Atkinson Electronics GSCM Bedienings- en installatie-instructies - Pagina 5
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GENERATOR START CONTROL MODULE
GSCM SHUTDOWN CONDITIONS
The GSCM detects several fault conditions (detection not enabled until the generator has been running for 15 seconds) and will
immediately shutdown the generator, locking it out until a reset signal is received (shorting pins 7 and 8 momentarily). The open
collector transistor terminal 18 will energize a user supplied DC relay (not exceeding 180 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:
1.
Failure to start with 4 cranking attempts (see Section-1:4-5). The max crank/max runtime fault LED flashes rapidly.
2.
Low oil pressure condition is detected 15 seconds after "run" condition is verified. Terminal 9 is connected to ground by the
low oil pressure sensor. The emergency shutdown fault LED flashes slowly.
3.
High temperature condition is detected 15 seconds after K5 (load transfer) relay is energized. Terminal 10 is connected to
ground by temperature sensor. The emergency shutdown LED flashes rapidly.
4.
High frequency (over speed) condition. The generator AC frequency is monitored on terminals 13 and 14. If the frequency
exceeds the 15 to 75 Hz adjustment for 10 seconds after K5 (load transfer) relay is energized, the generator shuts down and
the frequency shutdown fault LED blinks rapidly. The "over Hz" LED blinks during this 10 second period.
5.
Low frequency (under speed) condition. If the generator AC frequency remains below the 15 to 75 Hz adjustment for 10
seconds after K5 (load transfer) relay is energized, the generator shuts down and the frequency shutdown fault LED blinks
slowly. The "under Hz" LED blinks during this 10 second period.
6.
Maximum runtime of 12 hours is exceeded (see Section-3:4). The max crank/max runtime fault LED blinks slowly.
AUTOMATIC STARTING FOR BATTERY CHARGING OR FROM PRESSURE SWITCH, ETC.
The GSCM monitors a battery voltage of 0 to 60V DC on battery voltage sense terminal 4. This mode is disabled if the voltage
on terminal 4 is less than 6V, (no connection) or either the cut-in or cut-out voltage adjustment has been set to 0V.
1.
The GSCM starts with closing K1 (glow plug) relay whenever the battery sense voltage is less than the cut-in adjustment for
5 continuous minutes. The "cut-in" LED blinks during this 5 minute period. If the battery voltage rises above the cut-in
adjustment 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 is starting
or running the generator in auto-start battery charging mode.
2.
The GSCM shuts down the generator (as described in Section-1:11-14) whenever the battery voltage exceeds the cut-out
adjustment for 10 minutes. The "cut-out" LED blinks during this 10 minute period. The GSCM will exit the 10 minute period
and shutdown the generator if the battery voltage exceeds the cut-out point by +1.0V (for a 12V system, higher voltages are
proportional). The generator remains off until started again by the battery voltage dropping to the cut-in point.
3.
If the user wishes to disable the 5 minute on and 10 minute off timers for a battery charging application see Section-4:6-7.
4.
If the generator has been running for 12 continuous hours in battery charge mode without the battery sense voltage (terminal
4) reaching the cut-out point, the GSCM will shutdown the generator and indicate a maximum runtime fault (see Section-2:6).
This runtime limit is only active in the auto-start mode.
5.
The GSCM will switch back from the max runtime fault if the reset terminals 7 and 8 are momentarily connected, terminals
5 and 6 are connected for a manual start signal or a period of 12 hours passes from a max runtime shutdown condition.
6.
The user can force the GSCM to remain locked out beyond the 12 hour shutdown period by interrupting the battery voltage
sense signal on terminal 4 with normally closed contacts of a DC relay connected to fault terminal 18. This relay will energize
during any fault condition. See the wiring diagram on Page 2.
7.
Connecting the 12 hour shutdown terminals 15 and 16 together with a jumper wire allows the generator to continue running
indefinitely in "auto-start" mode if the battery voltage cut-out point is not reached. If the user wishes to only override the
current cycle such as needing more than 12 hours to initially charge a large battery bank, then momentarily connecting the
12 hour shutdown terminals 15 and 16 while the generator is running will allow it to exceed the 12 hour limit on its current
cycle, but will reinstate the 12 hour limit for all charge cycles thereafter.
8.
There is no maximum runtime shutdown after 12 hours if the generator is started manually by the GSCM terminals 5 and 6
being connected together.
9.
If the user wishes to auto-start the generator from a separate pressure switch, level switch, thermostat or inverter start
contact, etc., adjusting the voltage cut-in and cut-out points fully clockwise (5V @ TP while in the adjustment mode), and then
feeding the battery voltage through this contact to voltage sense terminal 4 will cause the GSCM to start the generator in
"auto" mode and it will continue to run until either the input voltage signal is disconnected by the contact opening or the 12
hour maximum runtime limit is exceeded as described in paragraphs 4-7 in this section. Any DC voltage greater than 6V DC
may be used for this mode with the cut-in and cut-out settings at maximum. The 12 hour maximum runtime limit is active
in this mode. "Switched" input applications automatically disable the 5 minute 'on' and 10 minute 'off' delays.
ATKINSON ELECTRONICS, INC.
Web Site: www.atkinsonelectronics.com
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SECTION - 2
SECTION - 3
REV 8/06