Basler Electric DGC-2020HD - Manual (Page 29)

9469300990 Rev B 19
Operating Power
The DGC-2020HD operating power input accepts a nominal voltage of 12 Vdc or 24 Vdc and tolerates
voltage over the range of 6 to 32 Vdc. Operating power must be of the correct polarity. While reverse
polarity will not cause damage, the DGC-2020HD will not operate. Operating power terminals are listed in
Table 2.
A fuse should be added for additional protection for the wiring to the battery input of the DGC-2020HD. 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-2020HD.
Table 2. Operating Power Terminals
Terminal Description
50 (CHASSIS) Chassis ground connections
49 (BATT–) Negative side of operating power input
48 (BATT+) Positive side of operating power input
Generator Current Sensing
The DGC-2020HD has sensing inputs for A-phase, B-phase, and C-phase generator current. A DGC-
2020HD with a style number of 1xxxxxxxxx has 1 Aac nominal current sensing and a DGC-2020HD with a
style number of 5xxxxxxxx indicates 5 Aac nominal current sensing. Generator current sensing terminals
are listed in Table 3.
Table 3. Generator Current Sensing Terminals
Terminals Description
1 (IA+)
A-phase current sensing input
2 (IA–)
3 (IB+)
B-phase current sensing input
4 (IB–)
5 (IC+)
C-phase current sensing input
6 (IC–)
Programmable Current Sensing
Four user-programmable current sensing inputs are provided for measuring mains current, load bus
current, ground current, or a combination of these. Table 4 lists the programmable current sensing
terminals.
Table 4. Programmable Current Sensing Terminals
Terminal Description
7 (AUX I1 +)
Programmable current sensing input 1
8 (AUX I1 –)
9 (AUX I2 +)
Programmable current sensing input 2
10 (AUX I2 –)
11 (AUX I3 +)
Programmable current sensing input 3
12 (AUX I3 –)
13 (AUX I4 +)
Programmable current sensing input 4
14 (AUX I4 –)
DGC-2020HD Terminals and Connectors