Winco DGC-2020 - Manual (Page 14)

1-2 DGC-2020 General Information 9400200990 Rev K
Contact Inputs and Output Contacts
DGC-2020 controllers have one, dedicated emergency stop contact input and 16 programmable contact
inputs. All contact inputs recognize dry contacts. The programmable inputs can be configured to initiate a
pre-alarm or alarm. A programmable input can be programmed to receive an input from an automatic
transfer switch or override DGC-2020 alarms and protection functions. Each programmable input can be
assigned a user-defined name for easy identification at the front panel display and in fault records.
Output contacts include three dedicated relays for energizing an engine’s glow plugs, fuel solenoid, and
starter solenoid. An additional four user-programmable output contacts are provided if the style number is
xxAxxxxxx. If the style number is xxBxxxxxx, an additional twelve output contacts are provided.
Additional contact inputs and output contacts can be accommodated with an optional CEM-2020 (Contact
Expansion Module). Contact Basler Electric for ordering information.
Automatic Transfer Switch Control (Mains Failure)
The DGC-2020 has the ability to detect a mains failure via a single-phase Bus input. A mains failure is
established when any one of the following conditions are met:
 Bus voltage falls below dead bus threshold
 Bus voltage unstable due to overvoltage or undervoltage
 Bus voltage unstable due to overfrequency or underfrequency
At this time, the DGC-2020 will start the genset and when ready, apply power to the load via the genset.
The DGC-2020 implements open transitions to and from the mains. When the mains returns and is
considered stable, the DGC-2020 will transfer the load back to the mains.
Communication
Standard DGC-2020 communication features include a standard USB port and SAE J1939 interface.
Optional communication features include a dial-out modem and RS-485 communication port.
BESTCOMSPlus can communicate with the DGC-2020 through Ethernet via an optional LSM-2020 (Load
Share Module). Contact Basler Electric for ordering information.
USB Port
A USB communication port can be used with BESTCOMSPlus software to quickly configure a DGC-2020
with the desired settings or retrieve metering values and event log records.
CANbus Interface
A CANbus interface provides high-speed communication between the DGC-2020 and the engine control
unit (ECU) on an electronically controlled engine. This interface provides access to oil pressure, coolant
temperature, and engine speed data by reading these parameters directly from the ECU. When available,
engine diagnostic data can also be accessed. The CANbus interface supports the following protocols:

SAE J1939 Protocol - Oil pressure, coolant temperature, and engine speed data are received from
the ECU. In addition, DTCs (Diagnostic Trouble Codes) help diagnose any engine or related failures.
The engine DTCs are displayed on the front panel of the DGC-2020 and may be obtained using
BESTCOMSPlus software.

MTU Protocol - A DGC-2020 connected to a genset equipped with an MTU engine ECU receives Oil
pressure, coolant temperature, and engine speed data from the engine controller, along with various
alarms and pre-alarms that are MTU specific. In addition, the DGC-2020 tracks and displays the
active fault codes issued by the MTU engine ECU.
Dial-Out Modem
The optional dial-out modem enables remote control, monitoring, and setting of the DGC-2020. When an
alarm or pre-alarm condition occurs, the DGC-2020 can dial up to four telephone numbers, in sequence,
until an answer is received and the condition is annunciated.
RS-485 Port
An optional RS-485 communication port uses the Modbus communication protocol and enables remote
control and monitoring of the DGC-2020 over a polled network.