Specs
GENERATOR START CONTROL MODULE - MINI (2 Wire to 3 Wire) GSCM-MINI-D
ATKINSON ELECTRONICS, INC. REV 07/08
Web Site: www.atkinsonelectronics.com Distributed by:
GSCM-mini-D MAINTAINED STARTING SEQUENCE continued SECTION - 2
4. If the generator starts but shuts down after a few seconds due to a fuel problem, etc. The GSCM-mini-D goes thru it’s Shutdown
Routine then re-enters “Ready” mode after a 60 second delay. During this delay the start LED will blink rapidly. The GSCM-mini-D
will then try to start the generator again in manual mode or after a 5 minute delay period in auto-start mode.
5. When a run condition is detected, the GSCM-mini-D 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.
6. If the generator starts but shuts down after the 60 seconds stabilization period, due to a fuel problem, low oil pressure, broken AC
Hz or 12v run status wire, the GSCM-mini-D blinks the Gen Hz LED for an Under Hz condition , after 60 seconds the Run LED turns
Off, K2 relay energizes for 5 seconds, and Fault LED turns On and the Gen Hz LED blinks four times every two seconds. The
GSCM-mini-D enters a Fault shutdown lockout condition and must be powered down to reset the fault lockout.
7. If no Faults occur, the generator continues running until one of the following occurs: the manual start signal is no longer received,
the auto battery charge voltage or Max Run time 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.
8. 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.
9. The generator remains off until another start signal is received.
GSCM-mini-D IGNITION/CRANK STARTING SEQUENCE (Relay Option #3) SECTION - 3
The CONFIGURATION terminal 6 has been connected to B+ (terminal 3), configuring the GSCM-mini-D for ignition/crank start
sequence. The GSCM-mini-D is then powered by connecting B+ (+12 VDC) to terminal 2. The Start LED turns on for 5 seconds while
the GSCM-mini-D initializes with option #3 ignition/crank starting sequence then begins blinking the start LED once every 5 seconds
. The generator starting sequence is as follows.
1. The start LED blinks once every 5 seconds to indicate that the GSCM-mini-d 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.
2. 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.
3. If the generator fails to start after 3 cranking attempts with the associated resting periods then K2 relay de-energizes and enters
its shutdown routine, then the Gen Hz LED does a double blink, the Fault LED turns ON and the GSCM-mini-D enters the Max.
Crank lockout condition. This lockout condition remains until the GSCM-mini-D is reset by removing power from terminal 2 (see
GSCM-mini-D wiring diagram) and reconnecting power. The GSCM-mini-D will then clear the lockout condition, and enter “Ready”
mode with the Start LED blinking Every 5 seconds.
4. 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.
5. 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-D will then try to start the
generator again in manual mode or after a 10 minute delay period in auto-start mode.
6. When a run condition is detected, the GSCM-mini-D 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.
7. If the generator starts but shuts down after the 60 seconds stabilization period, due to a fuel problem, low oil pressure, broken AC
Hz or 12v run status wire, the GSCM-mini-D blinks the Gen Hz LED for an Under Hz condition , after 60 seconds the Run LED turns
Off, K2 relay energizes for 5 seconds, and Fault LED turns On and the Gen Hz LED blinks four times every two seconds. The
GSCM-mini-D enters a Fault shutdown lockout condition and must be powered down to reset the fault lockout.
8. The generator continues running until one of the following occurs: the manual start signal is no longer received, the auto battery
charge voltage or Max Run time 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.
9. When the manual start signal is removed, K2 relay de-energizes opening the ignition circuit shutting down the generator. The
GSCM-mini-D 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-d’s Gen. 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-D returns to “Ready’ mode.