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GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire)

GSCM-mini IGNITION/CRANK STARTING SEQUENCE (Relay Option #3)

When the manual start signal is removed, K2 relay de-energizes opening the ignition circuit shutting down the generator. The

GSCM-mini then monitors the Generator AC Hz input to watch for a zero Hz condition before returning to "Ready" mode. If the AC

signal remains the GSCM-mini's Generator HZ LED turns on indicating AC Hz. Signal still present and will not return to Ready mode

until the AC signal goes to zero. Once it goes to zero the GSCM-mini returns to "Ready' mode.

10. The generator remains off until another start signal is received.

AUTOMATIC STARTING FOR BATTERY CHARGING

The GSCM-mini-50hz can monitor either the generator battery voltage or a battery bank voltage and automatically start/stop the

generator based on battery voltage. This is accomplished by connecting the battery voltage to the battery sense input (terminal 4). The

GSCM-mini monitors a battery voltage range of 0 to 60V DC and automatically determines the start and stop set point based on battery

voltage (12, 24, or 48VDC systems). Below 16VDC - 12V thresholds, between 16 to 32V - 24V thresholds, above 32V - 48V thresholds.

This mode is disabled if the voltage on terminal 4 is less than 6V, (no connection).

The GSCM-mini monitors the battery sense input and when the battery voltage drops below the start threshold the Start LED begins

blinking (every second). When the battery voltage has remained below the start threshold for 5 continuous minutes the Auto start

sequence begins.

If the battery voltage rises above the start threshold during the 5 minute period the period starts over.

(Temporary battery voltage fluctuations such as instantaneous inverter loads will not start the GSCM-mini)

The GSCM-mini starts the generator based on the relay configuration (as described in Sections 1, 2, or 3). The start LED blinks

every 3 seconds while the GSCM-mini is running in auto-start mode.

The GSCM-mini shuts down the generator (as described in Sections 1, 2, or 3) whenever the battery voltage exceeds the stop

threshold for 10 minutes. The Start LED blinks (every second) during this 10 minute period. The GSCM-mini will exit the 10 minute

period and shutdown the generator if the battery voltage exceeds the stop point by +1.0V (for a 12V system, 2V for 24V system).

The generator remains off until the battery voltage drops below the start threshold voltage.

The GSCM-mini will shutdown the generator when it has run in auto-start battery charging mode for 6 hours and has not charged

the battery above the shutdown threshold. The GSCM-mini then returns to ready mode looking for a start command. If the battery

voltage drops below the Auto start threshold within 30 minutes of a max Run Time shut down the GSCM-mini will enter a Max run

time fault condition and lock out the start sequence and requires a power down reset. The Gen Hz LED will blink 3 quick blinks

every 5 seconds and the fault LED is on continuously.

If the user wishes to manual-start the generator from a separate pressure switch, level switch, thermostat or inverter start contact,

etc., the battery voltage is fed through the switch (pressure switch etc.) contact to Manual start terminal 5. Closing the contact will

cause the GSCM-mini to start the generator. Some invertors (Outback) provide a switch 12VDC signal to start the generator. This

switched voltage can be connected directly to the manual start terminal 5 and ground terminal 7. (See GSCM-mini wiring diagram

for hook-up).

GSCM-mini WITH A POWER/ RESET SWITCH OR MANUAL/OFF/AUTO SWITCH OPTION

An optional Power/Reset switch may be used to turn the GSCM-mini OFF for generator service or preform a RESET on the GSCM-mini

to clear a fault lockout condition. The switch would be connected between B+ and terminal 2 of the GSCM-mini (See wiring diagram

for details). The Manual start signal is created by connecting terminal 3 (B+ 12VDC) to terminal 5 (man. Start) through a remote start

switch, or it may be generated by an Outback Inverter using the AUX+/- connections on the remote terminal block. The Outback provides

a switched +12VDC signal for the GSCM-mini's manual start input. An optional Manual-Off-Auto switch can be installed to provide user

flexibility for manual starts, Auto starting from Inverter, or turning off an auto start . (see GSCM-mini's wiring diagram, lower right hand

corner)..

GENERATOR EMERGENCY SHUTDOWN WITH THE GSCM-mini

The GSCM-mini Generator Start Stop module is NOT AN EMERGENCY SHUTDOWN DEVICE!! If the manual start signal is removed

the generator will go through a normal shutdown which may take up to 15 seconds to completely shutdown the generator

A RECOMMENDED EMERGENCY SHUTDOWN SOLUTION is to install a separate "Kill" switch and label it as such. The

recommended wiring is shown on page-2 of these instructions and also in Application 1. Disconnecting the power to the GSCM-mini

module will force the relays to open. This will shutdown generators that require a maintained run signal from K1 relay. However this

also prevents the K2 relay from closing to shutdown those generators requiring a momentary stop signal. Using a double pole "Kill"

switch and wiring the second pole in parallel with the K2 relay terminals will force the generator to stop in an emergency situation such

as a fuel spill. (see note 1 on wiring diagram, page 2, for Ignition/crank emergency shutdown option)

ATKINSON ELECTRONICS, INC.

Web Site: www.atkinsonelectronics.com

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GSCM-MINI-50HZ

SECTION - 3

SECTION - 4

SECTION - 5

SECTION - 6

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