Installing
3.2 Overview of the interfaces
CU240B-2 and CU240E-2 Control Units
Compact Operating Instructions, 04/2015, A5E35792002B AA
9
Table 3- 2 Permissible cable and wiring options
Solid or flexible conduc-
tors
Finely stranded con-
ductor with non-
insulated end sleeve
Finely stranded con-
ductor with partially
insulated end sleeve
Two finely stranded
conductors with the
same cross-section
with partially insulated
Wiring the terminal strip in compliance with EMC
● If you use shielded cables, then you must connect the shield to the mounting plate of the
control cabinet or with the shield support of the inverter through a good electrical
connection and a large surface area.
● Use the shield connection plate of the Control Unit as shield support and strain relief.
Table 3- 3 Article numbers
Shield connection kit 2 for the CU240B-2 and CU240E-2 Control Units with
all fieldbus interfaces except for PROFINET.
6SL3264-1EA00-0HA0
Shield connection kit 3 for the CU230P-2 and CU240E-2 Control Units with
6SL3264-1EA00-0HB0
Further information about EMC-compliant wiring is available on the Internet: EMC installation
guideline (http://support.automation.siemens.com/WW/view/en/60612658)
Interfaces at the lower side of the CU240B-2 and CU240E-2 Control Units
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