GAC ESD5550 Series Manual

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1Governors America Corp. © 2020 Copyright All Rights ReservedESD5550-5570 Series Speed Control unit 9-2020-E PIB1003ESD5550 & ESD5570 SeriesSpeed Control Unit2 SPECIFICATIONSPerformanceIsochronous / Steady StateStability ± 0.25 % or betterSpeed Range / Governor 1 K - 7.5 K Hz continuousSpeed Drift with Temperature ±1 % MAXIdle Adjust CW 60 % of set speedIdle Adjust CCW Less than 1200 HzDroop Range 1 - 5 % regulationDroop Adjustment MAX(K-L Jumpered)400 Hz, ±75 Hz per 1 A changeDroop Adjustment MIN(K-L Jumpered)415 Hz, ±75 Hz per 1 A changeRemote Variable Speed Range 500 - 7.5 Hz or any part thereofSpeed Trim Range ± 200 HzTerminal Sensitivity JLNP100 Hz ±15 Hz/V @ 5.0 kΩ Impedance735 Hz ±60 Hz/V @ 65 kΩ Impedance148 Hz ±10 Hz/V @1 MΩ Impedance10 V DC Supply @ 20 mA MAXInPUT / oUTPUTOperating Voltage 12 VDC or 24 VDC (Transient andReverse Voltage Protected)*Polarity Negative Ground (Case Isolated)Power Consumption 50 mA continuousplus actuator currentActuator Current Range at 77 °F(25 °C) - Inductive LoadMinimum 2.5 A10 A Peak**Speed Sensor Signal 0.5 to 120 V RMSSpeed Switch Relay Contacts(N.O. and N.C.)10 A1 INTRODUCTIONreLIaBILITYVibration 5 g @ 20 - 500 HzTesting 100% Functional TestingenvIronmenTaLAmbient Temperature Range -40° to 85 °C (-40° to 180 °F)Relative Humidity up to 95 %Shock 20 g @ 11 msAll Surface Finishes Fungus Proof, Corrosion ResistantcomPLIance / STanDarDSAgency CE, RoHS, Lloyds Register,DNV/GL, Bureau VertasPHYSIcaLDimension See Section 3, InstallationWeight 1.8 lbf (0.82 kgf)Mounting Any position, vertical preferredThe ESD5550/5570 series speed control unit is an all electronic device de-signed to control engine speed with fast and precise response to transientload changes. This closed loop control, when connected to a proportionalelectric actuator and supplied with a magnetic speed sensor signal, can con-trol a wide variety of engines in an isochronous or droop mode. Designedfor high reliability and built ruggedly to withstand the engine environment.ESD5550/5570 Series speed control unit features include:• Simple installation• Starting Fuel and Speed Ramping adjustments to minimize engine ex-haust smoke prior to attaining engine operating speed• Adjustable droop and idle operation• Inputs for accessories used in multi-engine or special applications• Protection against reverse battery voltage, transient voltages, acciden-tal short circuit of the actuator and fail safe design in the event of loss ofspeed sensor signal or battery supply.• Light Force Actuation (ESD5570 only)The ESD5550/5570 Series speed control unit is compatible with all GACproportional actuators except the ACB2001 electric actuator. When pairedwith a GAC ADC100 Series electric actuator, DROOP adjustment range isless due to the ADC100’s low current demand.* Protected against reverse voltage by a series diode. A 15 amp fuse must be installed inthe positive battery lead.** Protected against short circuit to actuator (shuts off current to actuator), unit automati-cally turns back on when short is removed.