The ESD5550/5570 Series speed control unit is an all- electronic device designed to control engine speed with fast and precise response to transient load changes. 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. The primary features of the ESD5550/5570 Series speed control unit are the engine STARTING Fuel and SPEED RAMPING adjustments. The use of these features will minimize engine exhaust smoke experienced prior to attaining engine operating speed.
PERFORMANCE Isochronous Operation/Steady State Stability 025% or better Speed Range/Governor 1K-75K Hz continuous Speed Drift with Temperature1% Maximum Idle Adjust CW60% of set speed Idle Adjust CCWLess than 1200 Hz Crank Termination Adjustment Range300-2200 Hz Droop Range 1 - 5% regulation* Droop Adj Max (K-L Jumpered) 400 Hz, 75 Hz per 10 A change Droop Adj Min (K-L Jumpered)15 Hz, 6 Hz per 10 A change Speed Trim Range 200 Hz Remote Variable Speed Range 500 - 75 Hz or any part thereof Speed Switch Adjustment Range1000-10000 Hz Terminal Sensitivity J 100 Hz, 15 Hz / Volt @ 50 K Impedance L 735 Hz, 60 Hz / Volt @ 65 K Impedance N 148 Hz, 10 Hz / Volt @ 1 Meg Impedance P 10 VDC Supply @ 20 ma Max Speed Switch Adjustment Range 1000-10000 Hz INPUT POWER Supply 12 or 24 VDC Battery Systems (Transient and Reverse Voltage Protected)** Polarity Negative Ground (Case Isolated) Power Consumption 50 mA continuous plus actuator current Actuator Current Range @ 77F (25C) - (Inductive Load) Min 25Amps Max 10Amps continuous*** Speed Sensor Signal 05-120 Volts RMS Speed Switch Relay Contacts