Basler Electric DGC-2020ES - Manual (Page 98)

90 9469200990 Rev C
Table 8. Rear Panel Terminal and Connector Descriptions
Locator Description
A The majority of external, DGC-2020ES wiring is terminated at 8- or 15-position
connectors with spring clamp terminals. These connectors plug into headers on the
DGC-2020ES. The connectors and headers have a dovetailed edge that ensures
proper connector orientation. Each connector and header is uniquely keyed to ensure
that a connector mates only with the correct header. Spring clamp terminals accept a
maximum wire size of 12 AWG.
B The mini-B USB socket mates with a standard USB cable and is used with a PC
running BESTCOMSPlus
® software for local communication with the DGC-2020ES.
Connections
DGC-2020ES connections are dependent on the application. Incorrect wiring may result in damage to the
controller.
Note
Be sure that the DGC-2020ES is hard-wired to earth ground with no
smaller than 12 AWG copper wire attached to the chassis ground
terminal (terminal 1) 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-2020ES will
not operate.
For the DGC-2020ES to correctly meter power factor, the generator
must be rotating clockwise (A-B-C).
The DGC-2020ES terminals are grouped by function and include operating power, generator current
sensing, generator voltage sensing, bus voltage sensing, analog engine sender inputs, magnetic pickup
input, contact sensing inputs, output contacts, USB interface, CAN interface, and Remote Display Panel
connections.
DGC-2020ES terminal groups are described in the following paragraphs.
Operating Power
The DGC-2020ES operating power input accepts either 12 Vdc or 24 Vdc and tolerates voltage over the
range of 6 to 32 Vdc. Operating power must be of the correct polarity. Although reverse polarity will not
cause damage, the DGC-2020ES will not operate. Operating power terminals are listed in Table 9.
It is recommended that a fuse be added for additional protection for the wiring to the battery input of the
DGC-2020ES. A fuse helps prevent wire damage and nuisance trips due to initial power supply inrush
current. To follow UL guidelines, a 5 A maximum, 32 Vdc supplementary fuse must be implemented in the
battery input circuit to the DGC-2020ES
Table 9. Operating Power Terminals
Terminal Description
16 (CHASSIS) Chassis ground connection
17 (BATT–) Negative side of operating power input
18 (BATT+) Positive side of operating power input
Terminals and Connectors DGC-2020ES