VLT
®
5000 INTERBUS
MG.10.O1.02 VLT is a registered Danfoss trademark
7
Cable
routing
and
connectors
recommended to keep the greatest possible
distance between the cables,or use fiber optic
Cables, especially where cables are running in
parallel over long distances.
If the INTERBUS cable has to cross a motor or
brake resistor cable they must cross each other
at an angle of 90° to ensure the minimum of
interfrence.
- Connection of the cable screen
The screen of the INTERBUS cable must
always be connected to ground at both ends,
that means the screen must be connected to
ground in all stations connected to the
INTERBUS network. It is of high importance
to have a low impedance ground connection
of the screen, also at high frequencies.This
can be obtained by connecting the surface of
the screen to ground, for example by means
of a cable clamp or a conductive cable gland.
The INTERBUS Option Card is connected to the
remote bus line via MK 100A or MK 101A for the
incomming INTERBUS cable. terminals 62, 63, 64,
65, and 66. to the bus line via MK 100B or MK 101B
for the outcomming INTERBUS, terminals 62, 63, 64,
65, 66 and RB.
EMC precautions
The following EMC precautions are recommended to
obtain interference free operation of the INTERBUS
network. Additional information on EMC can be found
in the VLT 5000 Series design guide (MG.50.CX.YY).
Please also consult the manual of the INTERBUS
master for further installation guidelines.
Relevant national and local regulations, for
example regarding protective earth connection,
must be observed.
- Cable routing
The INTERBUS communication cable must be
kept away from motor and brake resistor
cables to avoid coupling of high frequency
noise from one cable to the other. Normally a
distance of 200 mm is sufficient, but it is generally
