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.
Input | Supply | 12 or 24 VDC Battery System (Transient and Reverse Voltage) |
Polarity | Negative Ground (Case Isolated) | |
Power Consumption | 50 ma continuous plus actuator current | |
Actuator Current Range @77°F (25 °C) - (Inductive Load) | Min.2.5 Amps; Max. 10Amps continuous | |
Speed Sensor Signal | 0.5-120 Volts RMS | |
Speed switch Relay contacts(N.O.and N.C) | 10 Amps ( Rated power is biger than ESD5500) | |
Performance | Isochronous Operation/Steady State Stability | ±0.25% or better |
Speed Range/Governor | 1K to 7.5K Hz continuous | |
Speed Drift with Temperature | ±1% Max | |
Idle Adjust CW | 60% of set speed | |
Idle Adjust CCW | Less than 1200 Hz. | |
Droop Range | 1-5% regulation | |
Droop Adj. Max. (K-L Jumpered) | 400 Hz., ±75Hz. Per 1.0A change | |
Droop Adj. Min. (K-L Jumpered) | 15Hz., ±6Hz. Per 1.0A change | |
Speed Trim Range | ±200 Hz | |
Remote Variable Speed Range | 500 - 7.5 Hz. Or any part there of Terminal Sensitivity | |
Terminal Sensitivity J | 100 Hz., ± 15Hz / Volt @ 5.0 K Impedance | |
Terminal Sensitivity L | 735 Hz., ±60 Hz / Volt @ 65 K Impedance | |
Terminal Sensitivity N | 148 Hz., ±10 Hz / Volt @ 1 Meg. Impedance | |
Terminal Sensitivity P | 10 VDC Supply @ 20 ma Max | |
Speed witch adjustment range | 1000-10000HZ | |
Environmental | Ambient Operating Temperature Range | -40 to +180°F(-40°+85 °C) |
Relative Humidity | Up to 95% | |
All Surface Finishes | Fungus Proof and Corrosion Resitant | |
Reliability | Vibration | 1G @ 20 to 100 Hz. |
Testing | 100% Functionally Tested | |
physical | Dimensions | See outline (FIGURE 1) |
Weigh1 | 1.8 lbs.(820 grams) | |
Mounting | Any position, Vertical Preferred |