Basler Electric DGC-2020 - Manual (Page 270)

Table 6-2. Generator Current Sensing Terminals
Terminal Description
68 (IA–)
A-phase current sensing input
69 (IA+)
71 (IB–)
B-phase current sensing input
72 (IB+)
74 (IC–)
C-phase current sensing input
75 (IC+)
NOTE
Unused current sensing inputs should be shorted to minimize noise pickup.
Generator Voltage Sensing
The DGC-2020 accepts either line-to-line or line-to-neutral generator sensing voltage over the range of 12
to 576 volts, rms line-to-line. Depending on the style number, a DGC-2020 will have a nominal generator
frequency rating of 50/60 hertz or 400 hertz. A style number of x1xxxxxxx indicates 50/60 hertz generator
voltage and a style number of x2xxxxxxx indicates 400-hertz generator voltage. Generator voltage
sensing terminals are listed in Table 6-3.
Table 6-3. Generator Voltage Sensing Terminals
Terminal Description
35 (GEN VN) Neutral generator voltage sensing input
37 (GEN VC) C-phase generator voltage sensing input
39 (GEN VB) B-phase generator voltage sensing input
41 (GEN VA) A-phase generator voltage sensing input
Bus Voltage Sensing
Sensing of bus voltage enables the DGC-2020 to detect failures of the mains (utility). Controllers with
style number xxxxxxxAx use bus voltage sensing to perform automatic synchronization of the generator
with the bus (style number xxxxxxxAx only). The DGC-2020 senses single- or three-phase bus voltage.
Three-phase bus input is available to DGC-2020 hardware version 3 only.
For hardware version 3, sensing voltage is applied to terminals 76 (A-phase), 78 (B-phase), and 80 (C-
phase). For hardware versions 1 and 2, sensing voltage is applied to terminals 45 (A-phase) and 43 (B-
phase). In version 3 hardware, terminal 45 is internally tied to 76 and terminal 43 is internally tied to 78.
This accommodates the use of connectors wired for legacy DGC-2020 versions. Bus voltage sensing
terminals are listed in Table 6-4.
Table 6-4. Bus Voltage Sensing Terminals
Terminal Description
76, 45 (BUS VA) A-phase bus voltage sensing input
78, 43 (BUS VB) B-phase bus voltage sensing input
80 (BUS VC) C-phase bus voltage sensing input
Analog Engine Sender Inputs
Inputs are provided for oil pressure, fuel level, and coolant temperature senders.
Sender input terminals are listed in Table 6-5.
6-4 DGC-2020 Installation 9400200990 Rev X