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15. The GSCM will start a 30day exercise period of up to 1 hour run time, if the exercise time is set above 0 minutes (above 0V

@ the test point, when in setup mode) and a reset has been applied for 30 seconds. If a DC voltage greater than 6V is

connected to either terminal 11 or 12 the GSCM will exercise the generator with load or without load (energizing K5 load

relay). If a voltage is not connected to either terminal, the GSCM will default to starting and running the exercise period

with the K5 load relay energized. The 30 day exercise LED blinks once every minute if the exercise function is activated.

The LED lights continuously and the open collector transistor switch (terminal 17) will pull in a user supplied 12 or 24VDC

relay depending on supply voltage (coil current not to exceed 180 milliamps) whenever the generator is running in

exercise mode. The 30 day exercise LED changes to a fast blink 60 seconds before the GSCM starts the generator in

exercise mode.

16. If the DC voltage connected to either terminals 11 or 12 is supplied by a solar panel, the 30 day exercise will start in the

morning when the solar panel's voltage exceeds the 6VDC threshold voltage after the 30 day exercise cycle period has

been reached. Otherwise the start cycle will be 30 days, +/- several hours after the module was powered up and the reset

applied for 30 seconds to activate the 30 day exercise routine. Not having a solar panel connected to terminal 11 or 12

may allow the generator to start in the middle of the night, disturbing yours or your neighbors sleep.

17. Battery equalization can be accomplished by using a relay on the 30 day exercise terminal 17 to switch a separate charge

set to equalize mode, raising the battery voltage to equalization levels while the generator is running during its exercise

period, (set exercise time to maximum of 60 minutes). A battery charger with an equalization operation is required for

this application.

GSCM Shutdown Conditions

The GSCM detects several fault conditions (detection not enabled until the generator has been running for 15 seconds) and will

immediately shutdown the generator, locking it out until a reset signal is received (shorting pins 7 and 8 momentarily). The open

collector transistor terminal 18 will energize a user supplied DC relay (not exceeding 180 milliamp coil current) whenever a fault

shutdown occurs and will de-energize the relay when the fault is reset. The shutdown conditions are as follows:

1. Failure to start with 4 cranking attempts. See GSCM STARTING SEQUENCE section: 4-5. The max crank/ max runtime fault

LED blinks rapidly.

2. Low oil pressure condition is detected 15 seconds after run condition is verified in the load delay period. Terminal 9 is

connected to ground by the oil pressure sensor. The emergency shutdown LED blinks slowly.

3. High temperature condition is detected 25 seconds after K5 (load transfer) relay is energized. Terminal 10 is connected to

ground by temperature sensor. The emergency shutdown LED blinks fast.

4. High frequency (over speed) condition (must be activated in setup mode). The generators AC frequency is monitored, 25

seconds after K5 (load transfer) relay is energized, on terminals 13 and 14. If the frequency exceeds the 15 to 75 Hz

adjustment for 10 seconds, the GSCM shuts down the generator and the frequency shutdown LED blinks rapidly. The over

Hz LED blinks during the 10 seconds it over frequency. The factory default setting is 0 de-activated.

5. Low frequency (under speed) condition (must be activated in setup mode). The generators AC frequency is monitored, 25

seconds after K5 (load transfer) relay is energized, on terminals 13 and 14. If the frequency drops below the 15 to 75 Hz

adjustment for 10 seconds, the GSCM shuts down the generator and the frequency shutdown LED blinks slowly. The

under Hz LED blinks during the 10 seconds it over frequency. The factory default setting is 0 de-activated.

6. Maximum runtime of 12 hours is exceeded See AUTOMATIC STARTING FOR BATTERY CHARGING: 5. The max crank/ max

runtime fault LED blinks slowly.

7. Loss of AC feedback signal while in run mode (K5 load relay energized). The GSCM begins monitoring the generator's AC

voltage 25 seconds after K5 (load transfer) relay is energized, on terminals 13 and 14. If the AC voltage is lost for more

than 60 seconds will cause the GSCM to go through its shutdown sequence. The generator Hz LED will blink three times,

rest, blink three times to indicate the fault condition. Possible causes: generator ran out of fuel, load tripped the

generators circuit breaker(s), broken or intermittent connection between the generator's AC connection points and the

GSCM's terminals 13 and 14.

www.atkinsonelectronics.com

800.261.3602

Circuit Board Division

Revised 09/18