Installation In Conformance With Emc Regulations - Siemens simovert masterdrives Betriebsanleitung

10.98
6 Installation in Conformance with EMC
Regulations
Siemens AG 6SE7087-6NP85-0AA0
SIMOVERT MASTERDRIVES
The following contains a summary of general information and
guidelines which will make it easier for you to comply with EMC and CE
regulations.
♦ Ensure that there is a good conductive connection between the
housing of the rectifier unit and the mounting surface. The use of
mounting surfaces with good conducting properties (e.g. galvanized
steel plate) is recommended. If the mounting surface is insulated
(e.g. by paint), use contact washers or serrated washers.
♦ All of the metal cabinet parts must be connected through the largest
possible surface area and must provide good conductivity.
If necessary, use contact washers or serrated washers.
♦ Connect the cabinet doors to the cabinet frame using grounding
strips which must be kept as short as possible.
♦ Power cables must be routed separately away from signal cables (at
least 20 cm apart). Provide partitions between signal cables and
power cables. The partitions must be grounded.
♦ Eliminate any unnecessary cable lengths because these will
produce additional coupling capacitances and inductances.
♦ Use cables with braided shields. Cables with foil shields have a
shielding effect which is worse by a factor of five.
♦ Use a radio interference suppression filter in the incoming
powerline.
Connect the interference suppression filter to ground through a large
surface area.
It is best to directly mount the interference suppression filter on the
same good conductive mounting surface as the rectifier unit and the
inverters.
You must insert a line reactor between the radio interference
suppression filter and the unit.
♦ Contactor operating coils that are connected to the same supply
network as the rectifier unit or that are located in the close proximity
of the rectifier unit must be connected to overvoltage limiters (e.g.
RC circuits, varistors).
You will find further information in the brochure "Installation Instructions
for EMC-correct Installation of Drives"
(Order No.: 6SE7087-6CX87-8CE0).
Operating Instructions

Installation in Conformance with EMC Regulations

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