Fig.14-12:
Insufficient contacting of a cable shield
1
... No pig tails
14.3.3.2
Shielding inside the control cabinet
In many cases a range of interference sources, such as servo drive modules,
transformers, contactors and relays, is present in the control cabinet. It is
therefore necessary to run the cable shield from the connector housing (control
cabinet) to the control (continuous connection from the handheld terminal to
the control).
When using the appropriate connection box and a shielded cable for the data
line from the connection box to the control, the continuous, high frequency
compatible connection of the shield from the KeTop to the control is guaran-
teed.
Fig.14-13:
Example of a correct shield connection in a KEBA connection box
If for some reason a connection box cannot be used, the continuous connection
of the shielding on less critical interface types such as RS-232-C takes place
by contacting the connector housing with the control cabinet and inside the
control cabinet by contacting the shielding with the control cabinet (using
CE Conformity, Directives and Standards
© KEBA 2009
User's Manual V1.50
151
Summary of Contents for KeTop T100
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