
Electrical installation
Important notes
DANGER!
Risk of injury and risk of burns from dangerous voltage
Power terminals may also carry voltage in the switched-off 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 starting work.
•
When working on energized products, comply with the applicable national accident
prevention regulations.
•
The electrical installation must be carried out according to the appropriate regulations
(e.g. cable cross-sections, fuses, PE connection).
•
The manufacturer of the system or machine is responsible for adherence to the limits
required in connection with EMC legislation.
Operation 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 time 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 time will not be reached, the following measures must be initiated:
•
Reduction of the DC-bus voltage (threshold for brake chopper voltage)
•
Use of filters, chokes
•
Use of special motor cables
Preparation
The notes for the electrical connection can be found in the enclosed mounting
instructions.
EMC-compliant wiring
The EMC-compliant wiring is described in detail in the documentation of the
Lenze inverters.
Electrical installation
Important notes
30
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