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  • 1.  PdM for Servo motors

    Posted 21 days ago
    Hi Everyone,
    Are your reliability teams currently using predictive maintenance for servo motors? I would appreciate hearing about any success with continuous vibration monitoring, infrared, acoustic/ultrasound, or other PdM technologies to monitor machine health and provide early warning of failures.
    I've seen an article on bench testing using a meter, but I'm specifically interested in real-world experience using predictive technologies in operation.

     

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    Ryan McBride
    Manufacturing Reliability Manager
    Schreiber Foods
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  • 2.  RE: PdM for Servo motors

    Posted 18 days ago

    In my experience, the limiting factor is cycle time of the motors. It is tricky to capture stable vibration data for an FFT on something running for less than a minute. With infrared, short cycles do not usually allow heat to build. You might have success tracking the overalls for vibration and ultrasonics, maybe even use a system with event capture.  If I recall correctly, most of the early failure modes were detected with motor current analysis done on a period cycle.

    Something else to consider is what types of failures has your system experienced historically. Applying PdM technology from an RCA basis can really leverage your efforts.



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    Christopher Olsen
    Sr. EMR Technician
    CHA Consulting, Inc
    Fence WI
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    Original Message


  • 3.  RE: PdM for Servo motors

    Posted 16 days ago
    I just worked on a similar problem for a client. We went with MCE using MOTORDOC to track the servo performance. You might want to reach out to Howard Penrose for a discussion.



    Original Message


  • 4.  RE: PdM for Servo motors

    Posted 16 days ago

    I performed an RCA on an "Amsul" container loading system driven by a bidirectional hydraulic servomotor. The belt conveyor advances into the container during loading and retracts upon reaching the set fill level.

    The analysis revealed installation errors and the use of non-compliant repair parts. After corrective actions were implemented, no further issues occurred.

    Reviewing failure history can support early detection and proactive maintenance planning.

    Servomotor testing requires a dedicated test bench. Vibration analysis is challenging due to the time needed to acquire reliable frequency spectrum data.



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    Nicolae Mihai
    Pitești
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    Original Message


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