Basler Electric DGC-2020 - Manual (Page 286)

Connections with AEM-2020, CEM-2020, and LSM-2020
The AEM-2020 (Analog Expansion Module), CEM-2020 (Contact Expansion Module), and LSM-2020
(Load Share Module) are optional modules that may be installed with the DGC-2020. These modules
interface to the DGC-2020 via CAN bus, thus the CAN bus terminals are the only common connections
(Figure 6-17) between the DGC-2020, AEM-2020, CEM-2020, and LSM-2020. Refer to Section 9, LSM-
2020 (Load Share Module), for independent LSM-2020 connections. Refer to Section 10, CEM-2020
(Contact Expansion Module), for independent CEM-2020 connections. Refer to Section 11, AEM-2020
(Analog Expansion Module), for independent AEM-2020 connections. Refer to Connections, CAN Bus
Interface, in this section for details on DGC-2020 CAN bus connections.
Figure 6-17. DGC-2020, AEM-2020, CEM-2020, LSM-2020 CAN Bus 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 a Salt Fog Environment
If the DGC-2020 will be installed in a salt-fog environment, it is recommended that the backup battery for
the real-time clock be removed. Salt fog is known to be conductive and may short-circuit the battery.
Information on removing the backup battery for the real-time clock can be found in Section 8,
Maintenance and Troubleshooting.
GND
CANH
CANL
LSM-2020
P0053-57
AEM-2020
DGC-2020
CANH
CANL
GND/SHIELD
CEM-2020
GND
CANH
CANL
GND
CANH
CANL
GND
CANH
CANL
6-20 DGC-2020 Installation 9400200990 Rev X