Syntron® Electromagnetic Feeders - FMC Technologies

Syntron ® Electromagnetic Feeders (cont’d.)Sub-Resonant Tuning for Electromagnetic FeedersLow sub-resonant tuning is the keycharacteristic of Syntron ®electromagnetic feeders, makingthem the most stable and consistentfeeders available on the market.Feeder tuning involves adjustmentof the natural frequency of thefeeder in relationship to itsoperating frequency. If the operatingfrequency is greater than the naturalfrequency, the feeder is superresonanttuned, making it veryunstable under headload. Conversely,if the natural frequency is greaterthan the operating frequency, thefeeder is sub-resonant tuned, makingit more consistent and stable underheadload.Electromagnetic feeders are tunedthrough careful calculation of thenumber and thickness of the specialleaf springs required to accomplishthe desired tuning ratio.Regardless of manufacturer, allheavy-duty, two-mass electromagneticvibrating feeders are subresonanttuned. For sub-resonanttuned feeders, the distance fromresonance is critical to feeder performance.Most manufacturers tunetheir feeders closer to resonance,while Syntron electromagneticfeeders are tuned further fromresonance.The natural frequency of all Syntron ® Heavy-Duty Electromagnetic Feeders ischecked at our test stations before shipment.Material damping and othervariations in headload causefluctuations in capacity and feedrates of all sub-resonant tunedfeeders. Because Syntron electromagneticfeeders are tuned furtherfrom resonance, capacity and feedrates remain more stable and consistenteven when the feeder issubjected to material damping andother variations in headload.This is why Syntron electromagneticFeeders are the best solution forrugged material handlingapplications.6