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ESD-5500 Series speed governor

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The ESD-5500E Series speed control unit is an all electronic device designed to control engine speed with last and precise response to transient load changes.

Detailed information

Product detailed description

This closed loop control, when connected to a proportional electric actuator and supplied with a magnetic speed sensor signal, will control a wide variety of engines in an isochronous or droop mode. It is designed for high reliability and built ruggedly to withstand the engine environment.


  • A Two Element Speed Switch (overspeed sensing and crank termination)
  • Speed Ramping from Idle to Operating Speed
  • Starting Fuel Control for lower engine exhaust  emissions


  • A unique actuator power drive circuit