Operating Instructions – MOVIAXIS® MX Multi-Axis Servo Inverter
97
4
Notes on electromagnetic compatibility
Installation
4.13 Notes on electromagnetic compatibility
Separate cable
ducts
• Route
power cables
and
electronics leads
in
separate cable ducts
.
Shielding and
grounding
• Only use
shielded control cables
.
• Apply the
shield by the shortest possible route and make sure it is grounded
over a wide area at both ends
. To avoid ground loops, you can ground one end of
the shield via a suppression capacitor (220 nF / 50 V). If using double-shielded ca-
bles (in the case of multi-core cables in some cases with several shielded bunched
cables), ground the outer shield on the servo inverter end and the inner shield on the
other end.
•
Shielding
can also be achieved by laying the cables in
grounded sheet metal
ducts or metal pipes
.
Always install the power and signal lines separately.
• Ground the
multi-axis servo drive
and
all additional devices to meet the high-
frequency guidelines
. You achieve this, e. g. through a wide area metal-on-metal
contact between the unit housing and ground, for example by means of unpainted
control cabinet mounting panels.
Line filter
• Install the
line filter close to the servo drive
but outside the minimum clearance for
cooling.
• Do not switch between the line filter and the MOVIAXIS
®
multi-axis servo inverter.
• Keep the
length of the cable between the line filter and servo drive to an abso-
lute minimum
, and never more than 600 mm. Unshielded, twisted cables are suffi-
cient. Use also unshielded lines for the supply system lead. Shielded cables must be
used for cables longer than 600 mm.
•
No EMC limits are specified for interference emission
in
voltage supply sys-
tems without grounded star point
(IT systems). The
effectiveness of line filters
in IT systems is
severely limited.
00755BXX
Figure 57: Examples of correct shield connection using metal clamp (shield clamp) or metal cable
gland
Summary of Contents for MOVIAXIS MX
Page 2: ...SEW EURODRIVE Driving the world...
Page 210: ......
Page 211: ...SEW EURODRIVE Driving the world...