Winco DGC-2020 - Manual (Page 57)

9400200990 Rev K DGC-2020 Functional Description 3-9
input is open (emergency stop condition), the Pre-Start, Crank, and Fuel outputs open. When the
Emergency Stop input is closed, all output contacts operate normally.
DGC-2020 output contacts include Pre-Start, Crank, Fuel, and up to 12 standard programmable outputs.
Additional output contacts can be accommodated with a CEM-2020 (Contact Expansion Module).
Pre-Start
This output closes to energize the engine glow plugs. The Pre-Start output can be programmed to close
up to 30 seconds prior to engine cranking. The Pre-Start output can also be programmed to open upon
engine startup or remain closed as long as the engine is operating.
During the resting state, the Pre-Start can be set to Off, On, or Preheat Before Crank. If Preheat Before
Crank is selected, the Pre-Start output will be closed for a time equal to the Pre-crank delay time prior to
re-entering the cranking state. If the Pre-crank delay setting is longer than the rest interval, the Pre-Start
output will be closed for the entire rest time.
Pre-Start output connections are made through terminals located on the Pre-Start relay.
Crank
This output closes when engine cranking is initiated by the DGC-2020 and opens when the magnetic
pickup (MPU) or generator frequency indicates that the engine has started. Prior to engine starting, the
duration of cranking is determined by the cranking style (cycle or continuous) selected. Cycle cranking
permits up to 7 crank cycles with crank cycle duration of 5 to 15 seconds. The continuous crank time is
adjustable from 1 to 60 seconds.
Crank output connections are made through terminals located on the Crank relay.
Fuel
This output closes when engine cranking is initiated by the DGC-2020. The Fuel output remains closed
until an off command or emergency stop command is received.
Fuel output connections are made through terminals located on the Fuel relay.
Programmable
DGC-2020 controllers with a style number of xxAxxxxxx have four programmable output contacts (OUT 1
through 4). Twelve programmable outputs (OUT 1 through 12) are provided on controllers with a style
number of xxBxxxxxx.
MODES OF OPERATION
OFF
When in the OFF mode, the DGC-2020 will not start under any circumstance. It cannot be started
automatically. Programmable logic functions normally in this mode.
RUN
When in the RUN (manual) mode, the DGC-2020 runs and cannot be shut off automatically. The breaker
can be open or closed through programmable logic inputs. Programmable logic functions normally in this
mode.
AUTO
When in the AUTO mode, the DGC-2020 may be started automatically or “self-start” from an automatic
starting feature listed in the following paragraphs. If the DGC-2020 is not in AUTO mode, the self-starting
modes will have no effect. The self-starting modes are independent, with one exception, meaning that if
any self-starting mode indicates that the unit should run, it will run. It will not shut down unless all self-
starting modes indicate that the unit should not be running.
ATS Contact Input
The ATS programmable function has an input mapped to it from BESTCOMSPlus. The unit will start and
run when this contact is closed, and will stop when the contact is open. This mode is independent of the
other self-starting modes.