Protouch-wide: user documentation
DOC/PROTOUCH-WIDE; V1.5
DOC_PROTOUCH_WIDE_V1.5.docx
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3.2.4
Grounding
The system can be grounded using the designated grounding fastener or screw thread with appropriate cable end sleeve.
In some cases, it is recommended to connect the shields of the cables to chassis potential at the entry point into the housing cabinet as shown
in Fig. 10. If the cables enter a hermetically closed cabinet, use special 360-degree metal clamps (EMI/RFI protected types which contact to the
cable shield).
Important
Note
Grounding of the cable’s shields using
pig-tail wires
is not recommended because of their high
impedance at high frequencies. It is better to clamp the shields onto a grounded copper rail.
F
ig. 10
Additional grounding of the cable shields at the entry point of a cabinet
Chassis
Cables
nonisolated
shield
IIndustrial PC System
Clamping
screw
Cabinet
