Omron has introduced its Junma series of ultra-compact servo drives. With drive footprints starting at just 140mm by 35mm they are significantly smaller than competing products. Junma offers two drive types – Junma ML-II with built-in motion bus, and Junma PULSE, a traditional pulse type input drive designed to be used with position controllers. Both the Junma ML-II and Junma PULSE servo drives are available in four power output ratings - 100W, 200W, 400W and 750W.
A novel self-tuning feature, involving a speed loop calculation and mechanical resonance filter, avoids to adjust the control parameters to match the load characteristics of a particular axis. Manual adjustment is imperfect as it is not always easy to determine a machine’s characteristics with any accuracy. Tuning the parameters on a servo drive to match the machine under varying load conditions is also complicated and time consuming.
A built-in Mechatrolink II motion control bus also facilitates remote servo configuration and diagnosis. Combining the Junma ML-II with Omron’s NCF positioning unit delivers a complete point-to-point positioning system, offering 16-axes of positioning with linear interpolation, as well as interrupt feeding.