Lenze E94P PositionServo with MVOB - Manual (Page 20)

18 L S94H201E_13426446_EN
Installation
EMC
Compliance with EN 61800-3:2004
In a domestic environment this product may cause radio interference. The user may be required to
take adequate measures
Noise emission
Drive Models ending in the suffix “2F” are in compliance
with class A limits according to EN 55011 if installed
in a control cabinet and the motor cable length does
not exceed 10m. Models ending in “N” will require an
appropriate line filter.
Installation according to EMC
Requirements
E
D
B C
A
F
S930
A Screen clamps
B Control cable
C Low-capacitance motor cable
(core/core < 75 pF/m, core/screen < 150 pF/m)
D Earth grounded conductive mounting plate
E Encoder/Resolver Feedback Cable
F Footprint or Sidemount Filter (optional)
3.2.2 EMI Protection
Electromagnetic interference (EMI) is an important concern for users of digital servo control systems. EMI
will cause control systems to behave in unexpected and sometimes dangerous ways. Therefore, reducing
EMI is of primary concern not only for servo control manufacturers such as Lenze, but the user as well.
Proper shielding, grounding and installation practices are critical to EMI reduction.
3.2.3 Enclosure
The panel in which the PositionServo is mounted must be made of metal, and must be grounded using the
SPG method outlined in section 3.2.1.
Proper wire routing inside the panel is critical; power and logic leads must be routed in different avenues
inside the panel.
You must ensure that the panel contains sufficient clearance around the drive. Refer to section 2.9
suggested cooling air clearance.
3.3 Line Filtering
In addition to EMI/RFI safeguards inherent in the PositionServo design, external filtering may be required. High
frequency energy can be coupled between the circuits via radiation or conduction. The AC power wiring is
one of the most important paths for both types of coupling mechanisms. In order to comply with IEC 61800-
3:2004, an appropriate filter must be installed within 20cm of the drive power inputs.
Line filters should be placed inside the shielded panel. Connect the filter to the incoming power lines
immediately after the safety mains and before any critical control components. Wire the AC line filter as
close as possible to the PositionServo drive.