9469300994 2-3
DGC-2020HD Terminals and Connectors
Control power
The DGC-2020HD control power input accepts a nominal voltage of 12 Vdc or 24 Vdc and tolerates
voltage over the range of 6 to 32 Vdc. Control power must be of the correct polarity. While reverse
polarity will not cause damage, the DGC-2020HD will not operate. Control power terminals are listed in
Table 2-2.
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 2-2. Control Power Terminals
Chassis ground connections
Negative side of control power input
Positive side of control 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 2-3.
Table 2-3. Generator Current Sensing Terminals
A-phase current sensing input
B-phase current sensing input
C-phase current sensing input
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 2-4 lists the programmable current sensing
terminals.
Table 2-4. Programmable Current Sensing Terminals
Programmable current sensing input 1
Programmable current sensing input 2
Programmable current sensing input 3
Programmable current sensing input 4
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