Basler Electric DGC-2020 - Manual (Page 27)

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.
CAN Bus Interface
A CAN bus 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 CAN bus interface also provides communication between the DGC-2020 and the Marathon
DVR2000E+ voltage regulator. Voltage setpoint and underfrequency knee-point settings can be sent
directly to the DVR2000E+ from the DGC-2020.
The CAN bus 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.
External Dial-Out Modem Port
An optional RS-232 communication port uses the ASCII protocol to communicate with a user-supplied
external modem. The optional external 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.
AEM-2020 (Analog Expansion Module)
The optional AEM-2020 provides eight remote analog inputs, eight remote RTD inputs, two remote
thermocouple inputs, and four remote analog outputs to the DGC-2020. The AEM-2020 communicates
with the DGC-2020 through a CAN bus interface. Refer to Section 11, AEM-2020 (Analog Expansion
Module), for more information.
CEM-2020 (Contact Expansion Module)
The optional CEM-2020 provides 10 additional contact inputs and 18 or 24 additional output contacts
(depending on module type) to the DGC-2020. The CEM-2020 communicates with the DGC-2020 through
a CAN bus interface. Refer to Section 10, CEM-2020 (Contact Expansion Module), for more information.
LSM-2020 (Load Share Module)
The optional LSM-2020 in conjunction with the DGC-2020 provides load sharing between governors
through an analog load share line. The LSM-2020 communicates through an Ethernet port and provides
access to the DGC-2020 via Ethernet. Refer to Section 9, LSM-2020 (Load Share Module), for more
information.
Style Number
Standard-order DGC-2020 controllers are identified by a style number which consists of a combination of
letters and numbers that define the controller’s electrical characteristics and operational features. The
9400200990 Rev X DGC-2020 General Information 1-3