Electrical installaon
Important notes
DANGER!
Risk of injury and risk of burns from dangerous voltage
Power terminals may also carry voltage in the switched-o state or when the motor is stopped
and may cause life-threatening cardiac arrhythmia and serious burns.
▶
Disconnect the product from the mains.
▶
Check that the power terminals are deenergized before starng work.
•
When working on energized products, comply with the applicable naonal accident
prevenon regulaons.
•
The electrical installaon must be carried out according to the appropriate regulaons
(e.g. cable cross-secons, fuses, PE connecon).
•
The manufacturer of the system or machine is responsible for adherence to the limits
required in connecon with EMC legislaon.
Connecon for high leakage current
If the leakage current is greater than 3.5 mA for alternang current or greater than 10 mA for
direct current, the standard EN 61800‑5‑1 requires that at least one or more of the following
measures be met:
•
The minimum PE conductor cross-secon is 10 mm
2
with Cu or 16 mm
2
with Al.
•
Aachment of an addional protecve grounding conductor with the same cross-secon
as the original protecve grounding conductor.
-
Do not place the addional terminal on the same terminal.
•
Provide automac disconnecon of the mains in case of interrupon of the protecve
conductor.
4Connecon opons ^ 121
Operaon on an external inverter
A max. pulse voltage amplitude of U
pk
= 1560 V at the motor terminals must not be exceeded.
Here, the minimum pulse rise me must be t
R
= 0.1 µs.
If it cannot be ruled out that the permissible voltage peaks will be exceeded or that the
minimum pulse rise me will not be reached, the following measures must be iniated:
•
Reducon of the DC-bus voltage (threshold for brake chopper voltage)
•
Use of lters, chokes
•
Use of special motor cables
Preparaon
EMC-compliant wiring
The EMC-compliant wiring is described in detail in the documentaon of the
Lenze inverters.
Electrical installaon
Important notes
36
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