GAC IGC700 Series, Manual

Page: 15 / 18

15
Bar Graph flashing when power is applied to IGC700
This indicates the IGC700 configuration is corrupt. It is
recommended to reconfigure the unit before attempting to
start the engine.
Discrete Output Not Working
This terminal sinks current. The typical amount of sink
current is 20mA. This means the device being controlled with
this terminal must be tied to a positive voltage and must not
require more than 20mA to operate. This terminal turns on
when the IGC700 is running under normal conditions. If the
IGC700 overspeeds then this terminal switches to an open
circuit.
Engine Not Running at correct Fixed Speed .
1. Are Terminals R and S properly configured? If nothing
is connected to these terminals the IGC700 is configured
for Variable Speed. Please refer to TABLE 1 on page 3.
2.
Make sure the correct number of flywheel teeth has been
configured. This function is accessed in the SETUP
mode under MENU 0, button 5. The IGC700 will flash
out the current number of teeth as a 4-digit code. If this
number is not correct then enter the correct number of
teeth as a 4-digit number followed by the ENTER button.
3.
Make sure the Fixed Speed is correctly set. Access
SETUP mode and select MENU 0, Button 4. The
IGC700 will flash out the present RPM speed. If this is
not correct, enter the 4-digit speed in RPM and press
ENTER. The IGC700 will then flash the updated RPM
Speed.
Engine Not Running at Correct Variable Speed .

Make sure potentiometer is connected properly to
terminals I, J and K. Refer to the configuration section in
this manual to setup the potentiometer. When
configuring the potentiometer verify the RPM value
entered for MAXIMUM RPM SPEED (MENU 0, Button
7) is greater than the RPM entered for MINIMUM RPM
SPEED (MENU 1, Button 7). When doing this you
should also verify the Bar Graph displays a higher
reading for MAX. RPM SPD than for MIN. RPM SPD.

Make sure the FLYWHEEL TEETH parameter is correct.
This function is accessed in the SETUP mode (MENU 0,
Button 5). The IGC700 will flash out the current number
of teeth as a 4-digit code. If this number is not correct
then enter the correct number of teeth as a 4-digit number
followed by the ENTER button.
Overspeed During Starting (Tripping Fault LED)
This condition is caused by the OVERSPEED parameter
being too low, the IGC700 not properly
tuned for the
application or the CRANK TERMINATION parameter being
set too high. Recheck these parameters.
Overspeeding During Load Transient (Tripping Fault
LED)
OVERSPEED parameter is set too low or IGC700 not
properly tuned for the application. Recheck the
OVERSPEED setting and try retuning the engine.
Overspeeding During Speed Changes (Tripping Fault
LED)
OVERSPEED parameter is set too low or the SPEED RAMP
ACCELERATION parameter is set too low. You can
increase the Speed Ramp Value in SETUP mode (MENU 0,
Button 9). The Bar Graph will display the current Speed
Ramp setting. Press the + button to increase this value. This
causes the engine to accelerate more slowly reducing the
overshoot.
SETUP mode is not accessible
Press and hold the SETUP button until the RUN/LED lamp
starts to flash. Now you
must enter the valid 4-digit Security
Code [1] [2] [3] [4] followed by the ENTER button. Each
unit has a specific Security Code. If you forgot the code you
must contact your GAC distributor from where the IGC700
was purchased.
Note: The maximum RPM speed is based on the number of
teeth selected. Typically, the maximum RPM speed is 5000
to 6000 RPM.
Note: Each time one of these parameters is selected, you
must enter a 4-digit value.
Note: Once you’ve entered the proper code the IGC700 will
flash of the Software Version Number.