorded and compared to manufacture specifications.

Next we quote the repair before any assembly work is performed. Our basic repair includes balancing, load testing, cleaning, feedback alignment, new bearings and paint every time. 

After assembly, all of the inspection tests are recorded again and compared against the manufacture specifications.  Finally a QA test is performed before shipping.