Electrical installation
Control terminals
Important notes
6
72
EDS84ABD302 EN 4.0
6.5
Control terminals
6.5.1
Important notes
Stop!
The device contains components that can be destroyed by electrostatic
discharge!
Before working on the device, the personnel must ensure that they are free of
electrostatic charge by using appropriate measures.
Design of the cables
ƒ
The cables used must comply with the approvals required for the location (e.g. UL).
ƒ
The effectiveness of a shielded cable is reached by:
– Providing a good shield connection through large-surface shield contact.
– Using only braided shields with low shield resistance made of tin-plated or
nickel-plated copper braid.
– Using braided shields with an overlap rate > 70 % and an overlap angle of 90 °.
– Keeping unshielded cable ends as short as possible.
These terminals must be shielded:
ƒ
Analog signals (single-sided shield connection to the controller)
The following connections need not be shielded:
ƒ
Digital signals up to a cable length of 3 m
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