Installation In Conformance With Emc Regulations - Siemens 6SE7011-5EP60 Operating Instructions Manual

05.2003
6 Installation in Conformance with EMC
Regulations
Siemens AG 6SE7087-6JP60
SIMOVERT MASTERDRIVES
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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 conductive connection between the housing of
the converters or inverters 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.
♦ For the connection between converter/inverter and motor, use
shielded cables which have to be grounded on both sides over a
large surface area.
If the motor terminal box is of plastic, additional grounding strands
have to be inserted.
♦ The shield of the motor supply cable must be connected to the
shield connection of the converter and to the motor mounting panel
through the largest possible surface area.
♦ The motor cable shield must not be interrupted by output reactors,
fuses or contactors.
♦ All signal cables must be shielded. Separate the signal cables
according to signal groups.
Do not route cables with digital signals unshielded next to cables
with analog signals. If you use a common signal cable for both, the
individual signals must be shielded from each other.
♦ 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.
♦ Connect the reserve cables/conductors to ground at both ends to
achieve an additional shielding effect.
♦ Lay the cables close to grounded plates as this will reduce the
injection of undesired signals.
♦ 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.
Operating Instructions
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Installation in Conformance with EMC Regulations

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