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

GSCM-mini MAINTAINED STARTING SEQUENCE continued

When a run condition is detected, the GSCM-mini turns ON the Run LED and open collector transistor output (remote run

lamp) and after a 60 second generator stabilization period begins monitoring the AC Hz signal for over/under Hz condition.

If the generator starts but shuts down after the 60 seconds stabilization period, due to a fuel problem, etc. the GSCM-mini

blinks the Gen Hz LED for an Under Hz condition , after 60 seconds the Run LED turns Off, Fault LED truns On, and K2 relay

energizes for 5 seconds. The GSCM-mini enters a Fault shutdown lockout condition. A power down reset is required to clear

the lockout condition.

The generator continues running until one of the following occurs: the manual start signal is no longer received, the auto

battery charge voltage has been reached while running in Auto Charge Mode, an Over or Under Hz condition occurs (If Gen.

Hz. Shutdown is enabled) or the generator runs out of gas. (No run time limit)

Shutdown Routine, K1 de-energizes, then ½ second later K2 relay energizes , remains closed until the AC Hz signal from

the generator goes to zero for 5 seconds ensuring generator shutdown.

The generator remains off until another start signal is received.

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

The CONFIGURATION terminal 6 has been connected to B+ (terminal 3), configuring the GSCM-mini for ignition/crank start

sequence. The GSCM-mini is then powered by connecting B+ (+12 VDC) to terminal 2. After 5 seconds the GSCM-mini indicates

that it is ready to receive a start signal by blinking the start LED once every 5 seconds. The starting sequence is as follows.

The start LED blinks once every 5 seconds to indicate that the GSCM-mini is in a "Ready" mode. When a manual signal is

received, the start LED lights continuously. After a 2 second delay, K2 relay energizes and remains energized until the start

signal is either removed or the generator fails to start after 3 attempts. K1 relay closes to crank the starter. The K1 relay

remains closed until either the generator starts or the maximum cranking time period (20 seconds) is reached.

If the generator fails to start after the 20 seconds cranking period, K1 relay opens for a resting period of 40 seconds. The

K1 relay then closes again cranking the starter until the maximum cranking time is reached or the generator starts.

If the generator fails to start after 3 cranking attempts with the associated resting periods then K2 relay de-energizes and

the GSCM-mini enters its Shutdown Routine, then the Gen Hz LED does a double blink, the Fault LED turns ON and the

GSCM-mini enters the Max. Crank lockout condition. This lockout condition remains until the GSCM-mini is reset by removing

power from terminal 2 (see GSCM-mini wiring diagram) and reconnecting power. The GSCM-mini will then clear the lockout

condition, and enter "Ready" mode with the Start LED blinking Every 5 seconds.

When the generator starts, K1 relay immediately opens, stopping the cranking. A valid run condition is determined by the

generator AC output frequency exceeding the crank disconnect setting of 45Hz.

If the generator starts but shuts down after a few seconds due to a fuel problem, etc. the start sequence will revert to the

"Ready" mode after a 60 second delay. During this delay the start LED will blink rapidly. The GSCM-mini will then try to start

the generator again in manual mode or after a 10 minute delay period in auto-start mode.

When a run condition is detected, the GSCM-mini turns ON the Run LED and open collector transistor output (remote run

lamp) and after a 60 second generator stabilization period begins monitoring the AC Hz signal for over/under Hz condition.

If the generator starts but shuts down after the 60 seconds stabilization period, due to a fuel problem, etc. the GSCM-mini

blinks the Gen Hz LED for an Under Hz condition , after 60 seconds the Run LED turns Off, Fault LED turns On, and K2 relay

energizes for 5 seconds. The GSCM enters a Fault shutdown lockout condition. A power down reset is required to clear the

lockout condition.

The generator continues running until one of the following occurs: the manual start signal is no longer received, the auto

battery charge voltage has been reached while running in Auto Charge Mode, an Over or Under Hz condition occurs (If Gen.

Hz. Shutdown is enabled) or the generator runs out of gas. (No run time limit)

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.

GSCM-mini WITH A MANUAL/OFF/AUTO SWITCH OPTIONS

The Manual start signal is created by connecting terminal 5 (man. Start) to terminal 3 (B+12VDC) through a Power/Reset Switch

(see GSCM-mini wiring diagram). It may also 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, resets, turning the unit off, or Auto starting from Inverter.

(see GSCM-mini's wiring diagram, lower right hand corner).

ATKINSON ELECTRONICS, INC.

Web Site: www.atkinsonelectronics.com

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GSCM-MINI

SECTION - 2

SECTION - 3

SECTION - 4

REV 9/05