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Typical Applications DGC-2020HD
Figure 3-28. DGC-2020HD Expansion Module CAN Connections
Installation for CE Systems
For CE compliant systems, it may be required to route ac voltage and current sensing wires separately
from other wires.
Installation in an Ungrounded System Application
When the DGC-2020HD is controlling equipment that is part of an ungrounded system, it is
recommended that potential transformers be employed on the voltage sensing inputs to provide full
isolation between the DGC-2020HD and monitored voltage phases.
P0071-52
DGC-2020HD
53) SHIELD
52) CAN 1 H
51) CAN 1 L
AEM-2020 (2)
GND
CANH
CANL
CEM-2020 (1)
GND
CANH
CANL
CEM-2020 (2)
GND
CANH
CANL
CEM-2020 (3)
GND
CANH
CANL
VRM-2020
GND
CANH
CANL
AEM-2020 (1)
GND
CANH
CANL
AEM-2020 (3)
GND
CANH
CANL
AEM-2020 (4)
GND
CANL
CANH
1
The J1939 drain (shield)
should be grounded at one
point only. If grounded
elsewhere, do not connect the
drain to the DGC-2020HD.
1
Note:
CEM-2020 (4)
GND
CANH
CANL