Technical Information
ESD-5550/5570 Series - Speed Control Unit
Table 1.
ESD-5550/5570 Series Speed Control Units
Starting Fuel
Control
Speed
Ramping
Single Element
Speed Switch
(Overspeed)
2 Element Speed
Switch
(Overspeed &
Crank
Termination)
For Use with a
Light Force
Actuator
Interator Wind-
Up Protection
ESD-5550 • • •
ESD-5555 • • • •
ESD-5556 • • • • •
ESD-5570 • • • •
INSTALLATION
The speed control unit is rugged e
nough to be placed in a control cabinet or engine mounted
enclosure with other dedicated control equipment. If water, mist, or condensation may come in
contact with the controller, it should be mounted vertically. This will allow the fluid to drain away
from the speed control unit. Extreme heat should be avoided.
An overspeed shutdown device, independent of the governor system, should be provided to
prevent loss of engine control, which may cause personal injury or equipment damage. Do not rely
exclusively on the governor system electric actuator to prevent overspeed.
A secondary shutoff device, such as a fuel solenoid, must be used.
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