Emc-Compliant Installation - Lenze i550-C0.25/120-1 Project Planning Manual

Information on project planning
Control cabinet structure

EMC-compliant installation

EMC-compliant installation
The drive system (inverter and drive) meet the EMC Directive 2014/30/EU if it is installed
according to the guidelines of CE-typical drive systems.
The structure in the control cabinet must support the EMC-compliant installation with
shielded motor cables.
Please use sufficiently conductive shield connections.
•
Connect the housing with shielding effect to the grounded mounting plate with a surface
•
as large as possible, e. g. of inverters and RFI filters.
Use central earthing points.
•
Matching accessories makes effective shielding easier.
Shield plates
•
Shield clips/shield clamps
•
Metallic cable ties
•
(Example graphics i550)
A Shielding of control connections
B Control cable
C Electrically conductive mounting
plate
D Shield clamps
Alternatively, the motor cable can be shielded on an optional motor shield plate.
Mains connection, DC supply
Inverters, mains chokes, or mains filters may only be connected to the mains via
•
unshielded single cores or unshielded cables.
When a line filter is used, shield the cable between mains filter or RFI filter and inverter if
•
its length exceeds 300 mm. Unshielded cores must be twisted.
In DC-bus operation or DC supply, use shielded cables.
•
Only certain inverters are provided with this connection facility.
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42
E Low-capacitance motor cable (C-
core/core/C-core/shield ≤ 75/150
pF/m ≤ 2.5 mm"/AWG 14); (C-core/
core/C-core/shield ≤ 150/300 pF/m
≥ 4 mm"/AWG 12)