4
Installation
EMC-compliant installation
Operating Instructions – MOVIDRIVE
®
modular
119
The information in this chapter will help you to optimize the system in regard of elec-
tromagnetic compatibility, or to eliminate already existing EMC interferences.
The notes in this chapter are not legal regulations; they are merely recommendations
for improving the electromagnetic compatibility of your plant.
For further notes on EMC-compliant installation, refer to the publication Drive Engin-
eering - Practical Implementation, edition "EMC in Drive Engineering – Basic Theoret-
ical Principles – EMC-Compliant Installation in Practice".
4.11.1 Control cabinet
Use a control cabinet with conducting (galvanized) mounting plate. In cased more than
one mounting plate is used, connect the plate over a large area.
Mount line filter and inverter on a shared mounting plate. Make sure they are connec-
ted over a large area and with good conductivity.
4.11.2 HF equipotential bonding in the system
In general, a suitable equipotential bonding between system, control cabinet, machine
structure, cable ducts, and drives must be ensured.
Connect the individual sections in a HF-compatible manner.
From an electrical safety perspective, the PE busbar is the star point. The PE con-
ductor replaces neither HF grounding nor shielding.
In terms of EMC, it is advantageous if the mounting plate is used as a star point with
respect to HF equipotential bonding.
Perform the following measures for a suitable HF equipotential bonding:
• Connect the PE busbar to the mounting plate in a HF-compatible manner.
• Connect the shield metal cable ducts to the control cabinet in a HF-compatible
manner.
• Connect the cable ducts with the mounting plate in the control cabinet using an HF
litz wire.
• Connect the parts of the shield metal cable ducts in a HF-compatible manner.
• Connect the shield metal cable ducts to the gearmotor in a HF-compatible manner.
4.11.3 Cable installation
Route the power cables, such as motor cable and brake cable separated from the
supply system cable and control cable.
Route all cables as close to the reference potential as possible, e.g. the mounting
plate.
All cables must be as short as possible. Avoid spare loops.
4.11.4 Supply system cable connection
The supply system cable can be connected to the line choke and/or line filter using
twisted unshielded single conductors, or using unshielded cables.
If necessary, shielded cables can increase the EMC.
24748536/EN – 11/2017
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