Winco DGC-2020 - Manual (Page 92)

4-22 DGC-2020 BESTCOMSPlus Software 9400200990 Rev K
immediately. Furthermore, if an Off Mode Cooldown is in progress and the OFF button is pressed, the unit
will immediately shut down. If the unit was in RUN mode when the OFF button was pressed, it remains in
RUN for the remainder of the cooldown cycle. If the machine was in the AUTO mode when the OFF
button was pressed, it remains in AUTO mode until the cooldown and shutdown cycle are completed, or
until the OFF button is pressed a second time forcing the unit to OFF mode. The OFF LED will flash to
indicate an off mode cooldown is in progress. In addition, the unit will display “OFF MODE COOLDN”
while the cooldown timer is displayed.
If the RUN button is pressed while an Off Mode Cooldown is in progress, the cooldown will be aborted
and the unit will go to RUN mode.
If the AUTO button is pressed while an Off Mode Cooldown is in progress, the Off Mode Cooldown is
cleared and the unit returns to normal AUTO operation. Thus, if conditions exist where the unit would
normally run in AUTO, it will resume running in AUTO. If conditions exist where the unit would normally
shut down in AUTO, the unit will finish the remaining cooldown cycle then stop and remain in AUTO.
If Off Mode Cooldown is not enabled, pressing the OFF button once at any time will immediately force the
unit to OFF mode.
The Off Mode Cooldown feature works from the front panel HMI buttons only. Any OFF command
received through BESTlogic+ or BESTCOMSPlus control result in an immediate transition of the machine
to OFF.
If the NFPA level setting is set for 1 or 2, the Off Mode Cooldown enable setting is cleared and OFF mode
cooldown is not allowed.
After a genset’s load is removed, the DGC-2020 can ensure proper engine and turbocharger cooldown by
maintaining engine operation for a user-specified duration. The cooldown time delay is initiated for any
one of the following conditions:
 Genset load is removed and engine shutdown is permitted
 Auto transfer switch (ATS) opens while operating in Auto mode
 Remote shutdown is initiated
EPS Threshold
Indication that the emergency power system is supplying load is determined by a user-adjustable
threshold setting
K expressed as a percentage of the genset CT (nominal) primary rating.
The Low Line Scale Factor setting L is used to automatically adjust the EPS threshold settings in
applications that may utilize more than one type of genset connections. The scale factor setting is
implemented when the DGC-2020 senses a contact closure at a contact input programmed to activate
scaling of the settings. The value of the scale factor setting serves as a multiplier for the threshold
settings. For example, if a scale factor contact input is received bye the DGC-2020 and the scale factor
setting is 2.000, the threshold setting will be doubled (2.000 x PU).
Measurement/Metering Units
The user can configure the DGC-2020 to display and report engine oil pressure and coolant temperature
in English or metric units of measure
M .
Battery Voltage
The nominal voltage
N of the starter battery is used by the DGC-2020 to detect and annunciate battery
overvoltage and low or weak battery voltage.
NFPA Compliance Level
The DGC-2020 can be used in an application requiring compliance with NFPA Standard 110. Levels 1
and 2 of Standard 110 are supported
O . Selecting level 1 or 2 affects DGC-2020 operation in the following
ways:
 The number of crank cycles is fixed at 3
 Crank cycle time is fixed at 15 seconds
 Continuous crank time is fixed at 45 seconds
 The low coolant temperature pre-alarm setting is fixed at 70F
Horn
An output contact configured (through programmable logic) to energize a horn
P can be enabled and
disabled through BESTCOMSPlus or at the DGC-2020 front panel.