Winco DGC-500 - Manual (Page 77)

DGC-500 Installation 5-3
NOTE
Be sure that the DGC-500 is hard-wired to earth ground with no smaller than 12
AWG copper wire attached to the chassis ground terminal (P22) on the rear of the
controller.
Operating power from the battery must be of the correct polarity. Although reverse
polarity will not cause damage, the DGC-500 will not operate.
CONNECTIONS
DGC-500 connections are dependent on the application. Incorrect wiring may result in damage to the
controller.
DGC-500 Terminations
All DGC-500 terminals are located on the rear panel of the controller. There are three types of interface
terminals.
J1, a DB9 connector, is used as a temporary communication interface with IBM compatible PCs.
J2, a five-terminal header, is an SAE J1939 interface used for high-speed communication with a CAN-enabled
engine control unit (ECU). J2 is enabled only on DGC-500 controllers with style numbers of F1J or F5J.
All other connections consist of quarter-inch, quick-connect terminals. Amp part numbers 154718-3 (positive-
lock receptacle) and 154719-1 (nylon housing) are the recommended components for making connections
at the quick-connect terminals. Wires performing common functions, such as voltage sensing leads, should
be grouped together.
All connections (except chassis ground and communication) should be made with wire no smaller than 14
AWG.
Serial Communication Port
The RS-232 port on the rear panel uses a DB9 female connector. Figure 5-3 illustrates the pin assignments
of the communication port and Table 5-1 identifies the RS-232 connector pin functions. A standard
communication cable terminated with a DB9 male connector is used for PC interface with the DGC-500 as
shown in Figure 5-4.
Figure 5-3. DGC-500 Communication Port Pin Assignments
Table 5-1. DGC-500 Communication Port Pin Functions
Pin Function Name Direction
1 N/C — N/A
2 Transmit Data TXD From DGC-500
3 Receive Data RXD To DGC-500
4 N/C — N/A
5 Signal Ground GND N/A
6, 7, 8, 9 N/C — N/A