Atkinson Electronics GSCM-MINI Manuale - Pagina 10

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GSCM-mini-d

The GSCM-mini-d 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-d monitors a battery voltage range of 0 to 60VDC and automatically determines the start and

stop set point based on battery voltage (12, 24, or 48VDC). Below 16VDC uses 12V thresholds, between 16 to 32V -uses 24V

thresholds, above 32V - uses 48V thresholds. This mode is disabled if the voltage on terminal 4 is less than 6V, (no

connection).

1. 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 5 minute timing cycle starts over. (Temporary battery voltage fluctuations such as instantaneous

inverter loads will not start the GSCM). The start LED blinks every 3 seconds while the GSCM-mini is running the

generator in auto-start mode.

2. The GSCM-mini starts the generator as described on page 3-1: momentary start, 2: maintained start, or 3: ignition

start.

3. The GSCM-mini shuts down the generator (as described in relay options 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

threshold by +1.0V for a 12V system, 2V for 24V system and 4V for a 48V system. The generator remains off until the

battery voltage drops below the start threshold voltage.

4. The GSCM-mini will shut down the generator when it has run in auto-start battery charging mode for 6 hours and has

not charge 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 generator Hz LED will blink 3 quick blinks every 5 seconds and the fault LED is on continuously.

5. 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 inverters 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.

GSCM-mini-d

The GSCM-mini-d 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 shut down 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-4 of these instructions and also in Option 1. Disconnecting the power to the GSCM-

mini module will force the relays to open. This will shut down generators that require a maintained run signal from K1 relay.

However this also prevents the K2 relay from closing to shut down 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 4, for Ignition/ crank emergency shutdown

option).

www.atkinsonelectronics.com

800.261.3602

Automatic Starting for Battery Charging

Generator Emergency Shutdown

Circuit Board Division

Revised 11/2020