Winco DGC-500 - Manual (Page 45)

DGC-500 Functional Description 3-25
System Configuration
C RUN, OFF and AUTO are selectable through the front panel HMI and OFF and AUTO are selectable
through BESTCOMS. However, for clarity, the term AUTO will not be used in this section. Auto-Run and
Auto-Off will be used instead. Auto-Run means the unit is in Auto while the automatic transfer switch
(ATS) is closed, or the user started the engine remotely through BESTCOMS. Auto-Off means the unit
is in Auto while the ATS is open, or the user stopped the engine remotely through BESTCOMS. The
system configuration settings for the DGC-500 are Run, Off, Auto-Run and Auto-Off.
C If BESTCOMS remotely started the engine before a reset occurred or the system configuration goes to
Off, then the Remote Start setting in BESTCOMS is set to Stop.
C
If ECU support is enabled when the engine is running and the system configuration goes to Off, then the
unit will go to the Shut Down state. Otherwise, it will transition to the Ready state and pulse the ECU.
C
If ECU support is disabled and system configuration goes to Off, then the unit will always transition to the
Ready state.
Operating States
The DGC-500 supports 11 operating states. Each operating state is illustrated by a flowchart later in this
section.
C
Restart/Power-Up. The initial state.
C Ready. The DGC-500 is in the Off or Auto-Off mode.
C
Pulsing. ECU Only—pulses (momentarily powers up) the ECU for updated information.
C
Connecting. ECU Only—the system configuration just changed to Run or Auto-Run.
C Pre-Start. Closes the pre-start relay or pauses the DGC-500 while it is not safe to crank.
C
Cranking. Cranks the engine until it is above the crank disconnect speed.
C
Resting. Occurs between crank cycles and does not crank the engine.
C
Running. The unit is now running and no longer cranking.
C Cooling. Cool down running engine if a load is or was applied when going to Auto-Off mode.
C
Shutting Down. ECU Only—wait for engine to stop rotating before "pulsing".
C
Alarm. Alarm was triggered, wait for the alarm to clear.
State Transitions
Criteria used for deciding state transitions are based on the following input events.
C
System Configuration (Run, Off, in Auto with ATS closed, in Auto with ATS open)
C
Analog/ECU sender data (example: Engine Speed)
C Programmable auxiliary inputs
C
Switch data (Coolant Level Switch, ATS, Emergency Stop Button)
C
ECU-specific data (example clearing/requesting diagnostics)
C Various programmable timers (run-time, cycles, delays, time-out length)
C Programmable I/O settings
C
Alarm settings (thresholds, enabling and timers)
C
Other settings selectable through BESTCOMS.
Input events are used in deciding the following output events.
C
Output relays on the DGC-500 control the generator and other devices connected to the DGC-500.
C
LED output is controlled by the system configuration setting, active alarm/pre-alarms, and by the
supplying load criteria.
C
The LCD is controlled by the value of data being displayed, the state of the DGC-500, and by the viewing
mode (Normal, Alternate Display, ECU Parameters, or Menu).
C The horn (or buzzer) is controlled by the Alarm Silence, Run, or Off pushbuttons, and by the Alarm and
Pre-Alarm conditions.
Normal Program Control
If an engine does not have an ECU, then ECU Support should be disabled so that the DGC-500 uses analog
sender data. An engine with ECU support disabled or ECU support enabled with a constant power supply and
accessible fuel solenoid will follow the normal program control flowchart of Figure 3-15.