GAC EEG7500, Руководство пользователя

Страница: 28 / 33

28
Governors America Corp. © 2021 Copyright All Rights Reserved
EEG7500 Enhanced Electric Governor 8-2021-A8 PIB5115
enGIne TUnInG
SeTTInG
oPTIonS DefaULT noTeS
control mode
Operating Mode NFSC, FSC, or
PM
NFSC System operating mode.
H-Bridge Mode Half or Full Half Sets system H-Bridge mode. Changes do not take effect until after system power cycle.
NFSC mode uses half bridge mode by default.
Set-Up
Flywheel Teeth 60 - 250 120 Number of teeth on the flywheel. The system can govern up to 12000 Hz.
Overspeed 150 - 6000 1800 rpm set to cause automatic engine shut down. Set this value low enough to prevent me-
chanical damage but high enough to allow realistic load rejection speeds without stopping
the engine. As a starting point this should be set to no more than 25 % above rated speed.
Fuel Limit 0 - 100 % 100 Maximum fuel (actuator duty cycle) allowed during governing. Use this parameter to pre -
vent over fueling after the engine has started. During normal starting cycles and short step
loads the function will not engage since there is a 1 s delay.
Start-Up/ramp control
Actuator Start Fuel 0 - 100 % 0 Actuator start point during cranking.
Actuator Ramp Rate 1 - 100 %/s 1 Fuel (actuator duty cycle) ramp rate during cranking.
Starter Cutoff 100 - 1000 rpm 400 Crank termination speed in rpm.
Acceleration 25 - 2000 rpm/s 300 Controls rate of acceleration in engine speed. A lower value rpm, allows for a gradual
increase in engine speed while a larger value of rpm provides faster acceleration.
Deceleration 25 - 2000 rpm/s 300 Controls rate of deceleration in engine speed. Lower rpm , allows for a gradual decrease in
response to engine speed while higher rpm create more rapid deceleration.
Speed Configuration
Speed Mode -- -- Use dropdown to select the mode you are setting as related to Tuning
Speed 1
Speed 2
Speed 3
0 - 6000
150 - 6000
150 - 6000
1500
1500
1500
Selected engine speed.
Speed Minimum
Speed Maximum
150 - 6000 rpm 1000 Minimum and Maximum speed settings.
Variable Speed Start Gain
Variable Speed End Gain
1 - 100
0 - 100
50
50
PID Gain to use when at the minimum speed while in variable speed.
PID Gain to use when at the Maximum speed while in variable speed.
Input Minimum 0 - 75 %. Must
be 25% apart.
0 Variable speed input position indicating minimum variable speed setting. Range: 0 to 75 %
and must be 25 % apart from end position. This can be calibrated automatically by select -
ing the Calibrate Minimum button.
Input Maximum 25 - 100 %. Must
be 25 % apart.
100 Variable speed input position indicating Maximum variable speed setting. Range: 25 to
100 % and must be 25 % apart from start position. This can be calibrated automatically by
selecting the Calibrate Maximum button.
Input Actual 0-100 % 50 Feedback of the current variable speed input position.
Gain 1 (P1)
Gain 2 (P2)
Gain 3 (P3)
1 - 100 50 Gain determines how fast the control responds to transient load changes or a load distur-
bance occurs.
Stability (I) 0 - 100 50 Stability changes the steady state response of the engine. Increasing stability allows the
system to come to steady state speed faster, while decreasing the stability results in a
more gradual transition to steady state speed.
Deadtime (D) Low - High High PID deadtime
Lead Circuit On - Off On Lead Circuit increases range of Gain adjustment improving governor response. Turn Lead
circuit ON when there is slow or moderate hunting at higher Gain settings.
Light Force Governing On - Off On Light Force Governor improves resolution when controlling small and low current actuators
including GAC T1 ATB, ALR/ALN, 100/103/104 series and normally closed actuators.
Speed Anticipation On - Off Off Speed anticipation ON reduces rpm recovery time during high load transients and requires
both no load (NLCU) and full load current (FLCU) values are entered.
feedback Speed control (fSc) fuel Limit
Enable FSC Table Checkbox and
link to table
The FSC Fuel Limit Table checkbox enables the variable speed fuel table. When enabled,
the table is utilized as a limiting function for the actuator position request coming from the
speed PID. The table must be filled in to be used.
GAC
onfig
TOOl - SETTING All VAlUES
Quick Configuration tab accesses all the parameter settings from one location. These descriptions relate to the GAConfig Tool menus.
19