GAC EEG7500, Manual

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Governors America Corp. © 2021 Copyright All Rights Reserved
EEG7500 Enhanced Electric Governor 8-2021-A8 PIB5115
Once the parameter settings are reviewed and updated as required, start your engine.
1. Crank the engine with DC power applied to the governor system.
2. Set the engine at operating speed with no load.
3. The actuator/ fuel to the engine will be positioned to the level set by the Actuator Start Fuel parameter (default is MAX fuel). Actua -
tor Ramp Rate controls the rate at which fuel is increased to start the engine. Set it 10 % by default.
4. If the engine is unstable after starting, open the GAConfig Tool and adjust Gain, Stability, and Deadtime in the Engine Tuning menu
in the PID Tuning block, until the engine is relatively stable.
5. Once the engine is stable you can connect additional devices and further optimization.
Use an overspeed shutdown device, independent of the governor system, to prevent loss of engine control which may cause
personal injury or equipment damage. Do not rely exclusively on the governor system electronic actuator to prevent overspeed.
A secondary shutoff device, such as a fuel solenoid must be used.
ParameTer ranGe DefaULT DefInITIon
control mode
Operating Mode
NFSC, FSC,
or PC
NFSC
Operating mode of the actuator. requires restart of the eeG7500 for changes to take
effect .
H-Bridge Mode Bridge Half Bridge
SeT-UP
Flywheel Teeth 60 - 250 120 Number of teeth on the engine flywheel. This should be set prior to starting the engine.
Overspeed 600 - 6000 1800
rpm set to cause automatic engine shut down. Set this value low enough to prevent mechan-
ical damage but high enough to allow realistic load rejection speeds without stopping the
engine.
Fuel Limit 0 - 100 100 % Maximum fuel output.
STarT-UP
Actuator Start Fuel 1 - 100 % 100 % Initial actuator position at start of crank.
Actuator Ramp Rate 1 - 100 % 10
%
The rate of change for the actuator start from the throttle begin point to 100%, during the start/
crank cycle (% / s)
Starter Cutoff 100 - 1000 400
The rpm at which governor switches from starting to governing. Also known as crank termina -
tion.
Acceleration 25 - 2000 300 Rate of acceleration controlled by the governor when a command to increase rpm is received.
Deceleration 25 - 2000 300 Rate of deceleration controlled by the governor when a command to decrease rpm is received.
Once the control mode for your actuator is selected, the following minimum parameters must be set, or the default settings used, before
starting the engine. GAC suggests using the default settings to first ensure the engine runs smoothly before adding additional devices.
However, you may want to update default settings and additional parameter value depending on the engine, before starting the engine.
oTHer DefaULT SeTTInGS
ParameTer DefaULT ParameTer DefaULT
Speed 1 1500 Gain 1, 2, and 3 50
Speed 2 1500 Stability 50
Speed 3 1500 Deadtime High
Variable Speed Minimum 1500 Lead Circuit On
Variable Speed 1500 Light Force Governor Enable Off
Variable Speed Gain 50 Variable Speed End Gain 50
Analog Input 1 0 - 5 V DC Input MIN 0 %
Speed Minimum 1500 Input MAX 100 %
Variable Speed Start Gain 50 Input Actual 0
Speed Maximum 1500
9
INITIAl SYSTEM SETUP
(conTInUeD)
STarT YoUr enGIne
I/o confIGUraTIon DefaULT SeTTInGS