2026 Three Items Set Diesel Generator Engine Governor Kits ADC120 Actuator ESD5500E Speed Controller 3034572 PickUp Speed Sensor

The ESD5500E 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.

Simplicity of installation and adjustment was foremost in the design. Non-interacting performance controls allow near opti

mum response to be easily obtained.

The primary features of the ESD5500E 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. Other features include 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.

The ESD5500E Series speed control unit is compatible with all GAC proportional actuators except the ACB2000 electric actuator. When the ESD5500E Series speed control unit is used with a ADC100 Series electric actuator, the DROOP adjustment range will be less due to this actuator's low current demand.

DESCRIPTION

Engine speed information for the speed control unit is usually received from a magnetic speed sensor. Any other signal generating device may be used provided the generated frequency is proportional to engine speed and meets the voltage

input and frequency range specification. The speed sensor is typically mounted in close proximity to an engine driven ferrous gear, usually the engine ring gear. As the teeth of the gear pass the magnetic sensor, a signal is generated which is proportional to engine speed.

Signal strength must be within the range of the input amplifier.

An amplitude of 0.5 to 120 volts RMS is required to allow the unit to function within its design specifications. The speed

signal is applied to Terminals C and D of the speed control unit.

Between these terminals there is an input impedance of over 33,000 ohms. Terminal D is internally connected to Terminal

E, battery negative. Only one end of the shielded cable should be connected.

When a speed sensor signal is received by the controller, the signal is amplified and shaped by an internal circuit to provide

an analog speed signal. If the speed sensor monitor does not detect a speed sensor signal, the output circuit of the speed

control unit will turn off all current to the actuator.