Electrical Installation; Important Notes; Preparation - Lenze M55BH063S04 Mounting And Switch-On Instructions

Electrical installation

Important notes

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.
Connection for high leakage current
If the leakage current is greater than 3.5 mA for alternating 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-section is 10 mm
Attachment of an additional protective grounding conductor with the same cross-section
•
as the original protective grounding conductor.
Do not place the additional terminal on the same terminal.
-
Provide automatic disconnection of the mains in case of interruption of the protective
•
conductor.
Operation on an external inverter
A max. pulse voltage amplitude of U
Here, the minimum pulse rise time must be t
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

EMC-compliant wiring
The EMC-compliant wiring is described in detail in the documentation of the
Lenze inverters.
36
2
with Cu or 16 mm
= 1560 V at the motor terminals must not be exceeded.
pk
= 0.1 µs.
R
2
with Al.