ABB OmniCore V250XT Type B Product Manual page 77

Examples
The following figure shows 2 examples on how protective earth and the signal
cable screens can be connected:
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Example 1:
Example 2:
Product manual - OmniCore V250XT Type B
3HAC087112-001 Revision: A
Control cabinet
• Where a good earth connection is available on all units, the best shielding
is obtained by grounding all screens at both ends on all units.
• If the cable is terminated where a good earth connection is not available a
noise suppression capacitor can be used. The screens of the 2 cables must
be connected as shown in the figure, but not connected to the chassis of the
unit.
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3 Installation and commissioning
3.5.2 Connecting cables to the controller
External unit
Example 1
Example 2
Continues on next page
Continued
77