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GENERATOR START CONTROL MODULE
GSCM INITIALIZATION AND ADJUSTMENT
1.
Powering up the GSCM with a jumper placed on reset terminals 7 and 8 will cause it to enter the adjustment mode. When
the crank delay LED is lit the GSCM will accept timing modifications to any of the factory settings. (See diagram in Section-8,
which describes each adjustment LED and the setting that it refers to.) Connect your digital volt meter between the test point
and ground to read the settings.
2.
In the adjustment mode, the GSCM first lights the crank delay LED and outputs the current setting value to the test point
where it can be read with the digital volt meter.
3.
Pressing the 'Advance' button allows the user to scroll through the ten settings, reading each setting value with the meter.
4.
To change a stored setting, scroll to the desired setting indicated by the LED. Press the 'Change/Store' button once. The
LED will then begin to blink indicating the unit is ready to accept a new value. The test point voltage now reflects the value
of the potentiometer and should be adjusted to the desired 0 to 5V DC value as shown on the chart in Section-8.
5.
To store the new value, press the 'Change/Store' button once again, and the new value is then stored to the memory. If the
'Change/Store' button is not pressed within 30 seconds, the new value is discarded and the unit will go back to the adjustment
mode. If you do not want to modify the value, but have pressed the 'Change/Store' button by accident, pressing the 'Advance'
button will take it out of this mode.
6.
To disable the 5 minute start delay timer used in battery charging applications, jumper between terminals 15 and 16 (override
12 hour shutdown) while adjusting the "cut-in" voltage set point. Remove jumper after the new cut-in adjustment has been
stored (see Section-3:1-3).
7.
To disable the 10 minute stop delay timer, jumper between terminals 15 and 16 while adjusting the "cut-out" voltage set point.
Remove jumper after the new "cut-out" adjustment has been stored (see Section-3:1-3).
8.
To disable the Over/ Under Hz fault shutdown, advance to the Low Hz position, press the change/store button, (led blinks)
and set the test point voltage to 0V DC, store setting, advance to High Hz position and set to zero volts, both must be set.
9.
To re-enable the 5 and 10 minute time delays, the GSCM must enter adjustment mode as in paragraph 1 of this section and
then the cut-in and cut-out adjustment re-entered and stored without the jumper between terminals 15 and 16. Restoring the
GSCM factory default values as described in Section-5:6 will restore the time delays.
10. Switched inputs using the battery voltage sensing input such as Application 5 and Application 6 require the cut-in and cut-out
adjustments to be set to +5V @ Test Point while in setup mode.
11. After scrolling through all the settings to verify that any changes made have been stored, removing the reset jumper on reset
terminals 7 and 8 will cause the GSCM to enter the "Ready to Receive a Command Mode" (see Section-1) and the start LED
blinks once each 5 seconds to indicate that the GSCM is ready to receive a manual or auto start signal.
12. During the "Ready to Receive a Command Mode", applying a reset of 30 seconds by shorting the reset terminals will start
the 30 day exercise period if it has been selected by adjusting the exercise time above a zero volt signal. Short term GSCM
module power interruptions will not change this 30 day exercise cycle start time.
13. The potentiometer and push buttons are ignored except in the adjustment mode described above.
14. The adjustment mode is terminated by removing the reset jumper. See paragraph 10 above.
GSCM RESET CONDITIONS
1.
Shorting the reset/adj. terminals momentarily when the GSCM is starting, but not yet running, causes the generator start
sequence to terminate and a 60 second delay period (with the start LED blinking rapidly) must pass before the generator can
start again. Shorting the reset/adj. terminals during this delay period terminates the period and puts the GSCM into waiting
for a new start command signal.
2.
Shorting the reset/adj. terminals momentarily while the generator is running terminates the run command and the GSCM
causes the generator to go through a normal shutdown sequence.
3.
Shorting the reset/adj. terminals momentarily while the generator is locked out in a fault condition terminates the shutdown
and enters a 60 second delay period (with the start LED blinking rapidly) before the generator can start again.
4.
Resetting the GSCM for 30 seconds while in the "Ready to Receive a Command Mode" is required to start the 30 day exercise
period after which the 30 day LED blinks if it has been selected by adjusting the exercise time above a zero volt signal.
5.
Resetting the GSCM for 60 seconds by shorting terminals 7 and 8 while in the "Ready to Receive a Command Mode" forces
the GSCM back to the original factory default settings 'as it came out of the box'. The adjustment LED's blink once in
sequence to indicate a return to default settings.
6.
An alternate set of "test adjustments" may be selected by performing Step 5 above and holding down the Change/Store button
just before releasing the 60 second reset. The Change/Store button is released after the reset release when several of the
adjustment LED's blink. The "test parameters" are:
- Maximum Crank = 7 seconds
- Battery Cut-In Delay = 1 minute
To exit the "test parameters" operation the user must perform Step 5 above to return to factory defaults.
ATKINSON ELECTRONICS, INC.
Web Site: www.atkinsonelectronics.com
- Load Delay = 20 seconds
- Battery Cut-Out Delay = 2 minutes
Distributed by:
SECTION - 4
SECTION - 5
- Pre-Cool Off Delay = 10 seconds
- 12 Hour Run Time = 1 hour
GSCM
REV 8/06