7 wiring of the standard device, Wiring of the standard device – Lenze E94APNE User Manual
Page 44
Wiring of the standard device
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EDK94PNE36 DE/EN/FR/ES/IT 3.1
7
Wiring of the standard device
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Danger!
Dangerous electrical voltage
All power terminals remain live for up to three minutes after mains
disconnection.
Possible consequences:
ƒ
Death or severe injuries when touching the power terminals.
Protective measures:
ƒ
Switch off the power supply and wait for at least three minutes before
working on the power terminals.
ƒ
Make sure that all power terminals are deenergised.
(
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.
The following connections need not be shielded:
ƒ
24 V supply
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Digital signals (inputs and outputs)