Atkinson Electronics GSCM-MINI Manuale - Pagina 6

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

GSCM-mini FAULT SHUTDOWN CONDITIONS

The GSCM-mini detects three (3) fault shutdown conditions (over/under Hz. detection not enabled until the generator has been

running for 60 seconds) and will shutdown the generator after 10 continuous seconds of Hz. fault condition, locking it out until a

power down reset and power back up. The Fault open collector transistor output (terminal 12) will energize a user supplied

remote lamp or DC relay (not exceeding 300 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:

Failure to start with 3 cranking attempts (see Section-1:3, 2:2, & 3:3 ). The Gen. Hz Shutdown LED does a double blink and

Fault LED On continuously.

High frequency (over Hz.) condition. The generator AC frequency is monitored on terminals 9 and 10. If the Gen. Hz. enable

terminal #8 is grounded and the generator output frequency exceeds the 65 Hz fixed threshold for 10 seconds, the generator

shuts down and the Generator Hz shutdown LED blinks rapidly. The "Generator Hz" LED blinks during this 10 second period.

Low frequency (under Hz.) condition. If the Gen. Hz. enable terminal #8 is grounded and the generator output frequency

remains below the 55 Hz fixed threshold for 10 seconds, the generator shuts down and the Generator Hz shutdown fault LED

blinks slowly. The "Generator Hz" LED blinks during this 10 second period.

AUTOMATIC STARTING FOR BATTERY CHARGING

The GSCM-mini 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). 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 (three fast blinks with 2 second off time). When the battery sense 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 battery charging mode.

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

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 (three fast blinks with 2 second off time) 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, voltages are proportional). The generator remains off until the battery voltage drops

below the start threshold voltage.

There is no maximum runtime shutdown in either manual or auto start.

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 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).

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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SECTION - 7

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