Winco DGC-2020 - Manual (Page 118)

6-6 DGC-2020 Installation 9400200990 Rev B
Output Contacts
The DGC-2020 has three sets of fixed-function output contacts: Pre, Start, and Run. The Pre contacts
supply battery power to the engine glow plugs, the Start contacts supply power to the start solenoid, and
the Run contacts supply power to the fuel solenoid. Connections to the three sets of contacts are made
directly at each relay using female, 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 each relay. For the location of the Pre, Start, and Run relays refer to Figure 2-2.
Depending on the style number of the DGC-2020, either 4 or 12 sets of programmable output contacts
are provided. Four programmable outputs are provided on DGC-2020 controllers with a style number of
xxAxxxxxx. Twelve programmable outputs are provided on controllers with a style number of xxBxxxxxx.
Programmable output contact terminals are listed in Table 6-8.
Table 6-8. Programmable Output Contact Terminals
Terminal Description
51 (COM 1, 2, 3) Common connection for outputs 1, 2, and 3
52 (OUT 1) Programmable output 1
53 (OUT 2) Programmable output 2
54 (OUT 3) Programmable output 3
55 (COM 4, 5, 6) Common connection for outputs 4, 5, and 6
56 (OUT 4) Programmable output 4
57 (OUT 5) Programmable output 5
58 (OUT 6) Programmable output 6
59 (COM 7, 8, 9) Common connection for outputs 7, 8, and 9
60 (OUT 7) Programmable output 7
61 (OUT 8) Programmable output 8
62 (OUT 9) Programmable output 9
63 (COM 10, 11, 12) Common connection for outputs 10, 11, and 12
64 (OUT 10) Programmable output 10
65 (OUT 11) Programmable output 11
66 (OUT 12) Programmable output 12
USB Interface
A mini-B USB socket enables local communication with a PC running BESTCOMSPlus software. The
DGC-2020 is connected to a PC using a standard USB cable equipped with a type A plug on one end
(PC termination) and a mini-B plug on the other end (DGC-2020 termination).
RS-485 Communication Port
DGC-2020 controllers with the optional RS-485 communication port (style number xxxRxxxxx) are
equipped for polled communication over a Modbus™ network. Twisted-pair, shielded cable is
recommended for RS-485 port connections. RS-485 communication port terminals are listed in Table 6-9.
Table 6-9. RS-485 Communication Port Terminals
Terminal Description
12 (485 SHIELD) Shield connection for RS-485 cable
13 (485B) RS-485 send/receive B connection
14 (485A) RS-485 send/receive A connection