GAC EEG6500 Manual - Halaman 6

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FAULT CODES

CODE

Actuator over current (continuous)

Loss of speed signal (inc/dec in speed by more than

64Hz in 4ms, 16KHz/s)

Over speed (speed exceeds OVER SPEED setting

for 12 ms)

Variable Speed settings are reversed. V.SPEED is

203

lower than SPEED.

No potentiometer/signal detected on variable speed

206

input when VSPD enabled.

241

New software loaded. Configuration not compatible.

251

Software loaded on incompatible hardware.

307

FLCU / NLCU Setting invalid

IMPORTANT

For all other codes, note the condition and contact GAC. The WARNING indicator will blink and failures will cause a system shut down.

J1939 CAN INFO

J1939 Address: 26

PGN

DEFINITION

61444

Engine Speed

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.

STEP

WIRES

NORMAL READING

Battery Supply

F(+) & E(-)

(12 or 24V DC)

1.0V AC RMS min.

C & D

While Cranking

1.0 - 2.0V DC

F(+) & A(-)

While Cranking

INSTABILITY

SYMPTOM

The engine seems to jitter with

Fast Periodic

a 3Hz or faster irregularity of

speed.

Speed irregularity below 3Hz.

Slow Periodic

(Sometimes severe)

Non-Periodic

Erratic Engine Behavior

ADVANCED MENU PARAMETERS (CONFIGURABLE)

CAUSE

Engine speed in RPM

DC battery power not connected. Check for blown fuse

Voltage

Low battery voltage

Wiring error

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.

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

Readjust the GAIN and STABILITY for optimum control.

In extreme cases, change the DEADTIME parameter.

Check fuel system linkage during engine operation for:

a. binding

b. high friction

c. poor linkage

DEADTIME Parameter set too high.

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.

[email protected] or call: 1-413-233-1888

EFFECT

Actuator turned off for 30 sec.

WARNING indicator blinks then system shutdown

WARNING and OVER SPEED indicators blink

then system shutdown.

WARNING indicator blinks, speed set to V.SPEED

setting, variable speed input unresponsive.

WARNING indicator blinks, speed set to SPEED

setting.

Default configuration used.

WARNING indicator blinks then System shutdown.

Load calculation done with 0.5 & 4.0 amp values

NOTES

SYSTEM INOPERATIVE

PROBABLE CAUSE OF ABNORMAL READING

INSTABILITY

PROBABLE CAUSE OF ABNORMAL READING

EEG6500 Enhanced Electronic Governor 05.09.18

CUSTOMER ACTION

Check actuator wiring.

Check speed pickup.

Check fuel system as well as

OVER SPEED, SPEED, and V.SPEED

Flip V.SPEED and SPEED settings.

Check potentiometer wiring.

Reset configuration.

Return unit to GAC

Adjust NLCU / FLCU per section 9

PIB 5010 F