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EEG6500 Enhanced Electronic Governor 05.09.18 PIB 5010 F
INSTABILITY
INSTABILITY SYMPTOM PROBABLE CAUSE OF ABNORMAL READING
Fast Periodic
The engine seems to jitter with
a 3Hz or faster irregularity of
speed.
1.
2.
Readjust the GAIN and STABILITY for optimum control.
In extreme cases, change the DEADTIME parameter.
Slow Periodic
Speed irregularity below 3Hz.
(Sometimes severe)
1.
2.
Check fuel system linkage during engine operation for:
a. binding
b. high friction
c. poor linkage
DEADTIME Parameter set too high.
Non-Periodic Erratic Engine Behavior
1. Increasing the GAIN should reduce the instability but not totally correct it. If this is the case, there is most
likely a problem with the engine itself.
Check for:
a. engine mis-firings
b. an erratic fuel system
c. load changes on the generator set voltage regulator.
If unsuccessful in solving instability, contact GAC for assistance.
GAC@governors-america.com or call: 1-413-233-1888
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SYSTEM TROUBLESHOOTING
If the engine governing system does not function, the fault may be determined by performing the voltage tests described in Steps 1 through 3. Positive (+) and negative (-) refer to meter
polarity. Should normal values be indicated during troubleshooting steps, then the fault may be with the actuator or the wiring to the actuator. Tests are performed with battery power on and
the engine off, except where noted. See actuator publication for testing procedure on the actuator.
SYSTEM INOPERATIVE
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J1939 CAN INFO
J1939 Address: 26
PGN DEFINITION NOTES
61444 Engine Speed Engine speed in RPM
For all other codes, note the condition and contact GAC. The WARNING indicator will blink and failures will cause a system shut down.
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FAULT CODES
ADVANCED MENU PARAMETERS (CONFIGURABLE)
CODE CAUSE EFFECT CUSTOMER ACTION
1
Actuator over current (continuous)
Actuator turned off for 30 sec. Check actuator wiring.
2
Loss of speed signal (inc/dec in speed by more than
64Hz in 4ms, 16KHz/s)
WARNING indicator blinks then system shutdown Check speed pickup.
3
Over speed (speed exceeds OVER SPEED setting
for 12 ms)
WARNING and OVER SPEED indicators blink
then system shutdown.
Check fuel system as well as
OVER SPEED, SPEED, and V.SPEED
203
Variable Speed settings are reversed. V.SPEED is
lower than SPEED.
WARNING indicator blinks, speed set to V.SPEED
setting, variable speed input unresponsive.
Flip V.SPEED and SPEED settings.
206
No potentiometer/signal detected on variable speed
input when VSPD enabled.
WARNING indicator blinks, speed set to SPEED
setting.
Check potentiometer wiring.
241 New software loaded. Configuration not compatible. Default configuration used. Reset configuration.
251 Software loaded on incompatible hardware. WARNING indicator blinks then System shutdown. Return unit to GAC
307 FLCU / NLCU Setting invalid Load calculation done with 0.5 & 4.0 amp values Adjust NLCU / FLCU per section 9
IMPORTANT
STEP WIRES NORMAL READING PROBABLE CAUSE OF ABNORMAL READING
1 F(+) & E(-)
Battery Supply
Voltage
(12 or 24V DC)
1.
2.
3.
DC battery power not connected. Check for blown fuse
Low battery voltage
Wiring error
2 C & D
1.0V AC RMS min.
While Cranking
1.
2.
3.
4.
Gap between speed sensor and gear teeth too great
Improper or defective wiring to the speed sensor
Resistance between D and C should be 130 to 1200 ohms.
Defective speed sensor.
3 F(+) & A(-)
1.0 - 2.0V DC
While Cranking
1.
2.
3.
4.
5.
SPEED or IDLE parameter set incorrectly
CRANK or START FUEL set incorrectly
Short/open in actuator wiring
Defective speed control
Defective actuator, see Actuator Troubleshooting
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