Atkinson Electronics GSCM Manuale - Pagina 8

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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 GSCM

ADJUSTMENT CHART, which describes each adjustment LED and the setting that it refers to. Connect your digital volt

meter between the test point and ground (terminal 15) 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 advanced up or down buttons allows the user to scroll through the ten settings, reading the 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 can be changed

by pressing either the up button to increase the value or the down button to decrease the value. See chart in GSCM

ADJUSTMENT CHART.

5. To store the new value, press the change/ store button once again, and the new value is then stored to the memory. If

you do not want to modify the value, but have pressed the change/ store button by accident, pressing the change/ store

button will restore the displayed value and take you out of change 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 AUTOMATIC STARTING FOR BATTERY CHARGING section: 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 AUTOMATIC STARTING FOR BATTERY

CHARGING section: 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 0VDC, 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 GSCM Reset Conditions: 6 will restore the time delays.

10. Switched signal using the battery voltage sensing input such as application 5 and application 6 requires that 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 mode and the start LED blinks once each 5 seconds to

indicate that the GSCM is ready to receive a manual or auto start signal. See GSCM STARTING SEQUENCE section.

12. During the ready 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 three push buttons are ignored except in the adjustment mode described above.

GSCM Reset Conditions

1. Shorting the reset 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) it must pass before the

generator can start again.

2. Shorting the reset terminals during this delay period terminates the period and puts the GSCM into ready mode waiting

for a new start command signal.

3. Shorting the reset terminals momentarily while the generator is running terminates the run command and the GSCM

causes the generator to go through a normal shutdown sequence.

4. Shorting the reset 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.

5. Resetting the GSCM for 30 seconds while in the ready 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.

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Circuit Board Division

Revised 09/18