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CONTROL PANEL
ETV 1991
21.06.2018
Page 15
Wiring Guidelines
Earth Connection
The terminal must be connected to earth through the mounting on control cabinet or over
the terminal provided. It is important to create a low-ohm earth connection, only then can
error-free operation be guaranteed. The earth connection should have the maximum cross
section and the largest electrical surface possible.
Any noise signals that reach the terminal over external cables must be filtered over the
earth connection. With a large electrical surface, high frequency noise can also be dissi-
pated (skin effect).
CMB