Description
The ESD5550E GAC Speed Controller 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, can control a wide variety of engines in an isochronous or droop mode. Designed for high reliability and built ruggedly to withstand the engine environment.
ESD5550E GAC Speed Controller Series speed control unit features include:
- Simple installation
- Starting Fuel and Speed Ramping adjustments to minimize engine exhaust 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, accidental short circuit of the actuator and fail safe design in the event of loss of speed sensor signal or battery supply.
- Light Force Actuation (ESD5570 only)
The ESD5550E GAC Speed Controller Series speed control unit is compatible with all GAC proportional actuators (except ACB2001). When paired with a GAC ADC100 Series electric actuator, DROOP adjustment range is less due to the ADC100’s low current demand.
Specifications of the ESD5550E GAC Speed Controller
- Isochronous / Steady State
- Stability ± 0.25 % or better
- Speed Range / Governor 1 K – 7.5 K 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 Adjustment MAX (K-L Jumpered) 400 Hz, ±75 Hz per 1 A change
- Droop Adjustment MIN (K-L Jumpered) 415 Hz, ±75 Hz per 1 A change
- Remote Variable Speed Range 500 – 7.5 Hz or any part thereof
- Speed Trim Range ± 200 Hz
- Operating Voltage 12 V DC or 24 V DC (Transient and Reverse Voltage Protected)*
- Polarity Negative Ground (Case Isolated)
- Power Consumption 50 mA continuous plus actuator current
- Actuator Current Range at 77 °F (25 °C) – Inductive Load Minimum 2.5 A 10 A Peak**
- Speed Sensor Signal 0.5 to 120 V RMS
- Speed Switch Relay Contacts (N.O. and N.C.) 10 A
- Vibration 5 g @ 20 – 500 Hz
- Testing 100% Functional Testing
- Ambient Temperature Range -40° to 85 °C [-40° to 180 °F]
- Relative Humidity up to 95 %
- Shock 20 g @ 11 ms
- All Surface Finishes Fungus Proof, Corrosion Resistant
- Weight 1.8 lbf [0.82 kgf]
