Basler Electric DGC-2020 - Manual (Page 391)

Figure 10-2. CEM-2020H Overall Dimensions
Connections
Contact Expansion Module connections are dependent on the application. Incorrect wiring may result in
damage to the module.
NOTES
Operating power from the battery must be of the correct polarity. Although
reverse polarity will not cause damage, the CEM-2020 will not operate.
Be sure that the CEM-2020 is hard-wired to earth ground with no smaller than
12 AWG copper wire attached to the chassis ground terminal on the module.
Terminations
The terminal interface consists of plug-in connectors with screw-down compression terminals.
CEM-2020 connections are made with one 5-position connector, two 18-position connectors, and two 24-
position connectors with screw-down compression terminals. These connectors plug into headers on the
CEM-2020. The connectors and headers have dovetailed edges that ensure proper connector orientation.
Also, the connectors and headers are uniquely keyed to ensure that the connectors mate only with the
correct headers.
Caution
By mating conductors of dissimilar metals, galvanic corrosion could
occur which may lead to signal loss.
5.50 [139.7]
6.38 [162.1]
7.50 [190.5]
8.38 [212.9]
2.23 [56.6]
9400200990 Rev X DGC-2020 CEM-2020 (Contact Expansion Module) 10-5